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Double Dissociation of Auditory Attention Span and Visual Attention in Long-Term Survivors of Childhood Cerebellar Tumor: A Deterministic Tractography Study of the Cerebellar-Frontal and the Superior Longitudinal Fasciculus Pathways. J Int Neuropsychol Soc 2020; 26:939-953. [PMID: 32342828 DOI: 10.1017/s1355617720000417] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Right cerebellar-left frontal (RC-LF) white matter integrity (WMI) has been associated with working memory. However, prior studies have employed measures of working memory that include processing speed and attention. We examined the relationships between the RC-LF WMI and processing speed, attention, and working memory to clarify the relationship of RC-LF WMI with a specific cognitive function. Right superior longitudinal fasciculus II (SLF II) WMI and visual attention were included as a negative control tract and task to demonstrate a double dissociation. METHODS Adult survivors of childhood brain tumors [n = 29, age: M = 22 years (SD = 5), 45% female] and demographically matched controls were recruited (n = 29). Tests of auditory attention span, working memory, and visual attention served as cognitive measures. Participants completed a 3-T MRI diffusion-weighted imaging scan. Fractional anisotropy (FA) and radial diffusivity (RD) served as WMI measures. Partial correlations between WMI and cognitive scores included controlling for type of treatment. RESULTS A correlational double dissociation was found. RC-LF WMI was associated with auditory attention (FA: r = .42, p = .03; RD: r = -.50, p = .01) and was not associated with visual attention (FA: r = -.11, p = .59; RD: r = -.11, p = .57). SLF II FA WMI was associated with visual attention (FA: r = .44, p = .02; RD: r = -.17, p = .40) and was not associated with auditory attention (FA: r = .24, p = .22; RD: r = -.10, p = .62). CONCLUSIONS The results show that RC-LF WMI is associated with auditory attention span rather than working memory per se and provides evidence for a specificity based on the correlational double dissociation.
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Komaitis S, Kalyvas AV, Skandalakis GP, Drosos E, Lani E, Liouta E, Liakos F, Kalamatianos T, Piagkou M, Emelifeonwu JA, Stranjalis G, Koutsarnakis C. The frontal longitudinal system as revealed through the fiber microdissection technique: structural evidence underpinning the direct connectivity of the prefrontal-premotor circuitry. J Neurosurg 2020; 133:1503-1515. [PMID: 31585424 DOI: 10.3171/2019.6.jns191224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 06/13/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the morphology, connectivity, and correlative anatomy of the longitudinal group of fibers residing in the frontal area, which resemble the anterior extension of the superior longitudinal fasciculus (SLF) and were previously described as the frontal longitudinal system (FLS). METHODS Fifteen normal adult formalin-fixed cerebral hemispheres collected from cadavers were studied using the Klingler microdissection technique. Lateral to medial dissections were performed in a stepwise fashion starting from the frontal area and extending to the temporoparietal regions. RESULTS The FLS was consistently identified as a fiber pathway residing just under the superficial U-fibers of the middle frontal gyrus or middle frontal sulcus (when present) and extending as far as the frontal pole. The authors were able to record two different configurations: one consisting of two distinct, parallel, longitudinal fiber chains (13% of cases), and the other consisting of a single stem of fibers (87% of cases). The fiber chains' cortical terminations in the frontal and prefrontal area were also traced. More specifically, the FLS was always recorded to terminate in Brodmann areas 6, 46, 45, and 10 (premotor cortex, dorsolateral prefrontal cortex, pars triangularis, and frontal pole, respectively), whereas terminations in Brodmann areas 4 (primary motor cortex), 47 (pars orbitalis), and 9 were also encountered in some specimens. In relation to the SLF system, the FLS represented its anterior continuation in the majority of the hemispheres, whereas in a few cases it was recorded as a completely distinct tract. Interestingly, the FLS comprised shorter fibers that were recorded to interconnect exclusively frontal areas, thus exhibiting different fiber architecture when compared to the long fibers forming the SLF. CONCLUSIONS The current study provides consistent, focused, and robust evidence on the morphology, architecture, and correlative anatomy of the FLS. This fiber system participates in the axonal connectivity of the prefrontal-premotor cortices and allegedly subserves cognitive-motor functions. Based in the SLF hypersegmentation concept that has been advocated by previous authors, the FLS should be approached as a distinct frontal segment within the superior longitudinal system.
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Affiliation(s)
- Spyridon Komaitis
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 2Department of Neurosurgery, National and Kapodistrian University of Athens
- 3Department of Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - Aristotelis V Kalyvas
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 2Department of Neurosurgery, National and Kapodistrian University of Athens
- 3Department of Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - Georgios P Skandalakis
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 3Department of Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - Evangelos Drosos
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 2Department of Neurosurgery, National and Kapodistrian University of Athens
| | - Evgenia Lani
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 3Department of Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - Evangelia Liouta
- 6Hellenic Center for Neurosurgical Research, "Petros Kokkalis," Athens, Greece
| | - Faidon Liakos
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
| | | | - Maria Piagkou
- 3Department of Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - John A Emelifeonwu
- 4Department of Clinical Neurosciences, Western General Hospital, Edinburgh
- 5Department of Clinical Neurosciences, Edinburgh Microneurosurgery Education Laboratory, Edinburgh, UK; and
| | - George Stranjalis
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 2Department of Neurosurgery, National and Kapodistrian University of Athens
- 6Hellenic Center for Neurosurgical Research, "Petros Kokkalis," Athens, Greece
| | - Christos Koutsarnakis
- 1Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens School of Medicine, Athens
- 2Department of Neurosurgery, National and Kapodistrian University of Athens
- 3Department of Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
- 5Department of Clinical Neurosciences, Edinburgh Microneurosurgery Education Laboratory, Edinburgh, UK; and
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Li X, Tan X, Wang P, Hu X, Dong Y, Zhang X, Luo B. Chronic disorders of consciousness: a case report with longitudinal evaluation of disease progression using 7 T magnetic resonance imaging. BMC Neurol 2020; 20:396. [PMID: 33121453 PMCID: PMC7594973 DOI: 10.1186/s12883-020-01973-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 10/21/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Outcome prediction for patients with disorders of consciousness (DOC) is essential yet challenging. Evidence showed that patients with DOC lasting 1 year or longer after a brain injury were less likely to recover. However, the reasons why outcomes of DOC patients differ greatly remain unclear. With a variety of analytical methods and through quantitative behavioral assessments, we aimed to track the progression of a patient with severe brain injury, in order to advance our understanding of the underlying mechanisms of DOC. CASE PRESENTATION We performed a longitudinal study for a 52-year-old male DOC patient who has remained in the state for 1.5 years with comprehensive rehabilitative therapies. The patient underwent 3 times of assessments of Coma Recovery Scale-Revised (CRS-R) and ultra-high-field 7 T magnetic resonance imaging (MRI). Both topologic properties and brain microstructure were analyzed to track disease progression. We observed dynamic increases of fiber densities with measurements at three time points (t1:1.5 M, t2:7.5 M t3:17.5 M). Specifically, fiber densities of the superior longitudinal fasciculus and arcuate fasciculus nerve fiber bundles improved mostly in the visual, verbal, and auditory subscales, which was consistent with the CRS-R scores. Moreover, the graph-theory analyses demonstrated that network topologic properties showed an improvement although the disease duration exceeded 1 year. CONCLUSIONS DOC patients with a course longer than 1 year remain possible to improve, and including evaluation methods such as WM connectome analysis and graph theory could be potentially valuable for a more precise assessment of patients with a longer course of DOC.
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Affiliation(s)
- Xiaoxia Li
- Department of Neurology and Brain Medical Centre, The First Affiliated Hospital, School of Medicine, Zhejiang University, Qingchun Road, Hangzhou, 310003, China
| | - Xufei Tan
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, China
| | - Pinyi Wang
- Interdisciplinary Institute of Neuroscience and Technology, Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China
| | - Xiaohua Hu
- Department of Rehabilitation, Hangzhou Hospital of Zhejiang CAPR, Hangzhou, China
| | - Yan Dong
- Department of Rehabilitation, Hangzhou Hospital of Zhejiang CAPR, Hangzhou, China
| | - Xiaotong Zhang
- Interdisciplinary Institute of Neuroscience and Technology, Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China. .,School of Medicine, Zhejiang University, Hangzhou, China.
| | - Benyan Luo
- Department of Neurology and Brain Medical Centre, The First Affiliated Hospital, School of Medicine, Zhejiang University, Qingchun Road, Hangzhou, 310003, China.
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104
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Tariq S, Tsang A, Wang M, Reaume N, Carlson H, Sajobi TT, Longman RS, Smith EE, Frayne R, d’Esterre CD, Coutts SB, Barber PA. White matter tract microstructure and cognitive performance after transient ischemic attack. PLoS One 2020; 15:e0239116. [PMID: 33095770 PMCID: PMC7584182 DOI: 10.1371/journal.pone.0239116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/31/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Patients with transient ischemic attack (TIA) show evidence of cognitive impairment but the reason is not clear. Measurement of microstructural changes in white matter (WM) using diffusion tensor imaging (DTI) may be a useful outcome measure. We report WM changes using DTI and the relationship with neuropsychological performance in a cohort of transient ischemic attack (TIA) and non-TIA subjects. METHODS Ninety-five TIA subjects and 51 non-TIA subjects were assessed using DTI and neuropsychological batteries. Fractional anisotropy (FA) and mean diffusivity (MD) maps were generated and measurements were collected from WM tracts. Adjusted mixed effects regression modelled the relationship between groups and DTI metrics. RESULTS Transient ischemic attack subjects had a mean age of 67.9 ± 9.4 years, and non-TIA subjects had a mean age 64.9 ± 9.9 years. The TIA group exhibited higher MD values in the fornix (0.36 units, P < 0.001) and lower FA in the superior longitudinal fasciculus (SLF) (-0.29 units, P = 0.001), genu (-0.22 units, P = 0.016), and uncinate fasciculus (UF) (-0.26 units, P = 0.004). Compared to non-TIA subjects, subjects with TIA scored lower on the Addenbrooke's Cognitive Assessment-Revised (median score 95 vs 91, P = 0.01) but showed no differences in scores on the Montreal Cognitive Assessment (median 27 vs 26) or the Mini-Mental State Examination (median 30). TIA subjects had lower scores in memory (median 44 vs 52, P < 0.01) and processing speed (median 45 vs 62, P < 0.01) but not executive function, when compared to non-TIA subjects. Lower FA and higher MD in the fornix, SLF, and UF were associated with poorer performance on tests of visual memory and executive function but not verbal memory. Lower FA in the UF and fornix were related to higher timed scores on the TMT-B (P < 0.01), and higher SLF MD was related to higher scores on TMT-B (P < 0.01), confirming worse executive performance in the TIA group. CONCLUSIONS DTI scans may be useful for detecting microstructural disease in TIA subjects before cognitive symptoms develop. DTI parameters, white matter hyperintensities, and vascular risk factors underly some of the altered neuropsychological measures in TIA subjects.
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Affiliation(s)
- Sana Tariq
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
| | - Adrian Tsang
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
| | - Meng Wang
- Department of Community Health Sciences & O’Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
| | - Noaah Reaume
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
| | - Helen Carlson
- Calgary Pediatric Stroke Program, Alberta Children’s Hospital Research Institute, Calgary, AB, Canada
| | - Tolulope T. Sajobi
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Department of Community Health Sciences & O’Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
| | - Richard Stewart Longman
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
- Alberta Health Services, Neuropsychology Service, Foothills Medical Centre, Calgary, AB, Canada
| | - Eric E. Smith
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
- Department of Clinical Neurosciences, Calgary Stroke Program, Foothills Medical Centre, Calgary, AB, Canada
| | - Richard Frayne
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
- Department of Clinical Neurosciences, Calgary Stroke Program, Foothills Medical Centre, Calgary, AB, Canada
- Department of Radiology, Foothills Medical Centre, Calgary, AB, Canada
| | - Christopher D. d’Esterre
- Department of Clinical Neurosciences, Calgary Stroke Program, Foothills Medical Centre, Calgary, AB, Canada
| | - Shelagh B. Coutts
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
- Department of Community Health Sciences & O’Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Department of Clinical Neurosciences, Calgary Stroke Program, Foothills Medical Centre, Calgary, AB, Canada
- Department of Radiology, Foothills Medical Centre, Calgary, AB, Canada
| | - Philip A. Barber
- Seaman Family MR Center, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Room 1A10 Health Research Innovation Center, Calgary, AB, Canada
- Department of Community Health Sciences & O’Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Department of Clinical Neurosciences, Calgary Stroke Program, Foothills Medical Centre, Calgary, AB, Canada
- Department of Radiology, Foothills Medical Centre, Calgary, AB, Canada
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105
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Jung S, Kim JH, Sung G, Ko YG, Bang M, Park CI, Lee SH. Uncinate fasciculus white matter connectivity related to impaired social perception and cross-sectional and longitudinal symptoms in patients with schizophrenia spectrum psychosis. Neurosci Lett 2020; 737:135144. [PMID: 32534095 DOI: 10.1016/j.neulet.2020.135144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/03/2020] [Accepted: 06/08/2020] [Indexed: 11/16/2022]
Abstract
Dysfunctional social-emotional perception in patients with schizophrenia can result in adverse clinical symptoms and poorer long-term outcomes. The white matter tracts that interact among a number of brain regions have an important role to play. However, few neuroimaging studies focus on the effects of white matter connectivity on social-emotional perception in schizophrenia and its impact on patients' clinical symptoms and long-term outcomes. Forty-one patients with schizophrenia spectrum psychosis and 42 healthy controls underwent structural magnetic resonance imaging. The white matter fractional anisotropy values of the emotion recognition areas, the bilateral anterior thalamic radiation, inferior longitudinal fasciculus, cingulum bundle, superior longitudinal fasciculus, and uncinate fasciculus were compared between patients with schizophrenia spectrum psychosis and healthy controls. Social-emotional perception levels and symptom severity at baseline and after 1 year were examined. A group analysis showed that white matter connectivity was significantly lower in the bilateral anterior thalamic radiation, cingulum bundle, right inferior longitudinal fasciculus, and uncinate fasciculus of patients with schizophrenia spectrum psychosis compared to the healthy controls. Contrastingly, a correlation analysis revealed that larger right uncinate fasciculus fractional anisotropy values were associated with lower social-emotional perception levels in patients with schizophrenia spectrum psychosis. Additionally, the white matter fractional anisotropy values of the right uncinate fasciculus showed a significant positive correlation with the severity of positive symptoms at baseline and with poor outcomes after 1 year. The findings of the present study suggest that impaired social-emotional perception in patients with schizophrenia spectrum psychosis is associated with larger white matter connectivity of the uncinate fasciculus, which is also associated with more severe symptoms at baseline and after 1-year. These results suggest that the uncinate fasciculus could affect the pathophysiology of schizophrenia.
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Affiliation(s)
- Sra Jung
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Ji-Hye Kim
- CHA University School of Medicine, Seongnam, Republic of Korea
| | - Gihye Sung
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea; Department of Psychology, Korea University, Seoul, Republic of Korea
| | - Young-Gun Ko
- Department of Psychology, Korea University, Seoul, Republic of Korea
| | - Minji Bang
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Chun-Il Park
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea.
| | - Sang-Hyuk Lee
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea.
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106
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Yang FPG, Bal SS, Lee JF, Chen CC. White Matter Differences in Networks in Elders with Mild Cognitive Impairment and Alzheimer's Disease. Brain Connect 2020; 11:180-188. [PMID: 32731749 DOI: 10.1089/brain.2020.0767] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background: Alzheimer's disease (AD) is associated with impairment of large-scale brain networks, disruption in structural connections, and functional disconnection between distant brain regions. Although decreased functional connectivity has been thoroughly investigated and reported by existing functional neuroimaging literature, this study investigated network-based differences due to the structural changes in white matter pathways in AD patients. We hypothesize that diffusion metrics of disrupted tracts that go through cognitive networks related with intrinsic awareness, motor movement, and executive control can be utilized as biomarkers to distinguish prodromal stage from AD stage. Methods: Diffusion MRI data of a total 154 subjects, including patients with clinical AD (n = 47) and patients with mild cognitive impairment (MCI) (n = 107) was used. To study structural changes associated with white matter fiber pathways voxel-averaged diffusion metrics and fiber density metrics were calculated. Results: Study revealed that AD patients exhibit disruptions in intrahemispheric tracts and projection fiber tracts as suggested by diffusion indices. Our whole brain analysis revealed that network differences within default mode network (DMN), sensory motor network, and frontoparietal networks are associated with disruption in inferior fronto-occipital fasciculus (IFOF), corticospinal tract, and superior longitudinal fasciculus. Global function revealed by Mini Mental State Examination correlate with those fiber pathways that form reciprocal connections within networks associated with motor movement and executive control. Conclusion: Diffusion metrics appear to be more sensitive than fiber density metrics in differentiating the structural changes in the white matter. Decreased fractional anisotropy along with increased mean diffusivity and radial diffusivity in forceps minor, corticospinal tract, and IFOF as an imaging biomarker would be ideal to distinguish AD patients from MCI patients. Difference of DMN, sensory motor network, and frontal parietal network in our study reveals that AD patients may suffer from poor motor movement and degraded executive control.
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Affiliation(s)
- Fan Pei Gloria Yang
- Center for Cognition and Mind Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Sukhdeep Singh Bal
- Department of Mathematical Sciences Liverpool, University of Liverpool, Merseyside, United Kingdom.,International Intercollegiate PhD Programme, National Tsing Hua University, Hsinchu, Taiwan
| | - Jia-Fu Lee
- Department of Psychiatry, Taipei Tzu Chi Hospital, Taipei, Taiwan
| | - Chia-Chi Chen
- Department of Early Childhood Care and Education, Kang Ning Junior College of Nursing, Taipei, Taiwan
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Mantel T, Altenmüller E, Li Y, Lee A, Meindl T, Jochim A, Zimmer C, Haslinger B. Structure-function abnormalities in cortical sensory projections in embouchure dystonia. NEUROIMAGE-CLINICAL 2020; 28:102410. [PMID: 32932052 PMCID: PMC7495104 DOI: 10.1016/j.nicl.2020.102410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/29/2020] [Accepted: 08/30/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Embouchure dystonia (ED) is a task-specific focal dystonia in professional brass players leading to abnormal orofacial muscle posturing/spasms during performance. Previous studies have outlined abnormal cortical sensorimotor function during sensory/motor tasks and in the resting state as well as abnormal cortical sensorimotor structure. Yet, potentially underlying white-matter tract abnormalities in this network disease are unknown. OBJECTIVE To delineate structure-function abnormalities within cerebral sensorimotor trajectories in ED. METHOD Probabilistic tractography and seed-based functional connectivity analysis were performed in 16/16 ED patients/healthy brass players within a simple literature-informed network model of cortical sensorimotor processing encompassing supplementary motor, superior parietal, primary somatosensory and motor cortex as well as the putamen. Post-hoc grey matter volumetry was performed within cortices of abnormal trajectories. RESULTS ED patients showed average axial diffusivity reduction within projections between the primary somatosensory cortex and putamen, with converse increases within projections between supplementary motor and superior parietal cortex in both hemispheres. Increase in the mode of anisotropy in patients was accompanying the latter left-hemispheric projection, as well as in the supplementary motor area's projection to the left primary motor cortex. Patient's left primary somatosensory functional connectivity with the putamen was abnormally reduced and significantly associated with the axial diffusivity reduction. Left primary somatosensory grey matter volume was increased in patients. CONCLUSION Correlates of abnormal tract integrity within primary somatosensory cortico-subcortical projections and higher-order sensorimotor projections support the key role of dysfunctional sensory information propagation in ED pathophysiology. Differential directionality of cortico-cortical and cortico-subcortical abnormalities hints at non-uniform sensory system changes.
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Affiliation(s)
- Tobias Mantel
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany
| | - Eckart Altenmüller
- Hochschule für Musik, Theater und Medien Hannover, Emmichplatz 1, Hanover, Germany
| | - Yong Li
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany
| | - André Lee
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany; Hochschule für Musik, Theater und Medien Hannover, Emmichplatz 1, Hanover, Germany
| | - Tobias Meindl
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany
| | - Angela Jochim
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany
| | - Claus Zimmer
- Department of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany
| | - Bernhard Haslinger
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaningerstrasse 22, Munich, Germany.
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Vanacôr CN, Isolan GR, Yu YH, Telles JPM, Oberman DZ, Rabelo NN, Figueiredo EG. Microsurgical anatomy of language. Clin Anat 2020; 34:154-168. [PMID: 32918507 DOI: 10.1002/ca.23681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/21/2020] [Accepted: 09/05/2020] [Indexed: 11/09/2022]
Abstract
The localizationist model, which focused on classical cortical areas such as Broca's and Wernicke's, can no longer explain how language processing works. Over recent years, several studies have revealed new language-related cortical and subcortical areas, resulting in a transition from localizationist concepts to a hodotopical model. These studies have described language processing as an extensive and complex network of multiple interconnected cortical areas and subcortical pathways, differing from the classical circuit described by the localizationist perspective. The hodotopical model was made possible by a paradigm shift in the treatment of cerebral tumors, especially low-grade gliomas: total or subtotal tumor resections with cortical and subcortical mapping on awake patients have become the gold standard treatment for lesions located in the dominant hemisphere. In this article, we review current understating of the microsurgical anatomy of language.
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Affiliation(s)
- Clarissa Nunes Vanacôr
- Postgraduate Program in Medicine - Surgical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,CEANNE (Centro Avançado de Neurologia e Neurocirurgia), Porto Alegre, Brazil.,Moinhos De Vento Hospital, Porto Alegre, Brazil
| | - Gustavo Rassier Isolan
- Postgraduate Program in Medicine - Surgical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,CEANNE (Centro Avançado de Neurologia e Neurocirurgia), Porto Alegre, Brazil
| | - Yang Han Yu
- Division of Neurosurgery, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - João Paulo Mota Telles
- Division of Neurosurgery, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Nícollas Nunes Rabelo
- Division of Neurosurgery, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Eberval Gadelha Figueiredo
- Division of Neurosurgery, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Koshiyama D, Fukunaga M, Okada N, Morita K, Nemoto K, Yamashita F, Yamamori H, Yasuda Y, Matsumoto J, Fujimoto M, Kudo N, Azechi H, Watanabe Y, Kasai K, Hashimoto R. Association between the superior longitudinal fasciculus and perceptual organization and working memory: A diffusion tensor imaging study. Neurosci Lett 2020; 738:135349. [PMID: 32889005 DOI: 10.1016/j.neulet.2020.135349] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/21/2020] [Accepted: 08/31/2020] [Indexed: 12/31/2022]
Abstract
The superior longitudinal fasciculus (SLF) is a white matter structure that has long bidirectional projections among the prefrontal, temporal, occipital, and parietal cortices and extends over a wide area in a human brain. Recently, anatomical details of the SLF have been clarified using a diffusion tensor imaging (DTI) template of subjects from the Human Connectome Project. However, the neurobehavioral functions of the SLF have not been fully elucidated. It is speculated that the SLF contributes to a broad cognitive domain including visuospatial nonverbal cognitive ability and verbal memory ability because of its anatomical location; however, previous findings in imaging studies are inconsistent. Showing the contribution of the SLF to cognitive function may be important for improving our understanding of the functional role of white matter structures in the human brain. This study aimed to identify the relationship between DTI indices of the SLF and the Verbal Comprehension, Perceptual Organization, Working Memory and Processing Speed Indices of the Wechsler Adult Intelligence Scale-Third Edition using regression analysis, accounting for the effects of age, sex and scanner type in 583 healthy volunteers. We showed significant correlations between the fractional anisotropy of the left SLF and the Perceptual Organization Index (β = 0.21, p = 4.5×10-4) and Working Memory Index (β = 0.19, p = 4.0×10-4). These findings may have implications for the rehabilitation of cognitive function in patients with neurological disorders.
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Affiliation(s)
- Daisuke Koshiyama
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; Division of Cerebral Integration, National Institute for Physiological Sciences, Aichi, Japan
| | - Masaki Fukunaga
- Division of Cerebral Integration, National Institute for Physiological Sciences, Aichi, Japan
| | - Naohiro Okada
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; International Research Center for Neurointelligence (WPI-IRCN), UTIAS, The University of Tokyo, Tokyo, Japan
| | - Kentaro Morita
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kiyotaka Nemoto
- Department of Psychiatry, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Fumio Yamashita
- Division of Ultrahigh Field MRI, Institute for Biomedical Sciences, Iwate Medical University, Iwate, Japan
| | - Hidenaga Yamamori
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan; Japan Community Health Care Organization, Osaka Hospital, Osaka, Japan; Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yuka Yasuda
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan; Life Grow Brilliant Mental Clinic, Medical Corporation Foster, Osaka, Japan
| | - Junya Matsumoto
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Michiko Fujimoto
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Noriko Kudo
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hirotsugu Azechi
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yoshiyuki Watanabe
- Department of Radiology, Shiga University of Medical Science, Shiga, Japan
| | - Kiyoto Kasai
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; International Research Center for Neurointelligence (WPI-IRCN), UTIAS, The University of Tokyo, Tokyo, Japan.
| | - Ryota Hashimoto
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan; Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan; Molecular Research Center for Children's Mental Development, United Graduate School of Child Development, Osaka University, Osaka, Japan
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110
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Kim SH, Jeon HE, Park CH. Relationship between Visual Perception and Microstructural Change of the Superior Longitudinal Fasciculus in Patients with Brain Injury in the Right Hemisphere: A Preliminary Diffusion Tensor Tractography Study. Diagnostics (Basel) 2020; 10:diagnostics10090641. [PMID: 32867118 PMCID: PMC7555244 DOI: 10.3390/diagnostics10090641] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 11/20/2022] Open
Abstract
Right hemisphere brain damage often results in visual-spatial deficits. Because various microstructural changes of the superior longitudinal fasciculus (SLF) after a stroke in the right hemisphere affect visual perception, including neglect, the present study investigates the relationship between both microstructural change and lateralization of SLF and visual perception, using diffusion tensor imaging (DTI) in patients with lesions in the right hemisphere. Eight patients with strokes (five patients with intracranial hemorrhage, and three patients with infarction; mean age of 52.5 years) and 16 mean-age-matched healthy control subjects were involved in this study. The visual perception of all eight patients was assessed with the motor-free visual perception test (MVPT), and their SLFs were reconstructed using DTI. The results showed that there was a significant difference between the DTI parameters of the patients and the control subjects. Moreover, patients with microstructural damage to the right SLF showed impairment of visual perception. In patients with damage to both the dorsal and ventral pathways of the right SLF, spatial neglect was present. However, although a leftward SLF asymmetry was revealed in our patients, this lateralization did not show a relationship with visual perception. In conclusion, the microstructural changes of the right SLF play an important role in visual perception, and both pathways contribute to spatial neglect, but leftward lateralization of the right SFL activity after a stroke does not contribute to general visual perception.
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111
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Association of self-regulation with white matter correlates in boys with and without autism spectrum disorder. Sci Rep 2020; 10:13811. [PMID: 32796900 PMCID: PMC7429820 DOI: 10.1038/s41598-020-70836-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 07/24/2020] [Indexed: 12/27/2022] Open
Abstract
Previous studies demonstrated distinct neural correlates underpinning impaired self-regulation (dysregulation) between individuals with autism spectrum disorder (ASD) and typically developing controls (TDC). However, the impacts of dysregulation on white matter (WM) microstructural property in ASD and TDC remain unclear. Diffusion spectrum imaging was acquired in 59 ASD and 62 TDC boys. We investigated the relationship between participants’ dysregulation levels and microstructural property of 76 WM tracts in a multivariate analysis (canonical correlation analysis), across diagnostic groups. A single mode of brain-behavior co-variation was identified: participants were spread along a single axis linking diagnosis, dysregulation, diagnosis-by-dysregulation interaction, and intelligence to a specific WM property pattern. This mode corresponds to diagnosis-distinct correlates underpinning dysregulation, which showed higher generalized fractional anisotropy (GFA) associated with less dysregulation in ASD but greater dysregulation in TDC, in the tracts connecting limbic and emotion regulation systems. Moreover, higher GFA of the tracts implicated in memory, attention, sensorimotor processing, and perception associated with less dysregulation in TDC but worse dysregulation in ASD. No shared WM correlates of dysregulation between ASD and TDC were identified. Corresponding to previous studies, we demonstrated that ASD and TDC have broad distinct white matter microstructural property underpinning self-regulation.
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112
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Chen Y, Lv C, Li X, Zhang J, Chen K, Liu Z, Li H, Fan J, Qin T, Luo L, Zhang Z. The positive impacts of early-life education on cognition, leisure activity, and brain structure in healthy aging. Aging (Albany NY) 2020; 11:4923-4942. [PMID: 31315089 PMCID: PMC6682517 DOI: 10.18632/aging.102088] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 07/04/2019] [Indexed: 12/17/2022]
Abstract
Education in people's early lives are positively related to their cognitive function, but its modulating effects on detailed cognition domains, its interaction with leisure activities and the associated brain changes have yet to be investigated. This report used data from 659 cognitively normal community dwelling elderly who completed neuropsychological tests, leisure activities measurement, and 78 of them underwent structural and diffusion MRI scans. We found that: (i) the highly educated elderly had a better cognitive functioning in multi-domains, higher frequencies of participation in knowledge-related leisure activities, and slower age-related reductions of executive function; (ii) the intellectual and social types of leisure activities mediated the association between education and multiple cognitive domains, including memory, language, attention and executive function; (iii) there was a significant age by education interaction on the gray matter volume of the anterior brain regions and white matter integrity; and (iv) the interaction between age and education affected cognition indirectly through white matter integrity analyzed using structural equation model. Overall, our results revealed that high education in early life served as a protective factor in aging that may help to postpone cognitive and brain reserve decline in cognitively normal aging.
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Affiliation(s)
- Yaojing Chen
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, P. R. China.,BABRI Centre, Beijing Normal University, Beijing, P. R. China
| | - Chenlong Lv
- Teaching and Research Section, Graduate School, Academy of Military Sciences, Beijing, P. R. China
| | - Xin Li
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, P. R. China.,BABRI Centre, Beijing Normal University, Beijing, P. R. China
| | - Junying Zhang
- BABRI Centre, Beijing Normal University, Beijing, P. R. China.,Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, P. R. China
| | - Kewei Chen
- Banner Alzheimer's Institute, Phoenix, AZ 85006, USA
| | - Zhongwan Liu
- Department of Psychology, The University of Hong Kong, Hong Kong, China
| | - He Li
- BABRI Centre, Beijing Normal University, Beijing, P. R. China.,Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, P. R. China
| | - Jialing Fan
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, P. R. China.,BABRI Centre, Beijing Normal University, Beijing, P. R. China
| | - Ting Qin
- BABRI Centre, Beijing Normal University, Beijing, P. R. China
| | - Liang Luo
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, P. R. China
| | - Zhanjun Zhang
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, P. R. China.,BABRI Centre, Beijing Normal University, Beijing, P. R. China
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113
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Teghil A, Di Vita A, Pietranelli V, Matano A, Boccia M. Duration reproduction in regular and irregular contexts after unilateral brain damage: Evidence from voxel-based lesion-symptom mapping and atlas-based hodological analysis. Neuropsychologia 2020; 147:107577. [PMID: 32758553 DOI: 10.1016/j.neuropsychologia.2020.107577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
It has been proposed that not completely overlapping brain networks support interval timing depending on whether or not an external, predictable temporal cue is provided during the task, aiding time estimation. Here we tested this hypothesis in a neuropsychological study, using both a topological approach - through voxel-based lesion-symptom mapping (VLSM), that assesses the relation between continuous behavioral scores and lesion information on a voxel-by-voxel basis - and a hodological approach, using an atlas-based tractography. A group of patients with unilateral focal brain lesions and their matched controls performed a duration reproduction task assessing time processing in two conditions, namely with regularly spaced stimuli during encoding and reproduction (Regular condition), and with irregularly spaced stimuli during the same task (Irregular condition). VLSM analyses showed that scores in the two conditions were associated with lesions involving partly separable clusters of voxels, with lower performance only in the Irregular condition being related to lesions involving the right insular cortex. Performance in both conditions correlated with the probability of disconnection of the right frontal superior longitudinal tract, and of the superior and middle branches of the right superior longitudinal fasciculus. These findings suggest that the dissociation between timing in regular and irregular contexts is not complete, since performance in both conditions relies on the integrity of a common suprasecond timing network. Furthermore, they are consistent with the hypothesis that tracking time without the aid of external cues selectively relies on the integration of psychophysiological changes in the right insula.
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Affiliation(s)
- Alice Teghil
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy.
| | - Antonella Di Vita
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy; Department of Psychology, "Sapienza" University of Rome, Rome, Italy
| | | | | | - Maddalena Boccia
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy; Department of Psychology, "Sapienza" University of Rome, Rome, Italy
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114
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Disrupted Resting-state Functional Connectivity of the Nucleus Basalis of Meynert in Parkinson’s Disease with Mild Cognitive Impairment. Neuroscience 2020; 442:228-236. [DOI: 10.1016/j.neuroscience.2020.07.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/10/2020] [Accepted: 07/05/2020] [Indexed: 02/08/2023]
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115
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Clinical and neuroimaging factors associated with aphasia severity in stroke patients: diffusion tensor imaging study. Sci Rep 2020; 10:12874. [PMID: 32733102 PMCID: PMC7393375 DOI: 10.1038/s41598-020-69741-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 07/13/2020] [Indexed: 11/24/2022] Open
Abstract
This study investigated factors associated with aphasia severity at both 2 weeks and 3 months after stroke using demographic and clinical variables, brain diffusion tensor imaging (DTI) parameters, and lesion volume measurements. Patients with left hemisphere stroke were assessed at 2 weeks (n = 68) and at 3 months (n = 20) after stroke. Demographic, clinical, and neuroimaging data were collected; language functions were assessed using the Western Aphasia Battery. For neuroimaging, DTI parameters, including the laterality index (LI) of fractional anisotropy (FA), axial diffusivity (AD), radial diffusivity, mean diffusivity and fibre density (FD) of the arcuate fasciculus (AF), and lesion volume, were measured. Lesion volume, cortical involvement, and the National Institutes of Health Stroke Scale score significantly predicted aphasia severity at 2 weeks after stroke, whereas the aphasia quotient and presence of depression during the early subacute stage were significant predictors at 3 months after stroke. According to Pearson correlation, LI-AD and LI-FD were significantly correlated with the aphasia quotient 2 weeks after ischaemic stroke, and the LI-FA was significantly correlated with the aphasia quotient 2 weeks after haemorrhagic stroke, suggesting that the extent and mechanism of AF injuries differ between ischaemic and haemorrhagic strokes. These differences may contribute to aphasia severity.
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116
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Maldonado IL, Parente de Matos V, Castro Cuesta TA, Herbet G, Destrieux C. The human cingulum: From the limbic tract to the connectionist paradigm. Neuropsychologia 2020; 144:107487. [PMID: 32470344 DOI: 10.1016/j.neuropsychologia.2020.107487] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 03/22/2020] [Accepted: 05/04/2020] [Indexed: 12/21/2022]
Abstract
The cingulum is a core component of the limbic lobe and part of the circuit that was described by Papez where environmental experiences become endowed with emotional awareness. Recent techniques for the study of cerebral connectivity have updated this fasciculus' morphology and led to the acknowledgment that its involvement in superior functions goes far beyond emotion processing. Long and robust, the cingulum is a long association fasciculus with terminations in all cerebral lobes. These observations plead for a pivotal rethinking of its role in the human brain and lead to the conclusion that to merely consider it as the main fasciculus of the limbic system was actually a reductionism. This paper summarizes the key facts regarding why the cingulum is now perceived as a primary interconnecting apparatus in the medial aspect of the cerebral hemisphere.
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Affiliation(s)
- Igor Lima Maldonado
- UMR Inserm U1253, IBrain, Université de Tours, Tours, France; Le Studium Loire Valley Institute for Advanced Studies, Orleans, France; CHRU de Tours, Tours, France; Departamento de Biomorfologia - Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil; Programa de Pós-Graduação Em Medicina e Saúde, Universidade Federal da Bahia, Salvador, Brazil.
| | | | - Taryn Ariadna Castro Cuesta
- Programa de Pós-Graduação Em Medicina e Saúde, Universidade Federal da Bahia, Salvador, Brazil; Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
| | - Guillaume Herbet
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France; University of Montpellier, Institute of Functional Genomics, INSERM, 1191, Montpellier, France
| | - Christophe Destrieux
- UMR Inserm U1253, IBrain, Université de Tours, Tours, France; CHRU de Tours, Tours, France; Laboratory of Anatomy, Faculté de Médecine, 10 Bd Tonnellé, 37032, Tours, France
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117
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Dissociating the white matter tracts connecting the temporo-parietal cortical region with frontal cortex using diffusion tractography. Sci Rep 2020; 10:8186. [PMID: 32424290 PMCID: PMC7235086 DOI: 10.1038/s41598-020-64124-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 04/06/2020] [Indexed: 01/24/2023] Open
Abstract
Three major white matter pathways connect the posterior temporal region and the adjacent inferior parietal lobule with the lateral frontal cortex: the arcuate fasciculus (AF), and the second and third branches of the superior longitudinal fasciculus (SLF II and SLF III). These pathways are found also in nonhuman primate brains where they play specific roles in auditory and spatial processing. The precise origin, course, and termination of these pathways has been examined in invasive tract tracing studies in macaque monkeys. Here we use this prior knowledge to improve dissections of these pathways in vivo in the human brain using diffusion Magnetic Resonance Imaging (MRI) tractography. In this study, the AF, originating from the posterior temporal cortex, has been successfully separated from the SLF II and SLF III tracts originating from the angular and supramarginal gyri of the inferior parietal lobule, respectively. The latter two pathways, i.e. SLF II and SLF III, have also been clearly separated from each other. Furthermore, we report for the first time in the human brain the dorsal branch of the AF that targets the posterior dorsolateral frontal region. These improved dissection protocols provide a solid basis for exploring the respective functional roles of these major fasciculi.
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118
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Cai W, Zhao M, Liu J, Liu B, Yu D, Yuan K. Right arcuate fasciculus and superior longitudinal fasciculus abnormalities in primary insomnia. Brain Imaging Behav 2020; 13:1746-1755. [PMID: 31327125 DOI: 10.1007/s11682-019-00160-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Primary insomnia (PI) is a very common phenomenon and associated with functional impairments of attention, memory and mood regulation. However, its neurobiology is poorly understood. To date, the studies about integrity of white matter (WM) tracts in PI patients have been still rare. In the present study, we used Automated Fiber Quantification (AFQ), which reliably and efficiently quantified diffusion measurements at multiple locations along the WM trajectory based on diffusion tensor imaging (DTI), to assess WM diffusion properties differences between 23 PI patients and 32 matched healthy controls in 18 tracts. The relationships between neuroimaging differences and sleep behaviors were explored, including Pittsburgh Sleep Quality Index (PSQI) and Insomnia Severity Index Scale (ISI). Compared with healthy control group, right arcuate fasciculus (Arc) and superior longitudinal fasciculus (SLF) showed significant higher fractional anisotropy (FA), mean diffusivity (MD) and radial diffusivity (RD) along tract length in PI patients (FWE corrected, p < 0.01). Axial diffusivity (AD) for PI patients was higher in right Arc and lower in right SLF. Correlation analyses revealed that FA of right Arc and MD of right SLF were negatively correlated with PSQI score in PI patients, and AD of right Arc and FA of right SLF were positively correlated with PSQI score. Negative correlation was observed between FA of right Arc and AD of right SLF and ISI score in PI patients. Our findings can help us to improve the understanding of the neural mechanisms of primary insomnia at abnormalities in WM microstructure.
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Affiliation(s)
- Wanye Cai
- School of Life Science and Technology, Xidian University, Xi'an, Shanxi, 710071, People's Republic of China.,Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, Xi'an, People's Republic of China
| | - Meng Zhao
- School of Life Science and Technology, Xidian University, Xi'an, Shanxi, 710071, People's Republic of China.,Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, Xi'an, People's Republic of China
| | - Jingjing Liu
- School of Life Science and Technology, Xidian University, Xi'an, Shanxi, 710071, People's Republic of China.,Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, Xi'an, People's Republic of China
| | - Bo Liu
- Department of Neurology, The First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, 014010, People's Republic of China
| | - Dahua Yu
- Inner Mongolia Key Laboratory of Pattern Recognition and Intelligent Image Processing, Information Processing Laboratory, School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, 014010, People's Republic of China.
| | - Kai Yuan
- School of Life Science and Technology, Xidian University, Xi'an, Shanxi, 710071, People's Republic of China. .,Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, Xi'an, People's Republic of China. .,Inner Mongolia Key Laboratory of Pattern Recognition and Intelligent Image Processing, Information Processing Laboratory, School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, 014010, People's Republic of China.
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119
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Gracia-Marco L, Esteban-Cornejo I, Ubago-Guisado E, Rodriguez-Ayllon M, Mora-Gonzalez J, Solis-Urra P, Cadenas-Sanchez C, Verdejo-Roman J, Catena A, Erickson KI, Ortega FB. Lean mass index is positively associated with white matter volumes in several brain regions in children with overweight/obesity. Pediatr Obes 2020; 15:e12604. [PMID: 31920013 DOI: 10.1111/ijpo.12604] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 12/02/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND The relationship of obesity with grey and white matter volumes has been examined in several studies, and the results are decidedly mixed. OBJECTIVE To investigate the associations of body mass index (BMI), fat mass index (FMI) and lean mass index (LMI) with total and regional grey and white matter volumes. METHODS This is a cross-sectional study involving 100 children (60% boys) with overweight/obesity. T1-weighted images were acquired using magnetic resonance imaging. Dual energy X-ray absorptiometry was used to measure body composition. Separate hierarchical regression analyses were performed between predictor variables (BMI, FMI and LMI) and the total brain volumes including sex, years from peak height velocity and parental education as covariates. In addition, FMI was added as a covariate when LMI was the predictor and vice versa. Statistical analyses of imaging data were performed using three whole-brain voxel-wise multiple regression models and adjusted by the same covariates. RESULTS LMI was positively associated with white matter in numerous regions and to a lower extent, with grey matter regions. Further, the relationship between LMI, and grey and white matter regions was independent of FMI levels. CONCLUSIONS LMI seems to be a positive predictor of regional white matter volumes in children with overweight/obesity.
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Affiliation(s)
- Luis Gracia-Marco
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.,Growth, Exercise, Nutrition and Development Research Group, Universidad de Zaragoza, Zaragoza, Spain
| | - Irene Esteban-Cornejo
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Esther Ubago-Guisado
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.,Health and Social Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain
| | - Maria Rodriguez-Ayllon
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Jose Mora-Gonzalez
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Patricio Solis-Urra
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.,IRyS Research Group, School of Physical Education, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Cristina Cadenas-Sanchez
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.,MOVE-IT Research Group and Department of Physical Education, Faculty of Education Sciences, University of Cádiz, Cádiz, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Puerta del Mar University Hospital, University of Cádiz, Cádiz, Spain
| | - Juan Verdejo-Roman
- Mind, Brain and Behavior Research Center, University of Granada (CIMCYC-UGR), Granada, Spain.,Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Centre for Biomedical Technology (CTB), Madrid, Spain
| | - Andres Catena
- Department of Experimental Psychology, Mind, Brain and Behaviour Research Centre (CIMCYC), University of Granada, Granada, Spain
| | - Kirk I Erickson
- Brain Aging and Cognitive Health Lab, Department of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Francisco B Ortega
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain
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120
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Komaitis S, Skandalakis GP, Kalyvas AV, Drosos E, Lani E, Emelifeonwu J, Liakos F, Piagkou M, Kalamatianos T, Stranjalis G, Koutsarnakis C. Dorsal component of the superior longitudinal fasciculus revisited: novel insights from a focused fiber dissection study. J Neurosurg 2020; 132:1265-1278. [PMID: 30835690 DOI: 10.3171/2018.11.jns182908] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 11/15/2018] [Indexed: 01/12/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the anatomical consistency, morphology, axonal connectivity, and correlative topography of the dorsal component of the superior longitudinal fasciculus (SLF-I) since the current literature is limited and ambiguous. METHODS Fifteen normal, adult, formalin-fixed cerebral hemispheres were studied through a medial to lateral fiber microdissection technique. In 5 specimens, the authors performed stepwise focused dissections of the lateral cerebral aspect to delineate the correlative anatomy between the SLF-I and the other two SLF subcomponents, namely the SLF-II and SLF-III. RESULTS The SLF-I was readily identified as a distinct fiber tract running within the cingulate or paracingulate gyrus and connecting the anterior cingulate cortex, the medial aspect of the superior frontal gyrus, the pre-supplementary motor area (pre-SMA), the SMA proper, the paracentral lobule, and the precuneus. With regard to the morphology of the SLF-I, two discrete segments were consistently recorded: an anterior and a posterior segment. A clear cleavage plane could be developed between the SLF-I and the cingulum, thus proving their structural integrity. Interestingly, no anatomical connection was revealed between the SLF-I and the SLF-II/SLF-III complex. CONCLUSIONS Study results provide novel and robust anatomical evidence on the topography, morphology, and subcortical architecture of the SLF-I. This fiber tract was consistently recorded as a distinct anatomical entity of the medial cerebral aspect, participating in the axonal connectivity of high-order paralimbic areas.
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Affiliation(s)
- Spyridon Komaitis
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- Departments of2Neurosurgery and
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
| | - Georgios P Skandalakis
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
| | - Aristotelis V Kalyvas
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- Departments of2Neurosurgery and
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
| | - Evangelos Drosos
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- Departments of2Neurosurgery and
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
| | - Evgenia Lani
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
| | - John Emelifeonwu
- 4Department of Clinical Neurosciences, Western General Hospital; and
- 5Edinburgh Microneurosurgery Education Laboratory, Department of Clinical Neurosciences, Edinburgh, United Kingdom
| | - Faidon Liakos
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
| | - Maria Piagkou
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
| | | | - George Stranjalis
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- Departments of2Neurosurgery and
- 6Hellenic Center for Neurosurgical Research, "Petros Kokkalis," Athens, Greece
| | - Christos Koutsarnakis
- 1Athens Microneurosurgery Laboratory, Evangelismos Hospital
- Departments of2Neurosurgery and
- 3Anatomy, National and Kapodistrian University of Athens, School of Medicine
- 5Edinburgh Microneurosurgery Education Laboratory, Department of Clinical Neurosciences, Edinburgh, United Kingdom
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121
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Asaridou SS, Demir-Lira ÖE, Goldin-Meadow S, Levine SC, Small SL. Language development and brain reorganization in a child born without the left hemisphere. Cortex 2020; 127:290-312. [PMID: 32259667 DOI: 10.1016/j.cortex.2020.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 11/08/2019] [Accepted: 02/19/2020] [Indexed: 11/18/2022]
Abstract
We present a case of a 14-year-old girl born without the left hemisphere due to prenatal left internal carotid occlusion. We combined longitudinal language and cognitive assessments with functional and structural neuroimaging data to situate the case within age-matched, typically developing children. Despite having had a delay in getting language off the ground during the preschool years, our case performed within the normal range on a variety of standardized language tests, and exceptionally well on phonology and word reading, during the elementary and middle school years. Moreover, her spatial, number, and reasoning skills also fell in the average to above-average range based on assessments during these time periods. Functional MRI data revealed activation in right fronto-temporal areas when listening to short stories, resembling the bilateral activation patterns in age-matched typically developing children. Diffusion MRI data showed significantly larger dorsal white matter association tracts (the direct and anterior segments of the arcuate fasciculus) connecting areas active during language processing in her remaining right hemisphere, compared to either hemisphere in control children. We hypothesize that these changes in functional and structural brain organization are the result of compensatory brain plasticity, manifesting in unusually large right dorsal tracts, and exceptional performance in phonology, speech repetition, and decoding. More specifically, we posit that our case's large white matter connections might have played a compensatory role by providing fast and reliable transfer of information between cortical areas for language in the right hemisphere.
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Affiliation(s)
- Salomi S Asaridou
- University of California, Irvine, Department of Neurology, Biological Sciences III, Irvine, CA, USA.
| | - Ö Ece Demir-Lira
- The University of Iowa, Department of Psychological and Brain Sciences, DeLTA Center, Iowa Neuroscience Institute, Iowa City, IA, USA
| | - Susan Goldin-Meadow
- Department of Psychology, Center for Gesture, Sign and Language, University of Chicago, Chicago, IL, USA
| | - Susan C Levine
- University of Chicago, Department of Psychology, Chicago, IL, USA
| | - Steven L Small
- University of California, Irvine, Department of Neurology, Biological Sciences III, Irvine, CA, USA
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122
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Cipolotti L, Molenberghs P, Dominguez J, Smith N, Smirni D, Xu T, Shallice T, Chan E. Fluency and rule breaking behaviour in the frontal cortex. Neuropsychologia 2020; 137:107308. [PMID: 31866432 PMCID: PMC6996283 DOI: 10.1016/j.neuropsychologia.2019.107308] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 12/05/2019] [Accepted: 12/14/2019] [Indexed: 11/22/2022]
Abstract
Design (DF) and phonemic fluency tests (FAS; D-KEFS, 2001) are commonly used to investigate voluntary generation. Despite this, several important issues remain poorly investigated. In a sizeable sample of patients with focal left or right frontal lesion we established that voluntary generation performance cannot be accounted for by fluid intelligence. For DF we found patients performed significantly worse than healthy controls (HC) only on the switch condition. However, no significant difference between left and right frontal patients was found. In contrast, left frontal patients were significantly impaired when compared with HC and right frontal patients on FAS. These lateralization findings were complemented, for the first time, by three neuroimaging; investigations. A traditional frontal subgrouping method found significant differences on FAS between patients with or without Left Inferior Frontal Gyrus lesions involving BA 44 and/or 45. Parcel Based Lesion Symptom Mapping (PLSM) found lower scores on FAS were significantly associated with damage to posterior Left Middle Frontal Gyrus. An increase in rule break errors, so far only anecdotally reported, was associated with damage to the left dorsal anterior cingulate and left body of the corpus callosum, supporting the idea that conflict resolution and monitoring impairments may play a role. Tractwise statistical analysis (TSA) revealed that patients with disconnection; in the left anterior thalamic projections, frontal aslant tract, frontal; orbitopolar tract, pons, superior longitudinal fasciculus I and II performed significantly worse than patients without disconnection in these tracts on FAS. In contrast, PLSM and TSA analyses did not reveal any significant relationship between lesion location and performance on the DF switch condition. Overall, these findings suggest DF may have limited utility as a tool in detecting lateralized frontal executive dysfunction, whereas FAS and rule break behavior appears to be linked to a set of well localized left frontal grey matter regions and white matter tracts.
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Affiliation(s)
- Lisa Cipolotti
- Department of Neuropsychology, National Hospital for Neurology and Neurosurgery, London, UK.
| | | | - Juan Dominguez
- School of Psychology and Mary Mackillop Institute for Health Research, Australian Catholic University, Australia
| | - Nicola Smith
- Department of Neuropsychology, National Hospital for Neurology and Neurosurgery, London, UK
| | - Daniela Smirni
- Dipartimento di Scienze Psicologiche, Pedagogiche e della Formazione, Università degli Studi di Palermo, Palermo, Italy
| | - Tianbo Xu
- Institute of Neurology, UCL, London, WC1N 3BG, UK
| | - Tim Shallice
- Institute of Cognitive Neuroscience, University College London, UK; International School for Advanced Studies (SISSA-ISAS), Trieste, Italy
| | - Edgar Chan
- Department of Neuropsychology, National Hospital for Neurology and Neurosurgery, London, UK
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123
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Fuhrmann D, Simpson-Kent IL, Bathelt J, Kievit RA. A Hierarchical Watershed Model of Fluid Intelligence in Childhood and Adolescence. Cereb Cortex 2020; 30:339-352. [PMID: 31211362 PMCID: PMC7029679 DOI: 10.1093/cercor/bhz091] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/18/2019] [Accepted: 04/04/2019] [Indexed: 11/13/2022] Open
Abstract
Fluid intelligence is the capacity to solve novel problems in the absence of task-specific knowledge and is highly predictive of outcomes like educational attainment and psychopathology. Here, we modeled the neurocognitive architecture of fluid intelligence in two cohorts: the Centre for Attention, Leaning and Memory sample (CALM) (N = 551, aged 5-17 years) and the Enhanced Nathan Kline Institute-Rockland Sample (NKI-RS) (N = 335, aged 6-17 years). We used multivariate structural equation modeling to test a preregistered watershed model of fluid intelligence. This model predicts that white matter contributes to intermediate cognitive phenotypes, like working memory and processing speed, which, in turn, contribute to fluid intelligence. We found that this model performed well for both samples and explained large amounts of variance in fluid intelligence (R2CALM = 51.2%, R2NKI-RS = 78.3%). The relationship between cognitive abilities and white matter differed with age, showing a dip in strength around ages 7-12 years. This age effect may reflect a reorganization of the neurocognitive architecture around pre- and early puberty. Overall, these findings highlight that intelligence is part of a complex hierarchical system of partially independent effects.
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Affiliation(s)
- Delia Fuhrmann
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Ivan L Simpson-Kent
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Joe Bathelt
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Rogier A Kievit
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
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124
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Middle longitudinal fascicle is associated with semantic processing deficits in primary progressive aphasia. NEUROIMAGE-CLINICAL 2019; 25:102115. [PMID: 31865024 PMCID: PMC6931233 DOI: 10.1016/j.nicl.2019.102115] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 11/26/2019] [Accepted: 12/03/2019] [Indexed: 02/05/2023]
Abstract
The middle longitudinal fascicle (MdLF) is a recently delineated association cortico-cortical fiber pathway in humans, connecting superior temporal gyrus and temporal pole principally with the angular gyrus, and is likely to be involved in language processing. However, the MdLF has not been studied in language disorders as primary progressive aphasia (PPA). We hypothesized that the MdLF will exhibit evidence of neurodegeneration in PPA patients. In this study, 20 PPA patients and 25 healthy controls were recruited in the Primary Progressive Aphasia program in the Massachusetts General Hospital Frontotemporal Disorders Unit. We used diffusion tensor imaging (DTI) tractography to reconstruct the MdLF and extract tract-specific DTI metrics (fractional anisotropy (FA), radial diffusivity (RD), mean diffusivity (MD) and axial diffusivity (AD)) to assess white matter changes in PPA and their relationship with language impairments. We found severe WM damage in the MdLF in PPA patients, which was principally pronounced in the left hemisphere. Moreover, the WM alterations in the MdLF in the dominant hemisphere were significantly correlated with impairments in word comprehension and naming, but not with articulation and fluency. In addition, asymmetry analysis revealed that the DTI metrics of controls were similar for each hemisphere, whereas PPA patients had clear laterality differences in MD, AD and RD. These findings add new insight into the localization and severity of white matter fiber bundle neurodegeneration in PPA, and provide evidence that degeneration of the MdLF contribute to impairment in semantic processing and lexical retrieval in PPA. Integrity loss of middle longitudinal fascicle (MdLF) in PPA. MdLF degeneration correlated with impairments in word comprehension and retrieval. MdLF not significantly correlated with articulation or fluency. Connectivity model: gray/white matter areas involved in human semantic processing.
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125
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Correlation between Executive Network Integrity and Sarcopenia in Patients with Parkinson's Disease. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16244884. [PMID: 31817127 PMCID: PMC6950743 DOI: 10.3390/ijerph16244884] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 01/18/2023]
Abstract
Background: Sarcopenia is critically associated with morbidity and mortality in the progression of Parkinson's disease (PD). However, analyses of clinical severity and brain changes, such as white matter (WM) alterations in PD patients with sarcopenia are limited. Further understanding of the factors associated with sarcopenia may provide a focused screen and potential for early intervention in PD patients. Methods: 52 PD patients and 19 healthy participants accepted dual-energy X-ray absorptiometry to measure the body composition. Using diffusion tensor imaging, the difference of WM integrity was measured between PD patients with sarcopenia (PDSa) and without sarcopenia (PDNSa). Multivariate analysis was performed to explore the relationships between clinical factors, WM integrity, and sarcopenia in PD patients. Results: 21 PD patients (40.4%) had sarcopenia. PDSa had a higher Unified Parkinson's Disease Rating Scale (UPDRS III) score, lower body mass index (BMI) and lower fat weight compared with the PDNSa. Additionally, PDSa patients exhibited lower fractional anisotropy accompanied by higher radial diffusivity and/or higher mean diffusivity in the fronto-striato-thalamic circuits, including bilateral cingulum, left superior longitudinal fasciculus, left genu of corpus callosum, and right anterior thalamic radiation, which participate in the executive function. In addition, decreased muscle mass was associated with worse WM integrity in these regions. Multiple linear regression analysis revealed that WM integrity in the left cingulum, right anterior thalamic radiation, together with gender (male) significantly predicted muscle mass in PD patients. Conclusions: WM alterations in the executive network, such as the fronto-striato-thalamic circuits, may indicate a risk factor for ongoing sarcopenia in PD patients. The effectiveness of using executive function to serve as a prodromal marker of sarcopenia in PD patients should be evaluated in future studies.
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126
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Mohajer B, Masoudi M, Ashrafi A, Mohammadi E, Bayani Ershadi AS, Aarabi MH, Uban KA. Structural white matter alterations in male adults with high functioning autism spectrum disorder and concurrent depressive symptoms; a diffusion tensor imaging study. J Affect Disord 2019; 259:40-46. [PMID: 31437700 DOI: 10.1016/j.jad.2019.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND Autism spectrum disorder (ASD), a prevalent developmental condition, is associated with comorbid mood disorders, most importantly depression. Here, we explored the underlying association between brain white matter microstructural integrity, assessed by diffusion tensor imaging (DTI), and depressive symptoms, in male adults with high-functioning ASD. METHOD To assess our main purpose, Autism Brain Imaging Data Exchange II dataset was used to acquire brain diffusion imaging from 26 adult male patients with ASD ranging from 18 to 62 years of age, and 26 age and gender-matched typically developed control subjects. Participants were evaluated for depressive symptoms manifestation by the Beck Depression Index (BDI). DWI images were preprocessed and analyzed for DTI scalers in the "ExploreDTI" toolbox. Adjusted linear regression models were used. Association between normalized BDI score and its interaction with diagnosis, as predictors, and measures of fractional anisotropy (FA) and mean diffusivity (MD) of regions of interest according to Mori atlas was assessed. RESULT Significant lower microstructural integrity of white matter was found in association with higher BDI scores in ASD group, mainly in regions of anterior limb of internal capsule (ALIC) and corona radiata. Also, a statistically significant positive interaction between BDI and ASD was seen in FA of left ALIC. DISCUSSION Considering similar regional brain white matter involvement with the imaging studies of depression in the typically developed population, we propose that these alterations of white matter tracts in depressive symptoms of adult ASD subjects might be, at least, similar to depression in typically developed population.
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Affiliation(s)
- Bahram Mohajer
- Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Masoudi
- Faculty of medicine, Tehran university of medical science, Tehran, Iran
| | - Agaah Ashrafi
- Department of Psychiatry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Esmaeil Mohammadi
- Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Sasan Bayani Ershadi
- Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | | | - Kristina A Uban
- Program in Public Health, University of California Irvine, Irvine, USA
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127
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Kalyvas A, Koutsarnakis C, Komaitis S, Karavasilis E, Christidi F, Skandalakis GP, Liouta E, Papakonstantinou O, Kelekis N, Duffau H, Stranjalis G. Mapping the human middle longitudinal fasciculus through a focused anatomo-imaging study: shifting the paradigm of its segmentation and connectivity pattern. Brain Struct Funct 2019; 225:85-119. [PMID: 31773331 DOI: 10.1007/s00429-019-01987-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022]
Abstract
Τhe middle longitudinal fasciculus (MdLF) was initially identified in humans as a discrete subcortical pathway connecting the superior temporal gyrus (STG) to the angular gyrus (AG). Further anatomo-imaging studies, however, proposed more sophisticated but conflicting connectivity patterns and have created a vague perception on its functional anatomy. Our aim was, therefore, to investigate the ambiguous structural architecture of this tract through focused cadaveric dissections augmented by a tailored DTI protocol in healthy participants from the Human Connectome dataset. Three segments and connectivity patterns were consistently recorded: the MdLF-I, connecting the dorsolateral Temporal Pole (TP) and STG to the Superior Parietal Lobule/Precuneus, through the Heschl's gyrus; the MdLF-II, connecting the dorsolateral TP and the STG with the Parieto-occipital area through the posterior transverse gyri and the MdLF-III connecting the most anterior part of the TP to the posterior border of the occipital lobe through the AG. The lack of an established termination pattern to the AG and the fact that no significant leftward asymmetry is disclosed tend to shift the paradigm away from language function. Conversely, the theory of "where" and "what" auditory pathways, the essential relationship of the MdLF with the auditory cortex and the functional role of the cortical areas implicated in its connectivity tend to shift the paradigm towards auditory function. Allegedly, the MdLF-I and MdLF-II segments could underpin the perception of auditory representations; whereas, the MdLF-III could potentially subserve the integration of auditory and visual information.
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Affiliation(s)
- Aristotelis Kalyvas
- Athens Microneurosurgery Laboratory, Evangelismos Hospital, Athens, Greece.,Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece.,Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Christos Koutsarnakis
- Athens Microneurosurgery Laboratory, Evangelismos Hospital, Athens, Greece. .,Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece. .,Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
| | - Spyridon Komaitis
- Athens Microneurosurgery Laboratory, Evangelismos Hospital, Athens, Greece.,Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece.,Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstratios Karavasilis
- Second Department of Radiology, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Foteini Christidi
- First Department of Neurology, Aeginition Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgios P Skandalakis
- Athens Microneurosurgery Laboratory, Evangelismos Hospital, Athens, Greece.,Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelia Liouta
- Athens Microneurosurgery Laboratory, Evangelismos Hospital, Athens, Greece.,Hellenic Center for Neurosurgical Research, "PetrosKokkalis", Athens, Greece
| | - Olympia Papakonstantinou
- Second Department of Radiology, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos Kelekis
- Second Department of Radiology, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Hugues Duffau
- Department of Neurosurgery, Montpellier University Medical Center, Gui de Chauliac Hospital, Montpellier, France
| | - George Stranjalis
- Athens Microneurosurgery Laboratory, Evangelismos Hospital, Athens, Greece.,Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece.,Hellenic Center for Neurosurgical Research, "PetrosKokkalis", Athens, Greece
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128
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Oschwald J, Mérillat S, Liem F, Röcke C, Martin M, Jäncke L. Lagged Coupled Changes Between White Matter Microstructure and Processing Speed in Healthy Aging: A Longitudinal Investigation. Front Aging Neurosci 2019; 11:298. [PMID: 31824294 PMCID: PMC6881240 DOI: 10.3389/fnagi.2019.00298] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 10/16/2019] [Indexed: 01/16/2023] Open
Abstract
Age-related differences in white matter (WM) microstructure have been linked to lower performance in tasks of processing speed in healthy older individuals. However, only few studies have examined this link in a longitudinal setting. These investigations have been limited to the correlation of simultaneous changes in WM microstructure and processing speed. Still little is known about the nature of age-related changes in WM microstructure, i.e., regionally distinct vs. global changes. In the present study, we addressed these open questions by exploring whether previous changes in WM microstructure were related to subsequent changes in processing speed: (a) 1 year later; or (b) 2 years later. Furthermore, we investigated whether age-related changes in WM microstructure were regionally specific or global. We used data from four occasions (covering 4 years) of the Longitudinal Healthy Aging Brain (LHAB) database project (N = 232; age range at baseline = 64–86). As a measure of WM microstructure, we used mean fractional anisotropy (FA) in 10 major WM tracts averaged across hemispheres. Processing speed was measured with four cognitive tasks. Statistical analyses were conducted with bivariate latent change score (LCS) models. We found, for the first time, evidence for lagged couplings between preceding changes in FA and subsequent changes in processing speed 2 years, but not 1 year later in some of the WM tracts (anterior thalamic radiation, superior longitudinal fasciculus). Our results supported the notion that FA changes were different between regional WM tracts rather than globally shared, with some tracts showing mean declines in FA, and others remaining relatively stable across 4 years.
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Affiliation(s)
- Jessica Oschwald
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland
| | - Susan Mérillat
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland
| | - Franziskus Liem
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland
| | - Christina Röcke
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland
| | - Mike Martin
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland.,Division of Gerontopsychology, Psychological Institute, University of Zurich, Zurich, Switzerland
| | - Lutz Jäncke
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Zurich, Switzerland.,Division of Neuropsychology, Psychological Institute, University of Zurich, Zurich, Switzerland
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129
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D’Souza S, Ormond DR, Costabile J, Thompson JA. Fiber-tract localized diffusion coefficients highlight patterns of white matter disruption induced by proximity to glioma. PLoS One 2019; 14:e0225323. [PMID: 31751402 PMCID: PMC6874090 DOI: 10.1371/journal.pone.0225323] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/01/2019] [Indexed: 01/08/2023] Open
Abstract
Gliomas account for 26.5% of all primary central nervous system tumors. Recent studies have used diffusion tensor imaging (DTI) to extract white matter fibers and the diffusion coefficients derived from MR processing to provide useful, non-invasive insights into the extent of tumor invasion, axonal integrity, and gross differentiation of glioma from metastasis. Here, we extend this work by examining whether a tract-based analysis can improve non-invasive localization of tumor impact on white matter integrity. This study retrospectively analyzed preoperative magnetic resonance sequences highlighting contrast enhancement and DTI scans of 13 subjects that were biopsy-confirmed to have either high or low-grade glioma. We reconstructed the corticospinal tract and superior longitudinal fasciculus by applying atlas-based regions of interest to fibers derived from whole-brain deterministic streamline tractography. Within-subject comparison of hemispheric diffusion coefficients (e.g., fractional anisotropy and mean diffusivity) indicated higher levels of white matter degradation in the ipsilesional hemisphere. Novel application of along-tract analyses revealed that tracts traversing the tumor region showed significant white matter degradation compared to the contralesional hemisphere and ipsilesional tracts displaced by the tumor.
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Affiliation(s)
- Shawn D’Souza
- Department of Molecular Biology, University of Colorado, Boulder, CO, United States of America
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
| | - D. Ryan Ormond
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
| | - Jamie Costabile
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
| | - John A. Thompson
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
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130
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Jennings JE, Kassam AB, Fukui MB, Monroy-Sosa A, Chakravarthi S, Kojis N, Rovin RA. The Surgical White Matter Chassis: A Practical 3-Dimensional Atlas for Planning Subcortical Surgical Trajectories. Oper Neurosurg (Hagerstown) 2019; 14:469-482. [PMID: 28961936 DOI: 10.1093/ons/opx177] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 07/13/2017] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The imperative role of white matter preservation in improving surgical functional outcomes is now recognized. Understanding the fundamental white matter framework is essential for translating the anatomic and functional literature into practical strategies for surgical planning and neuronavigation. OBJECTIVE To present a 3-dimensional (3-D) atlas of the structural and functional scaffolding of human white matter-ie, a "Surgical White Matter Chassis (SWMC)"-that can be used as an organizational tool in designing precise and individualized trajectory-based neurosurgical corridors. METHODS Preoperative diffusion tensor imaging magnetic resonance images were obtained prior to each of our last 100 awake subcortical resections, using a clinically available 3.0 Tesla system. Tractography was generated using a semiautomated deterministic global seeding algorithm. Tract data were conceptualized as a 3-D modular chassis based on the 3 major fiber types, organized along median and paramedian planes, with special attention to limbic and neocortical association tracts and their interconnections. RESULTS We discuss practical implementation of the SWMC concept, and highlight its use in planning select illustrative cases. Emphasis has been given to developing practical understanding of the arcuate fasciculus, uncinate fasciculus, and vertical rami of the superior longitudinal fasciculus, which are often-neglected fibers in surgical planning. CONCLUSION A working knowledge of white matter anatomy, as embodied in the SWMC, is of paramount importance to the planning of parafascicular surgical trajectories, and can serve as a basis for developing reliable safe corridors, or modules, toward the goal of "zero-footprint" transsulcal access to the subcortical space.
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Affiliation(s)
- Jonathan E Jennings
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
| | - Amin B Kassam
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
| | - Melanie B Fukui
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
| | - Alejandro Monroy-Sosa
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
| | - Srikant Chakravarthi
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
| | - Nathan Kojis
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
| | - Richard A Rovin
- Aurora Neuroscience Innovation Insti-tute, Aurora St. Luke's Medical Center, Milwaukee, Wisconsin
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131
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Conner AK, Briggs RG, Sali G, Rahimi M, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 13: Tractographic Description of the Inferior Fronto-Occipital Fasciculus. Oper Neurosurg (Hagerstown) 2019; 15:S436-S443. [PMID: 30260438 DOI: 10.1093/ons/opy267] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 11/13/2022] Open
Abstract
The inferior fronto-occipital fasciculus (IFOF) is a large white matter tract of the human cerebrum with functional connectivity associated with semantic language processing and goal-oriented behavior. However, little is known regarding the overall connectivity of this tract. Recently, the Human Connectome Project parcellated the human cortex into 180 distinct regions. In our other work, we have shown these various regions in relation to clinically applicable anatomy and function. Utilizing Diffusion Spectrum Magnetic Resonance Imaging tractography coupled with the human cortex parcellation data presented earlier in this supplement, we aim to describe the macro-connectome of the IFOF in relation to the linked parcellations present within the human cortex. The purpose of this study is to present this information in an indexed, illustrated, and tractographically aided series of figures and tables for anatomic and clinical reference.
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Affiliation(s)
- Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Conner AK, Briggs RG, Rahimi M, Sali G, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 12: Tractographic Description of the Middle Longitudinal Fasciculus. Oper Neurosurg (Hagerstown) 2019; 15:S429-S435. [PMID: 30260450 DOI: 10.1093/ons/opy266] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 01/08/2023] Open
Abstract
The middle longitudinal fasciculus (MdLF) is a small and somewhat controversial white matter tract of the human cerebrum, confined to the posterior superior temporal region from which it courses posteriorly to connect at the occipital-parietal interface. The tract appears to be involved in language processing as well as auditory organization and localization, while sub-serving other higher level cognitive functions that have yet to be fully elucidated. Little is known about the specific, interparcellation connections that integrate to form the MdLF. Utilizing diffusion spectrum magnetic resonance imaging tractography coupled with the human cortex parcellation data presented earlier in this supplement, we aim to describe the macro-connectome of the MdLF in relation to the linked parcellations present within the human cortex. The purpose of this study is to present this information in an indexed, illustrated, and tractographically aided series of figures and tables for anatomic and clinical reference.
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Affiliation(s)
- Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Briggs RG, Conner AK, Sali G, Rahimi M, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 17: Tractographic Description of the Cingulum. Oper Neurosurg (Hagerstown) 2019; 15:S462-S469. [PMID: 30260430 DOI: 10.1093/ons/opy271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 11/13/2022] Open
Abstract
In this supplement, we show a comprehensive anatomic atlas of the human cerebrum demonstrating all 180 distinct regions comprising the cerebral cortex. The location, functional connectivity, and structural connectivity of these regions are outlined, and where possible a discussion is included of the functional significance of these areas. In this chapter, we specifically address regions integrating to form the cingulum.
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Affiliation(s)
- Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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134
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Conner AK, Briggs RG, Rahimi M, Sali G, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 10: Tractographic Description of the Superior Longitudinal Fasciculus. Oper Neurosurg (Hagerstown) 2019; 15:S407-S422. [PMID: 30260421 DOI: 10.1093/ons/opy264] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 11/15/2022] Open
Abstract
The superior longitudinal fasciculus/arcuate white matter complex (SLF/AC) is the largest and most complex white matter tract of the human cerebrum with multiple inter-linked connections encompassing multiple cognitive functions such as language, attention, memory, emotion, and visuospatial function. However, little is known regarding the overall connectivity of this complex. Recently, the Human Connectome Project parcellated the human cortex into 180 distinct regions. Utilizing diffusion spectrum magnetic resonance imaging tractography coupled with the human cortex parcellation data presented earlier in this supplement, we aim to describe the macro-connectome of the SLF/AC in relation to the linked parcellations present within the human cortex. The purpose of this study is to present this information in an indexed, illustrated, and tractographically aided series of figures and tables for anatomic and clinical reference.
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Affiliation(s)
- Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Briggs RG, Conner AK, Sali G, Rahimi M, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 16: Tractographic Description of the Vertical Occipital Fasciculus. Oper Neurosurg (Hagerstown) 2019; 15:S456-S461. [PMID: 30260427 DOI: 10.1093/ons/opy270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 12/22/2022] Open
Abstract
In this supplement, we show a comprehensive anatomic atlas of the human cerebrum demonstrating all 180 distinct regions comprising the cerebral cortex. The location, functional connectivity, and structural connectivity of these regions are outlined, and where possible a discussion is included of the functional significance of these areas. In this chapter, we specifically address regions integrating to form the vertical occipital fasciculus.
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Affiliation(s)
- Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Briggs RG, Conner AK, Rahimi M, Sali G, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 14: Tractographic Description of the Frontal Aslant Tract. Oper Neurosurg (Hagerstown) 2019; 15:S444-S449. [PMID: 30260440 DOI: 10.1093/ons/opy268] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 01/21/2023] Open
Abstract
In this supplement, we show a comprehensive anatomic atlas of the human cerebrum demonstrating all 180 distinct regions comprising the cerebral cortex. The location, functional connectivity, and structural connectivity of these regions are outlined, and where possible a discussion is included of the functional significance of these areas. In this chapter, we specifically address the regions integrating to form the frontal aslant tract.
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Affiliation(s)
- Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Briggs RG, Rahimi M, Conner AK, Sali G, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 15: Tractographic Description of the Uncinate Fasciculus. Oper Neurosurg (Hagerstown) 2019; 15:S450-S455. [PMID: 30260439 DOI: 10.1093/ons/opy269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 11/14/2022] Open
Abstract
In this supplement, we show a comprehensive anatomic atlas of the human cerebrum demonstrating all 180 distinct regions comprising the cerebral cortex. The location, functional connectivity, and structural connectivity of these regions are outlined, and where possible a discussion is included of the functional significance of these areas. In this chapter, we specifically address the regions integrating to form the uncinate fasciculus.
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Affiliation(s)
- Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Alexopoulos G, Cikla U, El Tecle N, Kulkarni N, Pierson M, Mercier P, Kemp J, Coppens J, Mahmoud S, Sehi M, Bucholz R, Abdulrauf S. The Value of White Matter Tractography by Diffusion Tensor Imaging in Altering a Neurosurgeon's Operative Plan. World Neurosurg 2019; 132:e305-e313. [PMID: 31494311 DOI: 10.1016/j.wneu.2019.08.168] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/17/2019] [Accepted: 08/22/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate if the implementation of white matter (WM) fiber tractography by diffusion tensor imaging in presurgical planning for supratentorial tumors proximal to eloquent WM tracts can alter a neurosurgeon's operative strategy. METHODS A retrospective review was conducted of patients with supratentorial brain tumors within eloquent WM tracts who underwent diffusion tensor imaging (DTI) tractography as part of their preoperative assessment. These patients were classified into 3 different DTI groups per the radiology reports: group 1, intact WM tracts; group 2, deviated and/or displaced WM bundles; and group 3, patients with an established WM injury (interrupted and/or destroyed tracts). A blinded prospective behavioral study followed, in which 4 neurosurgeons reviewed the preoperative images at 2 different times (magnetic resonance imaging without DTI, followed by a review of the DTI). They provided estimations about the DTI group of each individual eloquent WM category in every patient, and their planned surgical approach. RESULTS Fifteen patients (mean age, 58.3 years) were included in the study. The neurosurgeons provided a correct DTI group estimation in 53%, 60%, and 57% of the cases that involved motor/sensory pathway tracts, optic tracts, and language tracts, respectively. The neurosurgeons underestimated DTI group 3 in the motor category and in the optic category 75% of the time. DTI did not alter the planned surgical approach. CONCLUSIONS DTI WM tractography helped neurosurgeons to correctly identify patients with interrupted motor and optic pathway tracts so they could be more aggressive with the extent of tumor resection, despite its inability to alter the operative approach.
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Affiliation(s)
- Georgios Alexopoulos
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA.
| | - Ulas Cikla
- Department of Neurosurgery, Yale-New Haven Hospital, New Haven, Connecticut, USA
| | - Najib El Tecle
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Neha Kulkarni
- School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Matthew Pierson
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Philippe Mercier
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Joanna Kemp
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Jeroen Coppens
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Shamseldeen Mahmoud
- Department of Radiology, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Mehrdad Sehi
- Department of Radiology, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Richard Bucholz
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
| | - Saleem Abdulrauf
- Department of Neurosurgery, Saint Louis University Hospital, St. Louis, Missouri, USA; School of Medicine, Saint Louis University Hospital, St. Louis, Missouri, USA
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Camarda C, Torelli P, Pipia C, Battaglini I, Azzarello D, Rosano R, Ventimiglia CC, Sottile G, Cilluffo G, Camarda R. Mild Parkinsonian Signs in a Hospital-based Cohort of Mild Cognitive Impairment Types: A Cross-sectional Study. Curr Alzheimer Res 2019; 16:633-649. [DOI: 10.2174/1567205016666190726100744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 04/24/2019] [Accepted: 06/17/2019] [Indexed: 12/27/2022]
Abstract
Background:Mild Parkinsonian Signs (MPS) have been associated with Mild Cognitive Impairment (MCI) types with conflicting results.Objective:To investigate the association of individual MPS with different MCI types using logistic ridge regression analysis, and to evaluate for each MCI type, the association of MPS with caudate atrophy, global cerebral atrophy, and the topographical location of White Matter Hyperintensities (WMH), and lacunes.Methods:A cross-sectional study was performed among 1,168 subjects with different types of MCI aged 45-97 (70,52 ± 9,41) years, who underwent brain MRI. WMH were assessed through two visual rating scales. The number and location of lacunes were also rated. Atrophy of the caudate nuclei and global cerebral atrophy were assessed through the bicaudate ratio, and the lateral ventricles to brain ratio, respectively. Apolipoprotein E (APOE) genotypes were also assessed. Using the items of the motor section of the Unified Parkinson’s Disease Rating Scale, tremor, rigidity, bradykinesia, and gait/balance/axial dysfunction were evaluated.Results:Bradykinesia, and gait/balance/axial dysfunction were the MPS more frequently encountered followed by rigidity, and tremor. MPS were present in both amnestic and non-amnestic MCI types, and were associated with WMH, lacunes, bicaudate ratio, and lateral ventricles to brain ratio.Conclusion:MPS are present in both amnestic and non-amnestic MCI types, particularly in those multiple domain, and carrying the APOE ε4 allele. Cortical and subcortical vascular and atrophic processes contribute to MPS. Long prospective studies are needed to disentangle the contribution of MPS to the conversion from MCI to dementia.
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Affiliation(s)
- Cecilia Camarda
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
| | - Paola Torelli
- Department of Clinical and Experimental Medicine, University of Parma, Parma, Italy
| | | | - Iacopo Battaglini
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
| | - Delia Azzarello
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
| | - Rosamaria Rosano
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
| | | | - Gianluca Sottile
- Department of Economics, Business, and Statistics Sciences, University of Palermo, Palermo, Italy
| | - Giovanna Cilluffo
- Institute of Biomedicine and Molecular Immunology, National Research Council, Palermo, Italy
| | - Rosolino Camarda
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
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140
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Cox S, Ritchie S, Fawns-Ritchie C, Tucker-Drob E, Deary I. Structural brain imaging correlates of general intelligence in UK Biobank. INTELLIGENCE 2019; 76:101376. [PMID: 31787788 PMCID: PMC6876667 DOI: 10.1016/j.intell.2019.101376] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/21/2019] [Indexed: 02/06/2023]
Abstract
The associations between indices of brain structure and measured intelligence are unclear. This is partly because the evidence to-date comes from mostly small and heterogeneous studies. Here, we report brain structure-intelligence associations on a large sample from the UK Biobank study. The overall N = 29,004, with N = 18,426 participants providing both brain MRI and at least one cognitive test, and a complete four-test battery with MRI data available in a minimum N = 7201, depending upon the MRI measure. Participants' age range was 44-81 years (M = 63.13, SD = 7.48). A general factor of intelligence (g) was derived from four varied cognitive tests, accounting for one third of the variance in the cognitive test scores. The association between (age- and sex- corrected) total brain volume and a latent factor of general intelligence is r = 0.276, 95% C.I. = [0.252, 0.300]. A model that incorporated multiple global measures of grey and white matter macro- and microstructure accounted for more than double the g variance in older participants compared to those in middle-age (13.6% and 5. 4%, respectively). There were no sex differences in the magnitude of associations between g and total brain volume or other global aspects of brain structure. The largest brain regional correlates of g were volumes of the insula, frontal, anterior/superior and medial temporal, posterior and paracingulate, lateral occipital cortices, thalamic volume, and the white matter microstructure of thalamic and association fibres, and of the forceps minor. Many of these regions exhibited unique contributions to intelligence, and showed highly stable out of sample prediction.
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Affiliation(s)
- S.R. Cox
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, UK
- Department of Psychology, The University of Edinburgh, UK
- Scottish Imaging Network, A Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK
| | - S.J. Ritchie
- Social, Genetic and Developmental Psychiatry Centre, King's College London, London, UK
| | - C. Fawns-Ritchie
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, UK
- Department of Psychology, The University of Edinburgh, UK
| | | | - I.J. Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, UK
- Department of Psychology, The University of Edinburgh, UK
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Gaudio S, Carducci F, Piervincenzi C, Olivo G, Schiöth HB. Altered thalamo–cortical and occipital–parietal– temporal–frontal white matter connections in patients with anorexia and bulimia nervosa: a systematic review of diffusion tensor imaging studies. J Psychiatry Neurosci 2019; 44:324-339. [PMID: 30994310 PMCID: PMC6710091 DOI: 10.1503/jpn.180121] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Anorexia nervosa and bulimia nervosa are complex mental disorders, and their etiology is still not fully understood. This paper reviews the literature on diffusion tensor imaging studies in patients with anorexia nervosa and bulimia nervosa to explore the usefulness of white matter microstructural analysis in understanding the pathophysiology of eating disorders. METHODS We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines to identify diffusion tensor imaging studies that compared patients with an eating disorder to control groups. We searched relevant databases for studies published from database inception to August 2018, using combinations of select keywords. We categorized white matter tracts according to their 3 main classes: projection (i.e., thalamo–cortical), association (i.e., occipital–parietal–temporal–frontal) and commissural (e.g., corpus callosum). RESULTS We included 19 papers that investigated a total of 427 participants with current or previous eating disorders and 444 controls. Overall, the studies used different diffusion tensor imaging approaches and showed widespread white matter abnormalities in patients with eating disorders. Despite differences among the studies, patients with anorexia nervosa showed mainly white matter microstructural abnormalities of thalamo–cortical tracts (i.e., corona radiata, thalamic radiations) and occipital–parietal–temporal–frontal tracts (i.e., left superior longitudinal and inferior fronto-occipital fasciculi). It was less clear whether white matter alterations persist after recovery from anorexia nervosa. Available data on bulimia nervosa were partially similar to those for anorexia nervosa. LIMITATIONS Study sample composition and diffusion tensor imaging analysis techniques were heterogeneous. The number of studies on bulimia nervosa was too limited to be conclusive. CONCLUSION White matter microstructure appears to be affected in anorexia nervosa, and these alterations may play a role in the pathophysiology of this eating disorder. Although we found white matter alterations in bulimia nervosa that were similar to those in anorexia nervosa, white matter changes in bulimia nervosa remain poorly investigated, and these findings were less conclusive. Further studies with longitudinal designs and multi-approach analyses are needed to better understand the role of white matter changes in eating disorders.
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Affiliation(s)
- Santino Gaudio
- From the Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden (Gaudio, Olivo, Schiöth); the Centre for Integrated Research, Area of Diagnostic Imaging, Universita Campus Bio-Medico di Roma, Rome, Italy (Gaudio); the Department of Physiology and Pharmacology, Neuroimaging Laboratory, Sapienza University, Rome, Italy (Carducci, Piervincenzi); and the Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia (Schiöth)
| | - Filippo Carducci
- From the Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden (Gaudio, Olivo, Schiöth); the Centre for Integrated Research, Area of Diagnostic Imaging, Universita Campus Bio-Medico di Roma, Rome, Italy (Gaudio); the Department of Physiology and Pharmacology, Neuroimaging Laboratory, Sapienza University, Rome, Italy (Carducci, Piervincenzi); and the Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia (Schiöth)
| | - Claudia Piervincenzi
- From the Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden (Gaudio, Olivo, Schiöth); the Centre for Integrated Research, Area of Diagnostic Imaging, Universita Campus Bio-Medico di Roma, Rome, Italy (Gaudio); the Department of Physiology and Pharmacology, Neuroimaging Laboratory, Sapienza University, Rome, Italy (Carducci, Piervincenzi); and the Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia (Schiöth)
| | - Gaia Olivo
- From the Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden (Gaudio, Olivo, Schiöth); the Centre for Integrated Research, Area of Diagnostic Imaging, Universita Campus Bio-Medico di Roma, Rome, Italy (Gaudio); the Department of Physiology and Pharmacology, Neuroimaging Laboratory, Sapienza University, Rome, Italy (Carducci, Piervincenzi); and the Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia (Schiöth)
| | - Helgi B. Schiöth
- From the Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden (Gaudio, Olivo, Schiöth); the Centre for Integrated Research, Area of Diagnostic Imaging, Universita Campus Bio-Medico di Roma, Rome, Italy (Gaudio); the Department of Physiology and Pharmacology, Neuroimaging Laboratory, Sapienza University, Rome, Italy (Carducci, Piervincenzi); and the Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia (Schiöth)
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Associative white matter connecting the dorsal and ventral posterior human cortex. Brain Struct Funct 2019; 224:2631-2660. [DOI: 10.1007/s00429-019-01907-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 06/07/2019] [Indexed: 02/05/2023]
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143
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White matter asymmetries in human situs inversus totalis. Brain Struct Funct 2019; 224:2559-2565. [DOI: 10.1007/s00429-019-01904-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 06/06/2019] [Indexed: 12/15/2022]
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Ordóñez-Rubiano EG, Valderrama-Arias FA, Forbes JA, Johnson JM, Younus I, Marín-Muñoz JH, Sánchez-Montaño M, Angulo DA, Cifuentes-Lobelo HA, Cortes-Lozano W, Pedraza-Ciro MC, Bello-Dávila ML, Patiño-Gómez JG, Ordóñez-Mora EG. Identification of Preoperative Language Tracts for Intrinsic Frontotemporal Diseases: A Pilot Reconstruction Algorithm in a Middle-Income Country. World Neurosurg 2019; 125:e729-e742. [DOI: 10.1016/j.wneu.2019.01.163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 01/14/2019] [Accepted: 01/18/2019] [Indexed: 11/29/2022]
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145
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Shah A, Goel A, Jhawar SS, Patil A, Rangnekar R, Goel A. Neural Circuitry: Architecture and Function—A Fiber Dissection Study. World Neurosurg 2019; 125:e620-e638. [DOI: 10.1016/j.wneu.2019.01.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 11/29/2022]
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146
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Bernard F, Zemmoura I, Ter Minassian A, Lemée JM, Menei P. Anatomical variability of the arcuate fasciculus: a systematical review. Surg Radiol Anat 2019; 41:889-900. [PMID: 31028450 DOI: 10.1007/s00276-019-02244-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 04/17/2019] [Indexed: 11/30/2022]
Abstract
PURPOSE The arcuate fasciculus (AF) is a white matter fibers tract that links the lateral temporal with the frontal cortex. The AF can be divided into three components: two superficial indirect short tracts (anterior and posterior) and one deep direct long tract. Both DTI and white matter dissections studies find differences regarding the anatomy of the AF, especially its cortical connections. This paper aims at providing a comprehensive anatomical classification of the AF, using the terminologia anatomica. METHODS Articles (n = 478) were obtained from a systematical PRISMA review. Studies which focused on primates, unhealthy subjects, as well as studies without cortical termination description and review articles were excluded from the analysis. One hundred and ten articles were retained for full-text examination, of which 19 finally fulfilled our criteria to be included in this review. RESULTS We classified main descriptions and variations of each segment of the AF according to fiber orientation and cortical connections. Three types of connections were depicted for each segment of the AF. Concerning the anterior segment, most of the frontal fibers (59.35%) ran from the ventral portion of the precentral gyrus and the posterior part of the pars opercularis, to the supramarginal gyrus (85.0%). Main fibers of the posterior segment of the AF ran from the posterior portion of the middle temporal gyrus (100%) to the angular gyrus (92.0%). In main descriptions of the long segment of the AF, fibers ran from both the ventral portion of the precentral gyrus and posterior part of the pars opercularis (63.9%) to the middle and inferior temporal gyrus (60.3%). Minor subtypes were described in detail in the article. CONCLUSION We provide a comprehensive classification of the anatomy of the AF, regarding the orientation and cortical connections of its fibers. Although fiber orientation is very consistent, cortical endings of the AF may be different from one study to another, or from one individual to another which is a key element to understand the anatomical basis of current models of language or to guide intraoperative stimulation during awake surgery.
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Affiliation(s)
- Florian Bernard
- , Department of Neurosurgery, Teaching Hospital, 49100, Angers, France. .,Laboratory of Anatomy, Medical Faculty, 28 rue Roger Amsler, 49100, Angers, France.
| | - Ilyess Zemmoura
- Department of Neurosurgery, CHRU de Tours, Tours, France.,UMR1253, iBrain, Université de Tours, Inserm, Tours, France
| | - Aram Ter Minassian
- Department of Reanimation, Teaching Hospital, 49100, Angers, France.,INSERM, 1066 Department and EA7315 Team, Angers, France
| | - Jean-Michel Lemée
- , Department of Neurosurgery, Teaching Hospital, 49100, Angers, France.,CRCINA, UMR 1232 INSERM/CNRS and EA7315 Team, Angers, France
| | - Philippe Menei
- , Department of Neurosurgery, Teaching Hospital, 49100, Angers, France.,CRCINA, UMR 1232 INSERM/CNRS and EA7315 Team, Angers, France
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147
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Tan SYZ, Keong NCH, Selvan RMP, Li H, Ooi LQR, Tan EK, Chan LL. Periventricular White Matter Abnormalities on Diffusion Tensor Imaging of Postural Instability Gait Disorder Parkinsonism. AJNR Am J Neuroradiol 2019; 40:609-613. [PMID: 30872421 DOI: 10.3174/ajnr.a5993] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/18/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND AND PURPOSE Postural instability gait disorder is a motor subtype of Parkinson disease associated with predominant gait dysfunction. We investigated the periventricular white matter comprising longitudinal, thalamic, and callosal fibers using diffusion tensor MR Imaging and examined clinical correlates in a cohort of patients with Parkinson disease and postural instability gait disorder and healthy controls. MATERIALS AND METHODS All subjects underwent the Tinetti Gait and Balance Assessment and brain MR imaging. The DTI indices (fractional anisotropy, mean diffusivity, axial diffusivity, and radial diffusivity) from ROIs dropped over the superior and inferior longitudinal fasciculi, inferior fronto-occipital fasciculus, anterior thalamic radiation, anterior and posterior limbs of the internal capsule, and the genu and body of corpus callosum were evaluated. RESULTS Our findings showed that the superior longitudinal fasciculus, inferior longitudinal fasciculus, inferior fronto-occipital fasciculus, anterior thalamic radiation, genu of the corpus callosum, and body of the corpus callosum are more affected in postural instability gait disorder than in those with Parkinson disease or healthy controls, with more group differences among the longitudinal fibers. Only the callosal fibers differentiated the postural instability gait disorder and Parkinson disease groups. DTI measures in the superior longitudinal fasciculus, frontostriatal fibers (anterior thalamic radiation, anterior limb of the internal capsule), and genu of the corpus callosum fibers correlated with clinical gait severity. CONCLUSIONS Findings from this case-control cohort lend further evidence to the role of extranigral pathology and, specifically, the periventricular fibers in the pathophysiology of postural instability gait disorder.
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Affiliation(s)
- S Y Z Tan
- From the Department of Diagnostic Radiology, Singapore General Hospital, Singhealth (S.Y.Z.T., N.C.H.K., H.L., E.K.T., L.L.C.), Singapore
| | - N C H Keong
- From the Department of Diagnostic Radiology, Singapore General Hospital, Singhealth (S.Y.Z.T., N.C.H.K., H.L., E.K.T., L.L.C.), Singapore
- Departments of Neurosurgery, Research and Neurology, National Neuroscience Institute, Singhealth (N.C.H.K., R.M.P.S., L.Q.R.O., E.K.T.), Singapore
- Duke-NUS Medical School (N.C.H.K., E.K.T., L.L.C.), Singapore
| | - R M P Selvan
- Departments of Neurosurgery, Research and Neurology, National Neuroscience Institute, Singhealth (N.C.H.K., R.M.P.S., L.Q.R.O., E.K.T.), Singapore
| | - H Li
- From the Department of Diagnostic Radiology, Singapore General Hospital, Singhealth (S.Y.Z.T., N.C.H.K., H.L., E.K.T., L.L.C.), Singapore
| | - L Q R Ooi
- Departments of Neurosurgery, Research and Neurology, National Neuroscience Institute, Singhealth (N.C.H.K., R.M.P.S., L.Q.R.O., E.K.T.), Singapore
| | - E K Tan
- From the Department of Diagnostic Radiology, Singapore General Hospital, Singhealth (S.Y.Z.T., N.C.H.K., H.L., E.K.T., L.L.C.), Singapore
- Departments of Neurosurgery, Research and Neurology, National Neuroscience Institute, Singhealth (N.C.H.K., R.M.P.S., L.Q.R.O., E.K.T.), Singapore
- Duke-NUS Medical School (N.C.H.K., E.K.T., L.L.C.), Singapore
| | - L L Chan
- From the Department of Diagnostic Radiology, Singapore General Hospital, Singhealth (S.Y.Z.T., N.C.H.K., H.L., E.K.T., L.L.C.), Singapore
- Duke-NUS Medical School (N.C.H.K., E.K.T., L.L.C.), Singapore
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148
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David S, Heemskerk AM, Corrivetti F, Thiebaut de Schotten M, Sarubbo S, Corsini F, De Benedictis A, Petit L, Viergever MA, Jones DK, Mandonnet E, Axer H, Evans J, Paus T, Leemans A. The Superoanterior Fasciculus (SAF): A Novel White Matter Pathway in the Human Brain? Front Neuroanat 2019; 13:24. [PMID: 30890921 PMCID: PMC6412356 DOI: 10.3389/fnana.2019.00024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/07/2019] [Indexed: 01/01/2023] Open
Abstract
Fiber tractography (FT) using diffusion magnetic resonance imaging (dMRI) is widely used for investigating microstructural properties of white matter (WM) fiber-bundles and for mapping structural connections of the human brain. While studying the architectural configuration of the brain's circuitry with FT is not without controversy, recent progress in acquisition, processing, modeling, analysis, and visualization of dMRI data pushes forward the reliability in reconstructing WM pathways. Despite being aware of the well-known pitfalls in analyzing dMRI data and several other limitations of FT discussed in recent literature, we present the superoanterior fasciculus (SAF), a novel bilateral fiber tract in the frontal region of the human brain that-to the best of our knowledge-has not been documented. The SAF has a similar shape to the anterior part of the cingulum bundle, but it is located more frontally. To minimize the possibility that these FT findings are based on acquisition or processing artifacts, different dMRI data sets and processing pipelines have been used to describe the SAF. Furthermore, we evaluated the configuration of the SAF with complementary methods, such as polarized light imaging (PLI) and human brain dissections. The FT results of the SAF demonstrate a long pathway, consistent across individuals, while the human dissections indicate fiber pathways connecting the postero-dorsal with the antero-dorsal cortices of the frontal lobe.
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Affiliation(s)
- Szabolcs David
- Image Sciences Institute, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | - Anneriet M. Heemskerk
- Image Sciences Institute, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | | | | | - Silvio Sarubbo
- Structural and Functional Connectivity Lab Project, Department of Emergency, Division of Neurosurgery, “S. Chiara” Hospital, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Francesco Corsini
- Structural and Functional Connectivity Lab Project, Department of Emergency, Division of Neurosurgery, “S. Chiara” Hospital, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Alessandro De Benedictis
- Department of Neurosciences, Division of Neurosurgery, “Bambino Gesù” Children Hospital, IRCCS, Rome, Italy
| | - Laurent Petit
- Groupe d’Imagerie Neurofonctionnelle (GIN), Institut des Maladies Neurodégératives (IMN)-UMR5293-CNRS, CEA, Université de Bordeaux, Bordeaux, France
| | - Max A. Viergever
- Image Sciences Institute, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | - Derek K. Jones
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff, United Kingdom
| | | | - Hubertus Axer
- Hans Berger Department of Neurology, Jena University Hospital, Friedrich-Schiller University Jena, Jena, Germany
| | - John Evans
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff, United Kingdom
| | - Tomáš Paus
- Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Toronto, ON, Canada
- Departments of Psychology and Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Alexander Leemans
- Image Sciences Institute, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
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149
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Liu S, Wang H, Song M, Lv L, Cui Y, Liu Y, Fan L, Zuo N, Xu K, Du Y, Yu Q, Luo N, Qi S, Yang J, Xie S, Li J, Chen J, Chen Y, Wang H, Guo H, Wan P, Yang Y, Li P, Lu L, Yan H, Yan J, Wang H, Zhang H, Zhang D, Calhoun VD, Jiang T, Sui J. Linked 4-Way Multimodal Brain Differences in Schizophrenia in a Large Chinese Han Population. Schizophr Bull 2019; 45:436-449. [PMID: 29897555 PMCID: PMC6403093 DOI: 10.1093/schbul/sby045] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Multimodal fusion has been regarded as a promising tool to discover covarying patterns of multiple imaging types impaired in brain diseases, such as schizophrenia (SZ). In this article, we aim to investigate the covarying abnormalities underlying SZ in a large Chinese Han population (307 SZs, 298 healthy controls [HCs]). Four types of magnetic resonance imaging (MRI) features, including regional homogeneity (ReHo) from resting-state functional MRI, gray matter volume (GM) from structural MRI, fractional anisotropy (FA) from diffusion MRI, and functional network connectivity (FNC) resulted from group independent component analysis, were jointly analyzed by a data-driven multivariate fusion method. Results suggest that a widely distributed network disruption appears in SZ patients, with synchronous changes in both functional and structural regions, especially the basal ganglia network, salience network (SAN), and the frontoparietal network. Such a multimodal coalteration was also replicated in another independent Chinese sample (40 SZs, 66 HCs). Our results on auditory verbal hallucination (AVH) also provide evidence for the hypothesis that prefrontal hypoactivation and temporal hyperactivation in SZ may lead to failure of executive control and inhibition, which is relevant to AVH. In addition, impaired working memory performance was found associated with GM reduction and FA decrease in SZ in prefrontal and superior temporal area, in both discovery and replication datasets. In summary, by leveraging multiple imaging and clinical information into one framework to observe brain in multiple views, we can integrate multiple inferences about SZ from large-scale population and offer unique perspectives regarding the missing links between the brain function and structure that may not be achieved by separate unimodal analyses.
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Affiliation(s)
- Shengfeng Liu
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China,School of Automation, Harbin University of Science and Technology, Harbin, China,University of Chinese Academy of Sciences, Beijing, China,National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, Shenzhen, China
| | - Haiying Wang
- School of Automation, Harbin University of Science and Technology, Harbin, China
| | - Ming Song
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Luxian Lv
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China
| | - Yue Cui
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Yong Liu
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Lingzhong Fan
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Nianming Zuo
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Kaibin Xu
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Yuhui Du
- The Mind Research Network, Albuquerque, NM,School of Computer and Information Technology, Shanxi University, Taiyuan, China
| | - Qingbao Yu
- The Mind Research Network, Albuquerque, NM
| | - Na Luo
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences, Beijing, China
| | - Shile Qi
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences, Beijing, China
| | - Jian Yang
- Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Electronics, Beijing Institute of Technology, Beijing, China
| | - Sangma Xie
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Jian Li
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Jun Chen
- Department of Radiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yunchun Chen
- Department of Psychiatry, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Huaning Wang
- Department of Psychiatry, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Hua Guo
- Zhumadian Psychiatric Hospital, Zhumadian, China
| | - Ping Wan
- Zhumadian Psychiatric Hospital, Zhumadian, China
| | - Yongfeng Yang
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China,Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Peng Li
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Lin Lu
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China,Queensland Brain Institute, University of Queensland, Brisbane, Australia
| | - Hao Yan
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Jun Yan
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Huiling Wang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hongxing Zhang
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China,Department of Psychology, Xinxiang Medical University, Xinxiang, China
| | - Dai Zhang
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China,Center for Life Sciences/PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Vince D Calhoun
- The Mind Research Network, Albuquerque, NM,Department of Electrical and Computer Engineering, The University of New Mexico, Albuquerque, NM
| | - Tianzi Jiang
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences, Beijing, China,Queensland Brain Institute, University of Queensland, Brisbane, Australia,CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Jing Sui
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences, Beijing, China,The Mind Research Network, Albuquerque, NM,CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Automation, Chinese Academy of Sciences, Beijing, China,To whom correspondence should be addressed; Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China; tel: +86-10-8254-4518; fax: +86-10-8254-4777; e-mail:
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150
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Acupuncture Enhances Communication between Cortices with Damaged White Matters in Poststroke Motor Impairment. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:4245753. [PMID: 30719060 PMCID: PMC6334314 DOI: 10.1155/2019/4245753] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/30/2018] [Accepted: 12/06/2018] [Indexed: 11/17/2022]
Abstract
Stroke is a leading cause of motor disability. Acupuncture is an effective therapeutic strategy for poststroke motor impairment. However, its mechanism is still elusive. Twenty-two stroke patients having a right-hemispheric subcortical infarct and 22 matched healthy controls were recruited to undergo diffusion tensor imaging (DTI) and functional magnetic resonance imaging (fMRI) scanning. The resting-state fMRI was implemented before and after needling at GB34 (Yanglingquan). The stroke patients presented a substantially reduced fractional anisotropy value in the right superior longitudinal fasciculus (SLF), corticospinal tract, and corpus callosum. The structural integrity of the frontoparietal part of the SLF (SLF-FP) correlated with the motor scores of lower limbs in stroke patients. This corticocortical association bundle originated from the premotor cortex (PM) and the adjacent supplementary motor area (SMA), known as secondary motor areas, and terminated in the supramarginal gyrus (SMG). After acupuncture intervention, the corresponding functional connectivity between the PM/SMA and SMG was enhanced in stroke patients compared with healthy controls. These findings suggested that the integrity of the SLF is a potential neuroimaging biomarker for motor disability of lower limbs following a stroke. Acupuncture could increase the communication between the cortices connected by the impaired white matter tracts, implying the neural mechanism underlying the acupuncture intervention.
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