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Pur DR, Preti MG, de Ribaupierre A, Van De Ville D, Eagleson R, Mella N, de Ribaupierre S. Mapping of Structure-Function Age-Related Connectivity Changes on Cognition Using Multimodal MRI. Front Aging Neurosci 2022; 14:757861. [PMID: 35663581 PMCID: PMC9158434 DOI: 10.3389/fnagi.2022.757861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 04/21/2022] [Indexed: 11/13/2022] Open
Abstract
The relationship between age-related changes in brain structural connectivity (SC) and functional connectivity (FC) with cognition is not well understood. Furthermore, it is not clear whether cognition is represented via a similar spatial pattern of FC and SC or instead is mapped by distinct sets of distributed connectivity patterns. To this end, we used a longitudinal, within-subject, multimodal approach aiming to combine brain data from diffusion-weighted MRI (DW-MRI), and functional MRI (fMRI) with behavioral evaluation, to better understand how changes in FC and SC correlate with changes in cognition in a sample of older adults. FC and SC measures were derived from the multimodal scans acquired at two time points. Change in FC and SC was correlated with 13 behavioral measures of cognitive function using Partial Least Squares Correlation (PLSC). Two of the measures indicate an age-related change in cognition and the rest indicate baseline cognitive performance. FC and SC—cognition correlations were expressed across several cognitive measures, and numerous structural and functional cortical connections, mainly cingulo-opercular, dorsolateral prefrontal, somatosensory and motor, and temporo-parieto-occipital, contributed both positively and negatively to the brain-behavior relationship. Whole-brain FC and SC captured distinct and independent connections related to the cognitive measures. Overall, we examined age-related function-structure associations of the brain in a comprehensive and integrated manner, using a multimodal approach. We pointed out the behavioral relevance of age-related changes in FC and SC. Taken together, our results highlight that the heterogeneity in distributed FC and SC connectivity patterns provide unique information about the variable nature of healthy cognitive aging.
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Affiliation(s)
- Daiana Roxana Pur
- Schulich School of Medicine & Dentistry, Western University, London, ON, Canada
- *Correspondence: Daiana Roxana Pur
| | - Maria Giulia Preti
- CIBM Center for Biomedical Imaging, Lausanne, Switzerland
- Institute of Bioengineering, Center for Neuroprosthetics, EPFL, Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva (UNIGE), Geneva, Switzerland
| | | | - Dimitri Van De Ville
- CIBM Center for Biomedical Imaging, Lausanne, Switzerland
- Institute of Bioengineering, Center for Neuroprosthetics, EPFL, Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva (UNIGE), Geneva, Switzerland
| | - Roy Eagleson
- Department of Electrical and Computer Engineering, Western University, London, ON, Canada
- The Brain and Mind Institute, Western University, London, ON, Canada
| | - Nathalie Mella
- Department of Psychology, University of Geneva, Geneva, Switzerland
| | - Sandrine de Ribaupierre
- Schulich School of Medicine & Dentistry, Western University, London, ON, Canada
- The Brain and Mind Institute, Western University, London, ON, Canada
- Department of Clinical Neurological Sciences, Schulich School of Medicine, Western University, London, ON, Canada
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Hammen T, Reisert M, Juschkat W, Egger K, Urbach H, Zentner J, Beck J, Hamer H, Steinhoff BJ, Baumgartner C, Schulze-Bonhage A, Puhahn-Schmeiser B. Alterations of intracerebral connectivity in epilepsy patients with secondary bilateral synchrony. Epilepsy Res 2020; 166:106402. [PMID: 32673968 DOI: 10.1016/j.eplepsyres.2020.106402] [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: 02/09/2020] [Revised: 05/19/2020] [Accepted: 06/20/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION The aim of our study was to evaluate intracerebral network changes in epilepsy patients demonstrating secondary bilateral synchrony (SBS) in EEG by applying a new Diffusion Tensor Imaging (DTI) method using an energy-based global tracking algorithm. MATERIALS AND METHODS 10 MRI negative epilepsy patients demonstrating SBS in 10-20 surface EEG were included. EEG findings were analyzed for irritative zones characterized by focal interictal epileptiform discharges (IEDs) triggering SBS. In addition, DTI including an energy-based global tracking algorithm was applied to analyze fiber tract alterations in irritative zones. To measure the deviation of a certain cortical connection in comparison to healthy controls, normalized differences of fiber tract streamline counts (SC) and their p-values were evaluated in comparison to corresponding fibers of the control group. RESULTS In 6 patients the irritative zone initiating SBS was located in the frontal lobe, in 3 patients in the temporal lobe and in 1 patient in the region surrounding the right central sulcus. All patients demonstrated significantly altered SC in brain lobes where the irritative zone triggering SBS was located (p ≤ 0.05). Seven out of 10 patients demonstrated SC alterations in tracts connecting brain lobes between the ipsilateral and the contralateral hemisphere (p ≤ 0.05). CONCLUSION Our data demonstrate that alterations in fiber tracts in irritative zones triggering SBS are not necessarily associated with intracerebral lesions visible in high resolution MRI. Our study gives evidence that diffusion tensor imaging is a promising non-invasive additive tool for intracerebral network analyses even in MRI-negative epilepsy patients.
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Affiliation(s)
- T Hammen
- Department of Epileptology, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany; Clinic of Neurology, Westpfalz Klinikum Kaiserslautern, Hellmut-Hartert-Straße 1, 67655 Kaiserslautern, Germany
| | - M Reisert
- Medical Physics, Department of Radiology, University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - W Juschkat
- Department of Epileptology, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany
| | - K Egger
- Department of Neuroradiology, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany
| | - H Urbach
- Department of Neuroradiology, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany
| | - J Zentner
- Department of Neurosurgery, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany
| | - J Beck
- Department of Neurosurgery, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany
| | - H Hamer
- Epilepsy Center, Department of Neurology, University of Erlangen, Schwabachanlage 6, 91054 Erlangen, Germany
| | - B J Steinhoff
- Epilepsy Center Kork, Landstrasse 1, 77694 Kehl, Germany
| | - C Baumgartner
- Neurological Center Rosenhügel & Karl Landsteiner Institute for Clinical Epilepsy Research and Cognitive Neurology, Riedelgasse 5, 1130 Vienna, Austria; Medical Faculty, Sigmund Freud Private University, Vienna, Austria
| | - A Schulze-Bonhage
- Department of Epileptology, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany
| | - B Puhahn-Schmeiser
- Department of Neurosurgery, Medical Center, University of Freiburg, Faculty of Medicine, Breisacher Strasse 64, 79106 Freiburg, Germany.
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Masuda F, Nakajima S, Miyazaki T, Tarumi R, Ogyu K, Wada M, Tsugawa S, Croarkin PE, Mimura M, Noda Y. Clinical effectiveness of repetitive transcranial magnetic stimulation treatment in children and adolescents with neurodevelopmental disorders: A systematic review. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2019; 23:1614-1629. [PMID: 30663323 DOI: 10.1177/1362361318822502] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Neurodevelopmental disorders, including autism spectrum disorder, are common in children and adolescents, but treatment strategies remain limited. Although repetitive transcranial magnetic stimulation has been studied for neurodevelopmental disorders, there is no clear consensus on its therapeutic effects. This systematic review examined literature on repetitive transcranial magnetic stimulation for children and adolescents with neurodevelopmental disorders published up to 2018 using the PubMed database. The search identified 264 articles and 14 articles met eligibility criteria. Twelve of these studies used conventional repetitive transcranial magnetic stimulation and two studies used theta burst stimulation. No severe adverse effects were reported in these studies. In patients with autism spectrum disorder, low-frequency repetitive transcranial magnetic stimulation and intermittent theta burst stimulation applied to the dorsolateral prefrontal cortex may have therapeutic effects on social functioning and repetitive behaviors. In patients with attention deficit/hyperactivity disorder, low-frequency repetitive transcranial magnetic stimulation applied to the left dorsolateral prefrontal cortex and high-frequency repetitive transcranial magnetic stimulation applied to the right dorsolateral prefrontal cortex may target inattention, hyperactivity, and impulsivity. In patients with tic disorders, low-frequency repetitive transcranial magnetic stimulation applied to the bilateral supplementary motor area improved tic symptom severity. This systematic review suggests that repetitive transcranial magnetic stimulation may be a promising intervention for children and adolescents with neurodevelopmental disorders. The results warrant further large randomized controlled trials of repetitive transcranial magnetic stimulation in children with neurodevelopmental disorders.
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Affiliation(s)
- Fumi Masuda
- 1 Keio University School of Medicine, Japan.,2 Shiga University of Medical Science, Japan
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4
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Schumacher LV, Reisert M, Nitschke K, Egger K, Urbach H, Hennig J, Weiller C, Kaller CP. Data on the test-retest reproducibility of streamline counts as a measure of structural connectivity. Data Brief 2018; 19:1361-1381. [PMID: 30229011 PMCID: PMC6140827 DOI: 10.1016/j.dib.2018.05.145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 05/22/2018] [Accepted: 05/31/2018] [Indexed: 11/30/2022] Open
Abstract
These data provide estimations of test-retest reproducibility of streamline counts based on diffusion weighted imaging (DWI) data using a global tractography algorithm in a sample of young healthy adults. Data on descriptive statistics and factorial analyses of within-session and between-session reproducibility in terms of intra-class correlation coefficients for the absolute agreement between measurements are provided. The effect of several exemplary methodological parameters pertaining to different steps along the tractography processing pipeline on reproducibility are considered. These data are related to the research article entitled ‘Probing the reproducibility of quantitative estimates of structural connectivity derived from global tractography’ (Schumacher et al., Neuroimage, 175 (2018) 215–229).
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Affiliation(s)
- Lena V. Schumacher
- Dept. of Neurology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Medical Psychology and Medical Sociology, Faculty of Medicine, University of Freiburg, Rheinstrasse 12, 79104 Freiburg, Germany
- Dept. of Neuroradiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Freiburg Brain Imaging Center, University of Freiburg, Germany
- BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Germany
- Corresponding authors at: Dept. of Neurology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany.
| | - Marco Reisert
- Freiburg Brain Imaging Center, University of Freiburg, Germany
- BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Germany
- Medical Physics, Dept. of Radiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Kai Nitschke
- Dept. of Neurology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Freiburg Brain Imaging Center, University of Freiburg, Germany
| | - Karl Egger
- Dept. of Neuroradiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Freiburg Brain Imaging Center, University of Freiburg, Germany
| | - Horst Urbach
- Dept. of Neuroradiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Freiburg Brain Imaging Center, University of Freiburg, Germany
| | - Jürgen Hennig
- Freiburg Brain Imaging Center, University of Freiburg, Germany
- BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Germany
- Medical Physics, Dept. of Radiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Cornelius Weiller
- Dept. of Neurology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Freiburg Brain Imaging Center, University of Freiburg, Germany
- BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Germany
| | - Christoph P. Kaller
- Dept. of Neurology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany
- Freiburg Brain Imaging Center, University of Freiburg, Germany
- BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Germany
- Corresponding authors at: Dept. of Neurology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 64, 79106 Freiburg, Germany.
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Lin HC, Wang PW, Wu HC, Ko CH, Yang YH, Yen CF. Altered gray matter volume and disrupted functional connectivity of dorsolateral prefrontal cortex in men with heroin dependence. Psychiatry Clin Neurosci 2018; 72:435-444. [PMID: 29582514 DOI: 10.1111/pcn.12655] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 01/18/2018] [Accepted: 03/21/2018] [Indexed: 12/26/2022]
Abstract
AIM Chronic heroin use can cause various neuropathological characteristics that may compromise brain function. The present study evaluated the alteration of gray matter volume (GMV) and its resting-state functional connectivity (rsFC) over the dorsolateral prefrontal cortex (DLPFC) among male heroin users. METHODS Thirty heroin-dependent men undergoing methadone maintenance therapy and 30 educational-level- and age-matched male controls were recruited for this study. To assess their GMV and rsFC, the participants were evaluated using spoiled gradient echo and gradient-recalled echo planar imaging sequences with a 3-Tesla General Electric MR scanner under resting state. RESULTS The heroin-dependent men showed lower GMV over the right DLPFC in comparison with the controls. Further evaluation of the rsFC of the right DLPFC revealed a marked decrease in interhemispheric DLPFC connectivity among those with heroin dependence under control of head movement and GMV of the right DLPFC. CONCLUSION Although the mechanism remains unclear, the present study shows that chronic heroin use is associated with alteration of morphology as well as rsFC over the right DLPFC. As the DLPFC plays an imperative role in various domains of cognitive function, service providers for heroin users should consider the impacts of possible DLPFC-related cognitive deficits on treatment effectiveness.
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Affiliation(s)
- Huang-Chi Lin
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine and Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Peng-Wei Wang
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine and Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hung-Chi Wu
- Department of Community Psychiatry, Kai-Suan Psychiatric Hospital, Kaohsiung, Taiwan
| | - Chih-Hung Ko
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine and Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Psychiatry, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Hsin Yang
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Medical Statistics and Bioinformatics, Department of Medical Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Fang Yen
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine and Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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6
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Scheller E, Schumacher LV, Peter J, Lahr J, Wehrle J, Kaller CP, Gaser C, Klöppel S. Brain Aging and APOE ε4 Interact to Reveal Potential Neuronal Compensation in Healthy Older Adults. Front Aging Neurosci 2018; 10:74. [PMID: 29615896 PMCID: PMC5869204 DOI: 10.3389/fnagi.2018.00074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/05/2018] [Indexed: 01/10/2023] Open
Abstract
Compensation implies the recruitment of additional neuronal resources to prevent the detrimental effect of age-related neuronal decline on cognition. Recently suggested statistical models comprise behavioral performance, brain activation, and measures related to aging- or disease-specific pathological burden to characterize compensation. Higher chronological age as well as the APOE ε4 allele are risk factors for Alzheimer's disease. A more biological approach to characterize aging compared with chronological age is the brain age gap estimation (BrainAGE), taking into account structural brain characteristics. We utilized this estimate in an fMRI experiment together with APOE variant as measures related to pathological burden and aimed at identifying compensatory regions during working memory (WM) processing in a group of 34 healthy older adults. According to published compensation criteria, better performance along with increased brain activation would indicate successful compensation. We examined the moderating effects of BrainAGE on the relationship between task performance and brain activation in prefrontal cortex, as previous studies suggest predominantly frontal compensatory activation. Then we statistically compared them to the effects of chronological age (CA) tested in a previous study. Moreover, we examined the effects of adding APOE variant as a further moderator. Herewith, we strived to uncover neuronal compensation in healthy older adults at risk for neurodegenerative disease. Higher BrainAGE alone was not associated with an increased recruitment in prefrontal cortex. When adding APOE variant as a second moderator, we found an interaction of BrainAGE and APOE variant, such that ε4 carriers recruited right inferior frontal gyrus with higher BrainAGE to maintain WM performance, thus showing a pattern compatible with successful neuronal compensation. Exploratory analyses yielded similar patterns in left inferior and bilateral middle frontal gyrus. These results contrast those from a previous study, where we found no indication of compensation in prefrontal cortex in ε4 carriers with increasing CA. We conclude that BrainAGE together with APOE variant can help to reveal potential neuronal compensation in healthy older adults. Previous results on neuronal compensation in frontal areas corroborate our findings. Compensatory brain regions could be targeted in affected individuals by training or stimulation protocols to maintain cognitive functioning as long as possible.
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Affiliation(s)
- Elisa Scheller
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany
| | - Lena V Schumacher
- Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany.,Department of Neurology, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.,Medical Psychology and Medical Sociology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jessica Peter
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.,University Hospital of Old Age Psychiatry and Psychotherapy Bern, Bern, Switzerland
| | - Jacob Lahr
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany
| | - Julius Wehrle
- Department of Medicine I, Medical Center-University of Freiburg, Freiburg, Germany.,Berta-Ottenstein-Programme, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,German Cancer Consortium (DKTK), Freiburg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Christoph P Kaller
- Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany.,Department of Neurology, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Christian Gaser
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany.,Department of Neurology, Jena University Hospital, Jena, Germany
| | - Stefan Klöppel
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany.,University Hospital of Old Age Psychiatry and Psychotherapy Bern, Bern, Switzerland
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7
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Probing the reproducibility of quantitative estimates of structural connectivity derived from global tractography. Neuroimage 2018; 175:215-229. [PMID: 29438843 DOI: 10.1016/j.neuroimage.2018.01.086] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 01/12/2018] [Accepted: 01/30/2018] [Indexed: 11/20/2022] Open
Abstract
As quantitative measures derived from fiber tractography are increasingly being used to characterize the structural connectivity of the brain, it is important to establish their reproducibility. However, no such information is as yet available for global tractography. Here we provide the first comprehensive analysis of the reproducibility of streamline counts derived from global tractography as quantitative estimates of structural connectivity. In a sample of healthy young adults scanned twice within one week, within-session and between-session test-retest reproducibility was estimated for streamline counts of connections based on regions of the AAL atlas using the intraclass correlation coefficient (ICC) for absolute agreement. We further evaluated the influence of the type of head-coil (12 versus 32 channels) and the number of reconstruction repetitions (reconstructing streamlines once or aggregated over ten repetitions). Factorial analyses demonstrated that reproducibility was significantly greater for within- than between-session reproducibility and significantly increased by aggregating streamline counts over ten reconstruction repetitions. Using a high-resolution head-coil incurred only small beneficial effects. Overall, ICC values were positively correlated with the streamline count of a connection. Additional analyses assessed the influence of different selection variants (defining fuzzy versus no fuzzy borders of the seed mask; selecting streamlines that end in versus pass through a seed) showing that an endpoint-based variant using fuzzy selection provides the best compromise between reproducibility and anatomical specificity. In sum, aggregating quantitative indices over repeated estimations and higher numbers of streamlines are important determinants of test-retest reproducibility. If these factors are taken into account, streamline counts derived from global tractography provide an adequately reproducible quantitative measure that can be used to gauge the structural connectivity of the brain in health and disease.
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Huang P, Shen Z, Wang C, Qian W, Zhang H, Yang Y, Zhang M. Altered White Matter Integrity in Smokers Is Associated with Smoking Cessation Outcomes. Front Hum Neurosci 2017; 11:438. [PMID: 28912702 PMCID: PMC5582085 DOI: 10.3389/fnhum.2017.00438] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 08/16/2017] [Indexed: 01/03/2023] Open
Abstract
Smoking is a significant cause of preventable mortality worldwide. Understanding the neural mechanisms of nicotine addiction and smoking cessation may provide effective targets for developing treatment strategies. In the present study, we explored whether smokers have white matter alterations and whether these alterations are related to cessation outcomes and smoking behaviors. Sixty-six smokers and thirty-seven healthy non-smokers were enrolled. The participants underwent magnetic resonance imaging scans and smoking-related behavioral assessments. After a 12-week treatment with varenicline, 28 smokers succeeded in quitting smoking and 38 failed. Diffusion parameter maps were compared among the non-smokers, future quitters, and relapsers to identify white matter differences. We found that the future relapsers had significantly lower fractional anisotropy (FA) in the orbitofrontal area than non-smokers, and higher FA in the cerebellum than non-smokers and future quitters. The future quitters had significantly lower FA in the postcentral gyrus compared to non-smokers and future relapsers. Compared to non-smokers, pooled smokers had lower FA in bilateral orbitofrontal gyrus and left superior frontal gyrus. In addition, regression analysis showed that the left orbitofrontal FA was correlated with smoking-relevant behaviors. These results suggest that white matter alterations in smokers may contribute to the formation of aberrant brain circuits underlying smoking behaviors and are associated with future smoking cessation outcomes.
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Affiliation(s)
- Peiyu Huang
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of MedicineHangzhou, China
| | - Zhujing Shen
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of MedicineHangzhou, China
| | - Chao Wang
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of MedicineHangzhou, China
| | - Wei Qian
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of MedicineHangzhou, China
| | - Huan Zhang
- Key Laboratory of Biomedical Engineering of Ministry of Education, Zhejiang UniversityHangzhou, China
| | - Yihong Yang
- Neuroimaging Research Branch, National Institute on Drug Abuse, National Institutes of Health, BaltimoreMD, United States
| | - Minming Zhang
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of MedicineHangzhou, China
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T2* Relaxometry in Patients with Parkinson's Disease : Use of an Automated Atlas-based Approach. Clin Neuroradiol 2016; 28:63-67. [PMID: 27334101 DOI: 10.1007/s00062-016-0523-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 05/14/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Magnetic resonance (MR) relaxometry is of increasing scientific relevance in neurodegenerative disorders but is still not established in clinical routine. Several studies have investigated relaxation time alterations in disease-specific areas in Parkinson's disease (PD), all using manually drawn regions of interest (ROI). Implementing MR relaxometry into the clinical setting involves the reduction of time needed for postprocessing using an investigator-independent and reliable approach. The aim of this study was to evaluate an automated, atlas-based ROI method for evaluating T2* relaxation times in patients with PD. METHOD Automated atlas-based ROI analysis of quantitative T2* maps were generated from 20 PD patients and 20 controls. To test for the accuracy of the atlas-based ROI segmentation, we evaluated the spatial overlap in comparison with manually segmented ROIs using the Dice similarity coefficient (DSC). Additionally, we tested for group differences using our automated atlas-based ROIs of the putamen, globus pallidus, and substantia nigra. RESULTS A good spatial overlap accuracy was shown for the automated segmented putamen (mean DSC, 0.64 ± 0.04) and was inferior but still acceptable for the substantia nigra (mean DSC, 0.50 ± 0.17). Based on our automated defined ROI selection, a significant decrease of T2* relaxation time was found in the putamen as well as in the internal and external globus pallidus in PD patients compared with healthy controls. CONCLUSION Automated digital brain atlas-based approaches are reliable, more objective and time-efficient, and therefore have the potential to replace the time-consuming manual drawing of ROIs.
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10
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Altered Spontaneous Brain Activity in Cortical and Subcortical Regions in Parkinson's Disease. PARKINSONS DISEASE 2016; 2016:5246021. [PMID: 27413576 PMCID: PMC4930823 DOI: 10.1155/2016/5246021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 05/21/2016] [Accepted: 05/22/2016] [Indexed: 01/29/2023]
Abstract
Purpose. The present study aimed to explore the changes of amplitude of low-frequency fluctuations (ALFF) at rest in patients with Parkinson's disease (PD). Methods. Twenty-four PD patients and 22 healthy age-matched controls participated in the study. ALFF was measured on the whole brain of all participants. A two-sample t-test was then performed to detect the group differences with age, gender, education level, head motion, and gray matter volume as covariates. Results. It was showed that PD patients had significantly decreased ALFF in the left thalamus/caudate and right insula/inferior prefrontal gyrus, whereas they had increased ALFF in the right medial prefrontal cortex (BA 8/6) and dorsolateral prefrontal cortex (BA 9/10). Conclusions. Our results indicated that significant alterations of ALFF in the subcortical regions and prefrontal cortex have been detected in PD patients, independent of age, gender, education, head motion, and structural atrophy. The current findings further provide insights into the biological mechanism of the disease.
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Sevel LS, Letzen JE, Staud R, Robinson ME. Interhemispheric Dorsolateral Prefrontal Cortex Connectivity is Associated with Individual Differences in Pain Sensitivity in Healthy Controls. Brain Connect 2016; 6:357-64. [PMID: 26916416 DOI: 10.1089/brain.2015.0405] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The dorsolateral prefrontal cortex (DLPFC) is implicated in pain modulation through multiple psychological processes. Recent noninvasive brain stimulation studies suggest that interhemispheric DLPFC connectivity influences pain tolerance and discomfort by altering interhemispheric inhibition. The structure and role of interhemispheric DLPFC connectivity in pain processing have not been investigated. The present study used dynamic causal modeling (DCM) for fMRI to investigate transcallosal DLPFC connectivity during painful stimulation in healthy volunteers. DCM parameters were used to predict individual differences in sensitivity to noxious heat stimuli. Bayesian model selection results indicated that influences among the right DLPFC (rDLPFC) and left DLPFC (lDLPFC) are modulated during painful stimuli. Regression analyses revealed that greater rDLPFC→lDLPFC couplings were associated with higher suprathreshold pain temperatures. These results highlight the role of interhemispheric connectivity in pain modulation and support the preferential role of the right hemisphere in pain processing. Knowledge of these mechanisms may improve understanding of abnormal pain modulation in chronic pain populations.
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Affiliation(s)
- Landrew S Sevel
- 1 Department of Clinical and Health Psychology, University of Florida , Gainesville, Florida
| | - Janelle E Letzen
- 1 Department of Clinical and Health Psychology, University of Florida , Gainesville, Florida
| | - Roland Staud
- 2 Department of Medicine, University of Florida , Gainesville, Florida
| | - Michael E Robinson
- 1 Department of Clinical and Health Psychology, University of Florida , Gainesville, Florida
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12
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Kaller CP, Debelak R, Köstering L, Egle J, Rahm B, Wild PS, Blettner M, Beutel ME, Unterrainer JM. Assessing Planning Ability Across the Adult Life Span: Population-Representative and Age-Adjusted Reliability Estimates for the Tower of London (TOL-F). Arch Clin Neuropsychol 2015; 31:148-64. [PMID: 26715472 DOI: 10.1093/arclin/acv088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2015] [Indexed: 11/13/2022] Open
Abstract
Planning ahead the consequences of future actions is a prototypical executive function. In clinical and experimental neuropsychology, disc-transfer tasks like the Tower of London (TOL) are commonly used for the assessment of planning ability. Previous psychometric evaluations have, however, yielded a poor reliability of measuring planning performance with the TOL. Based on theory-grounded task analyses and a systematic problem selection, the computerized TOL-Freiburg version (TOL-F) was developed to improve the task's psychometric properties for diagnostic applications. Here, we report reliability estimates for the TOL-F from two large samples collected in Mainz, Germany (n = 3,770; 40-80 years) and in Vienna, Austria (n = 830; 16-84 years). Results show that planning accuracy on the TOL-F possesses an adequate internal consistency and split-half reliability (>0.7) that are stable across the adult life span while the TOL-F covers a broad range of graded difficulty even in healthy adults, making it suitable for both research and clinical application.
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Affiliation(s)
- Christoph P Kaller
- Department of Neurology, University Medical Center Freiburg, Freiburg, Germany Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Freiburg, Germany
| | | | - Lena Köstering
- Department of Neurology, University Medical Center Freiburg, Freiburg, Germany Freiburg Brain Imaging Center, University of Freiburg, Freiburg, Germany BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Freiburg, Germany Biological and Personality Psychology, Department of Psychology, University of Freiburg, Freiburg, Germany
| | | | - Benjamin Rahm
- Medical Psychology and Medical Sociology, University Medical Center Mainz, Mainz, Germany
| | - Philipp S Wild
- Preventive Cardiology and Preventive Medicine, Department of Medicine II, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Hamburg, Germany German Center for Cardiovascular Research (DZHK), partner site RhineMain, Mainz, Germany
| | - Maria Blettner
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Manfred E Beutel
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Josef M Unterrainer
- Medical Psychology and Medical Sociology, University Medical Center Mainz, Mainz, Germany
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13
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González-Giraldo Y, González-Reyes RE, Mueller ST, Piper BJ, Adan A, Forero DA. Differences in planning performance, a neurocognitive endophenotype, are associated with a functional variant in PER3 gene. Chronobiol Int 2015; 32:591-5. [PMID: 25798540 DOI: 10.3109/07420528.2015.1014096] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Performance alterations in executive function have been studied as potential endophenotypes for several neuropsychiatric diseases. Planning is an important component of executive function and has been shown to be affected in diseases such as attention deficit hyperactivity disorder, schizophrenia, obsessive-compulsive disorder and Parkinson's disease. Several genes related to dopaminergic systems, such as COMT, have been explored as candidates for influencing planning performance. The circadian clock gene PERIOD3 (PER3) has been shown to be associated with several complex behaviors in humans and could be involved in different signaling mechanisms. In this study, we evaluated the possible association between a functional polymorphism in the PER3 gene (PER3-VNTR, rs57875989) and performance in a commonly used test of planning (Tower of London, TOL) in 229 healthy subjects from Bogotá, Colombia. PER3-VNTR genotyping was carried out with conventional PCR and all participants completed the TOL test using the computerized Psychology Experiment Building Language (PEBL) battery. A linear regression model was used for the analysis of association with the SNPStats program. We found that 4/4 genotype carriers showed a better performance and made fewer moves, in comparison to 4/5 and 5/5 genotype carriers (p = 0.003). These results appear to be independent from effects of this polymorphism on self-reported average hours of sleep during work days in our sample. This is the first evidence of an association between PER3-VNTR and planning performance in a sample of healthy subjects and our results are consistent from previous findings for alterations in other cognitive domains. Future studies examining additional genes could lead to the identification of novel molecular underpinnings of planning in healthy subjects and in patients with neuropsychiatric disorders.
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Affiliation(s)
- Yeimy González-Giraldo
- Laboratory of NeuroPsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño , Bogotá , Colombia
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14
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Heinze K, Ruh N, Nitschke K, Reis J, Fritsch B, Unterrainer JM, Rahm B, Weiller C, Kaller CP. Transcranial direct current stimulation over left and right DLPFC: Lateralized effects on planning performance and related eye movements. Biol Psychol 2014; 102:130-40. [DOI: 10.1016/j.biopsycho.2014.07.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 05/18/2014] [Accepted: 07/26/2014] [Indexed: 10/24/2022]
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15
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Köstering L, Leonhart R, Stahl C, Weiller C, Kaller CP. Planning Decrements in Healthy Aging: Mediation Effects of Fluid Reasoning and Working Memory Capacity. J Gerontol B Psychol Sci Soc Sci 2014; 71:230-42. [DOI: 10.1093/geronb/gbu107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 07/17/2014] [Indexed: 11/14/2022] Open
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16
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Falquez R, Couto B, Ibanez A, Freitag MT, Berger M, Arens EA, Lang S, Barnow S. Detaching from the negative by reappraisal: the role of right superior frontal gyrus (BA9/32). Front Behav Neurosci 2014; 8:165. [PMID: 24847230 PMCID: PMC4023069 DOI: 10.3389/fnbeh.2014.00165] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 04/18/2014] [Indexed: 12/30/2022] Open
Abstract
The ability to reappraise the emotional impact of events is related to long-term mental health. Self-focused reappraisal (REAPPself), i.e., reducing the personal relevance of the negative events, has been previously associated with neural activity in regions near right medial prefrontal cortex, but rarely investigated among brain-damaged individuals. Thus, we aimed to examine the REAPPself ability of brain-damaged patients and healthy controls considering structural atrophies and gray matter intensities, respectively. Twenty patients with well-defined cortex lesions due to an acquired circumscribed tumor or cyst and 23 healthy controls performed a REAPPself task, in which they had to either observe negative stimuli or decrease emotional responding by REAPPself. Next, they rated the impact of negative arousal and valence. REAPPself ability scores were calculated by subtracting the negative picture ratings after applying REAPPself from the ratings of the observing condition. The scores of the patients were included in a voxel-based lesion-symptom mapping (VLSM) analysis to identify deficit related areas (ROI). Then, a ROI group-wise comparison was performed. Additionally, a whole-brain voxel-based-morphometry (VBM) analysis was run, in which healthy participant's REAPPself ability scores were correlated with gray matter intensities. Results showed that (1) regions in the right superior frontal gyrus (SFG), comprising the right dorsolateral prefrontal cortex (BA9) and the right dorsal anterior cingulate cortex (BA32), were associated with patient's impaired down-regulation of arousal, (2) a lesion in the depicted ROI occasioned significant REAPPself impairments, (3) REAPPself ability of controls was linked with increased gray matter intensities in the ROI regions. Our findings show for the first time that the neural integrity and the structural volume of right SFG regions (BA9/32) might be indispensable for REAPPself. Implications for neurofeedback research are discussed.
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Affiliation(s)
- Rosalux Falquez
- Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Heidelberg Heidelberg, Germany
| | - Blas Couto
- Laboratory of Experimental Psychology and Neuroscience, Institute of Cognitive Neurology, Favaloro University Buenos Aires, Argentina ; UDP-INECO Foundation Core on Neuroscience, Diego Portales University Santiago, Chile
| | - Agustin Ibanez
- Laboratory of Experimental Psychology and Neuroscience, Institute of Cognitive Neurology, Favaloro University Buenos Aires, Argentina ; UDP-INECO Foundation Core on Neuroscience, Diego Portales University Santiago, Chile ; Departamento de Psicología, Universidad Autónoma del Caribe Barranquilla, Colombia
| | - Martin T Freitag
- Department of Radiology, German Cancer Research Center Heidelberg, Germany
| | - Moritz Berger
- Department of Radiology, German Cancer Research Center Heidelberg, Germany
| | - Elisabeth A Arens
- Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Heidelberg Heidelberg, Germany
| | - Simone Lang
- Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Heidelberg Heidelberg, Germany
| | - Sven Barnow
- Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Heidelberg Heidelberg, Germany
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