201
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Estimating Functional Connectivity Symmetry between Oxy- and Deoxy-Haemoglobin: Implications for fNIRS Connectivity Analysis. ALGORITHMS 2018. [DOI: 10.3390/a11050070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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202
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Dalla Barba G, Brazzarola M, Barbera C, Marangoni S, Causin F, Bartolomeo P, Thiebaut de Schotten M. Different patterns of confabulation in left visuo-spatial neglect. Exp Brain Res 2018; 236:2037-2046. [PMID: 29744565 DOI: 10.1007/s00221-018-5281-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 05/03/2018] [Indexed: 01/06/2023]
Abstract
Confabulating patients produce statements and actions that are unintentionally incongruous to their history, background, present and future situation. Here we present the very unusual case of a patient with right hemisphere damage and signs of left visual neglect, who, when presented with visual stimuli, confabulated both for consciously undetected and for consciously detected left-sided details. Advanced anatomical investigation suggested a disconnection between the parietal and the temporal lobes in the right hemisphere. A disconnection between the ventral cortical visual stream and the dorsal fronto-parietal networks in the right hemisphere may contribute to confabulatory behaviour by restricting processing of left-sided stimuli to pre-conscious stages in the ventral visual stream.
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Affiliation(s)
- Gianfranco Dalla Barba
- INSERM, Paris, France.,Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Université, Paris, France.,Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy.,Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy
| | - Marta Brazzarola
- Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy
| | - Claudia Barbera
- Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy
| | - Sara Marangoni
- Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy
| | - Francesco Causin
- Azienda Ospedaliera di Padova, Unità Operativa Complessa di Neuroradiologia, Padova, Italy
| | - Paolo Bartolomeo
- Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Institut du Cerveau et de la Moelle épinière, ICM, Hôpital de la Pitié-Salpêtrière, 47 Boulevard de l'Hôpital, CS 21414, 75646, Paris Cedex 13, France.
| | - Michel Thiebaut de Schotten
- Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Institut du Cerveau et de la Moelle épinière, ICM, Hôpital de la Pitié-Salpêtrière, 47 Boulevard de l'Hôpital, CS 21414, 75646, Paris Cedex 13, France.,Brain Connectivity Behaviour group, Sorbonne Universities, Paris, France.,Groupe d'Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives-UMR 5293, CNRS, CEA University of Bordeaux, Bordeaux, France
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203
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Thiebaut de Schotten M, Urbanski M, Batrancourt B, Levy R, Dubois B, Cerliani L, Volle E. Rostro-caudal Architecture of the Frontal Lobes in Humans. Cereb Cortex 2018; 27:4033-4047. [PMID: 27461122 DOI: 10.1093/cercor/bhw215] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 06/20/2016] [Indexed: 11/12/2022] Open
Abstract
The nature of the inputs and outputs of a brain region defines its functional specialization. The frontal portion of the brain is essential for goal-directed behaviors, however, the biological basis for its functional organization is unknown. Here, exploring structural connectomic properties, we delineated 12 frontal areas, defined by the pattern of their white matter connections. This result was highly reproducible across neuroimaging centers, acquisition parameters, and participants. These areas corresponded to regions functionally engaged in specific tasks, organized along a rostro-caudal axis from the most complex high-order association areas to the simplest idiotopic areas. The rostro-caudal axis along which the 12 regions were organized also reflected a gradient of cortical thickness, myelination, and cell body density. Importantly, across the identified regions, this gradient of microstructural features was strongly associated with the varying degree of information processing complexity. These new anatomical signatures shed light onto the structural organization of the frontal lobes and could help strengthen the prediction or diagnosis of neurodevelopmental and neurodegenerative disorders.
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Affiliation(s)
- Michel Thiebaut de Schotten
- Brain Connectivity and Behaviour Group, Brain and Spine Institute, Paris, France.,Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Centre de Neuroimagerie de Recherche CENIR, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Marika Urbanski
- Brain Connectivity and Behaviour Group, Brain and Spine Institute, Paris, France.,Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Service de Médecine et de Réadaptation, Hôpitaux de Saint-Maurice, Saint-Maurice, France
| | - Benedicte Batrancourt
- Brain Connectivity and Behaviour Group, Brain and Spine Institute, Paris, France.,Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Richard Levy
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Bruno Dubois
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Leonardo Cerliani
- Brain Connectivity and Behaviour Group, Brain and Spine Institute, Paris, France.,Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France
| | - Emmanuelle Volle
- Brain Connectivity and Behaviour Group, Brain and Spine Institute, Paris, France.,Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Centre de Neuroimagerie de Recherche CENIR, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
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204
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Su M, Zhao J, Thiebaut de Schotten M, Zhou W, Gong G, Ramus F, Shu H. Alterations in white matter pathways underlying phonological and morphological processing in Chinese developmental dyslexia. Dev Cogn Neurosci 2018; 31:11-19. [PMID: 29727819 PMCID: PMC6969203 DOI: 10.1016/j.dcn.2018.04.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 04/10/2018] [Accepted: 04/10/2018] [Indexed: 01/18/2023] Open
Abstract
Chinese is a logographic language that is different from alphabetic languages in visual and semantic complexity. Thus far, it is still unclear whether Chinese children with dyslexia show similar disruption of white matter pathways as in alphabetic languages. The present study focused on the alteration of white matter pathways in Chinese children with dyslexia. Using diffusion tensor imaging tractography, the bilateral arcuate fasciculus (AF-anterior, AF-posterior and AF-direct segments), inferior fronto-occipital fasciculus (IFOF) and inferior longitudinal fasciculus (ILF) were delineated in each individual’s native space. Compared with age-matched controls, Chinese children with dyslexia showed reduced fractional anisotropy in the left AF-direct and the left ILF. Further regression analyses revealed a functional dissociation between the left AF-direct and the left ILF. The AF-direct tract integrity was associated with phonological processing skill, an ability important for reading in all writing systems, while the ILF integrity was associated with morphological processing skill, an ability more strongly recruited for Chinese reading. In conclusion, the double disruption locus in Chinese children with dyslexia, and the functional dissociation between dorsal and ventral pathways reflect both universal and specific properties of reading in Chinese.
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Affiliation(s)
- Mengmeng Su
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China; Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, CNRS, EHESS), Ecole Normale Supérieure, PSL Research University, Paris, France; College of Elementary Education, Capital Normal University, Beijing, China
| | - Jingjing Zhao
- School of Psychology, Shaanxi Normal University and Key Laboratory for Behavior and Cognitive Neuroscience of Shaanxi Province, Xi'an, China
| | - Michel Thiebaut de Schotten
- Brain Connectivity and Behaviour Group, Brain and Spine Institute (ICM), CNRS UMR 7225, INSERM-UPMC UMRS 1127, Paris, France
| | - Wei Zhou
- Beijing Key Lab of Learning and Cognition, School of Psychology, Capital Normal University, Beijing, China
| | - Gaolang Gong
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| | - Franck Ramus
- Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, CNRS, EHESS), Ecole Normale Supérieure, PSL Research University, Paris, France.
| | - Hua Shu
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China.
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205
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Awake Surgery for Gliomas within the Right Inferior Parietal Lobule: New Insights into the Functional Connectivity Gained from Stimulation Mapping and Surgical Implications. World Neurosurg 2018; 112:e393-e406. [DOI: 10.1016/j.wneu.2018.01.053] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 01/07/2018] [Accepted: 01/11/2018] [Indexed: 11/30/2022]
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206
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Bitsika V, Sharpley CF. The interaction of Matrix Reasoning and Social Motivation as predictors of Separation anxiety in boys with Autism Spectrum Disorder. Int J Dev Neurosci 2018; 67:6-13. [PMID: 29545099 DOI: 10.1016/j.ijdevneu.2018.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/19/2018] [Accepted: 03/11/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND It has been suggested that higher cognitive functioning based in the pre-frontal cortex is implicated in the ability of people with Autism Spectrum Disorder (ASD) to understand and communicate in social situations. Low motivation to engage in social interaction may also be influential in this process. Although both of these factors have been argued to influence the levels of comorbid anxiety in young people with ASD, no detailed examination of those relationships has been reported to date. METHODS A sample of 90 boys with ASD (aged 6 to 12 yr) and 29 of their non-ASD peers, matched for age and IQ, completed tests of cognitive function and anxiety. RESULTS Only one form of anxiety-fear of being separated from their parents- was significantly associated with cognitive function, at the Full Scale IQ and Matrix Reasoning levels, plus motivation to engage in social interactions, and only for the ASD boys. CONCLUSION These data represent a complex interaction between the neurobiological aspects of ASD, fluid reasoning, social motivation, and Separation Anxiety in boys with ASD. As such, they bring a new perspective to understanding and treating anxious behaviour in these boys.
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Affiliation(s)
- Vicki Bitsika
- Centre for Autism Spectrum Disorder, Bond University, Robina, 4229, Queensland, Australia.
| | - Christopher F Sharpley
- Brain-Behaviour Research Group, University of New England, Armidale, 2351, New South Wales, Australia.
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207
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Ivanova MV, Dragoy O, Kuptsova SV, Yu Akinina S, Petrushevskii AG, Fedina ON, Turken A, Shklovsky VM, Dronkers NF. Neural mechanisms of two different verbal working memory tasks: A VLSM study. Neuropsychologia 2018. [PMID: 29526647 DOI: 10.1016/j.neuropsychologia.2018.03.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Currently, a distributed bilateral network of frontal-parietal areas is regarded as the neural substrate of working memory (WM), with the verbal WM network being more left-lateralized. This conclusion is based primarily on functional magnetic resonance imaging (fMRI) data that provides correlational evidence for brain regions involved in a task. However, fMRI cannot differentiate the areas that are fundamentally required for performing a task. These data can only come from brain-injured individuals who fail the task after the loss of specific brain areas. In addition to the lack of complimentary data, is the issue of the variety in the WM tasks used to assess verbal WM. When different tasks are assumed to measure the same behavior, this may mask the contributions of different brain regions. Here, we investigated the neural substrate of WM by using voxel-based lesion symptom mapping (VLSM) in 49 individuals with stroke-induced left hemisphere brain injuries. These participants completed two different verbal WM tasks: complex listening span and a word 2-back task. Behavioral results indicated that the two tasks were only slightly related, while the VLSM analysis revealed different critical regions associated with each task. Specifically, significant detriments in performance on the complex span task were found with lesions in the inferior frontal gyrus, while for the 2-back task, significant deficits were seen after injury to the superior and middle temporal gyri. Thus, the two tasks depend on the structural integrity of different, non-overlapping frontal and temporal brain regions, suggesting distinct neural and cognitive mechanisms triggered by the two tasks: rehearsal and cue-dependent selection in the complex span task, versus updating/auditory recognition in the 2-back task. These findings call into question the common practice of using these two tasks interchangeably in verbal WM research and undermine the legitimacy of aggregating data from studies with different WM tasks. Thus, the present study points out the importance of lesion studies in complementing functional neuroimaging findings and highlights the need to consider task demands in neuroimaging and neuropsychological investigations of WM.
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Affiliation(s)
- M V Ivanova
- National Research University Higher School of Economics, Center for Language and Brain, 21/4 Staraya Basmannaya street, office 510, 105066 Moscow, Russian Federation; Center for Aphasia and Related Disorders, VA Northern California Health Care System, 150 Muir Road 126R, 94553 Martinez, CA, USA.
| | - O Dragoy
- National Research University Higher School of Economics, Center for Language and Brain, 21/4 Staraya Basmannaya street, office 510, 105066 Moscow, Russian Federation; Moscow Research Institute of Psychiatry, Department of Speech Pathology and Neurorehabilitation, 3 Poteshnaya street 3, 107076 Moscow, Russia
| | - S V Kuptsova
- National Research University Higher School of Economics, Center for Language and Brain, 21/4 Staraya Basmannaya street, office 510, 105066 Moscow, Russian Federation; Center for Speech Pathology and Neurorehabilitation, 20 Nikoloyamskaya street, 109240 Moscow, Russia
| | - S Yu Akinina
- National Research University Higher School of Economics, Center for Language and Brain, 21/4 Staraya Basmannaya street, office 510, 105066 Moscow, Russian Federation; University of Groningen, Graduate School for the Humanities, P.O. Box 716, NL-9700 AS Groningen, The Netherlands
| | - A G Petrushevskii
- Center for Speech Pathology and Neurorehabilitation, 20 Nikoloyamskaya street, 109240 Moscow, Russia
| | - O N Fedina
- Center for Speech Pathology and Neurorehabilitation, 20 Nikoloyamskaya street, 109240 Moscow, Russia
| | - A Turken
- Center for Aphasia and Related Disorders, VA Northern California Health Care System, 150 Muir Road 126R, 94553 Martinez, CA, USA
| | - V M Shklovsky
- Moscow Research Institute of Psychiatry, Department of Speech Pathology and Neurorehabilitation, 3 Poteshnaya street 3, 107076 Moscow, Russia; Center for Speech Pathology and Neurorehabilitation, 20 Nikoloyamskaya street, 109240 Moscow, Russia
| | - N F Dronkers
- National Research University Higher School of Economics, Center for Language and Brain, 21/4 Staraya Basmannaya street, office 510, 105066 Moscow, Russian Federation; Center for Aphasia and Related Disorders, VA Northern California Health Care System, 150 Muir Road 126R, 94553 Martinez, CA, USA; University of California, Davis, 1 Shields Ave, 95616 Davis, CA, USA
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208
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Nakajima R, Kinoshita M, Okita H, Yahata T, Matsui M, Nakada M. Neural Networks Mediating High-Level Mentalizing in Patients With Right Cerebral Hemispheric Gliomas. Front Behav Neurosci 2018; 12:33. [PMID: 29559899 PMCID: PMC5845682 DOI: 10.3389/fnbeh.2018.00033] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 02/14/2018] [Indexed: 02/03/2023] Open
Abstract
Mentalizing is the ability to understand others' mental state through external cues. It consists of two networks, namely low-level and high-level metalizing. Although it is an essential function in our daily social life, surgical resection of right cerebral hemisphere disturbs mentalizing processing with high possibility. In the past, little was known about the white matter related to high-level mentalizing, and the conservation of high-level mentalizing during surgery has not been a focus of attention. Therefore, the main purpose of this study was to examine the neural networks underlying high-level mentalizing and then, secondarily, investigate the usefulness of awake surgery in preserving the mentalizing network. A total of 20 patients with glioma localized in the right hemisphere who underwent awake surgery participated in this study. All patients were assigned to two groups: with or without intraoperative assessment of high-level mentalizing. Their high-level mentalizing abilities were assessed before surgery and 1 week and 3 months after surgery. At 3 months after surgery, only patients who received the intraoperative high-level mentalizing test showed the same score as normal healthy volunteers. The tract-based lesion symptom analysis was performed to confirm the severity of damage of associated fibers and high-level mentalizing accuracy. This analysis revealed the superior longitudinal fascicles (SLF) III and fronto-striatal tract (FST) to be associated with high-level mentalizing processing. Moreover, the voxel-based lesion symptom analysis demonstrated that resection of orbito-frontal cortex (OFC) causes persistent mentalizing dysfunction. Our study indicates that damage of the OFC and structural connectivity of the SLF and FST causes the disorder of mentalizing after surgery, and assessing high-level mentalizing during surgery may be useful to preserve these pathways.
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Affiliation(s)
- Riho Nakajima
- Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | | | - Hirokazu Okita
- Department of Physical Medicine and Rehabilitation, Kanazawa University Hospital, Kanazawa, Japan
| | - Tetsutaro Yahata
- Department of Physical Medicine and Rehabilitation, Kanazawa University Hospital, Kanazawa, Japan
| | - Mie Matsui
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan
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209
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Budisavljevic S, Dell'Acqua F, Zanatto D, Begliomini C, Miotto D, Motta R, Castiello U. Asymmetry and Structure of the Fronto-Parietal Networks Underlie Visuomotor Processing in Humans. Cereb Cortex 2018; 27:1532-1544. [PMID: 26759477 DOI: 10.1093/cercor/bhv348] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Research in both humans and monkeys has shown that even simple hand movements require cortical control beyond primary sensorimotor areas. An extensive functional neuroimaging literature demonstrates the key role that cortical fronto-parietal regions play for movements such as reaching and reach-to-grasp. However, no study so far has examined the specific white matter connections linking the fronto-parietal regions, namely the 3 parallel pathways of the superior longitudinal fasciculus (SLF). The aim of the current study was to explore how selective fronto-parietal connections are for different kinds of hand movement in 30 right-handed subjects by correlating diffusion imaging tractography and kinematic data. We showed that a common network, consisting of bilateral SLF II and SLF III, was involved in both reaching and reach-to-grasp movements. Larger SLF II and SLF III in the right hemisphere were associated with faster speed of visuomotor processing, while the left SLF II and SLF III played a role in the initial movement trajectory control. Furthermore, the right SLF II was involved in the closing grip phase necessary for efficient grasping of the object. We demonstrated for the first time that individual differences in asymmetry and structure of the fronto-parietal networks were associated with visuomotor processing in humans.
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Affiliation(s)
| | - Flavio Dell'Acqua
- Natbrainlab, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Debora Zanatto
- Department of General Psychology.,Cognitive Neuroscience Center
| | | | - Diego Miotto
- Department of Medicine, University of Padova, Padova, Italy
| | | | - Umberto Castiello
- Department of General Psychology.,Cognitive Neuroscience Center.,Centro Linceo Interdisciplinare, Accademia dei Lincei, Roma, Italy
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210
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Non-invasive imaging modalities to study neurodegenerative diseases of aging brain. J Chem Neuroanat 2018; 95:54-69. [PMID: 29474853 DOI: 10.1016/j.jchemneu.2018.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 02/16/2018] [Accepted: 02/16/2018] [Indexed: 12/13/2022]
Abstract
The aim of this article is to highlight current approaches for imaging elderly brain, indispensable for cognitive neuroscience research with emphasis on the basic physical principles of various non-invasive neuroimaging techniques. The first part of this article presents a quick overview of the primary non-invasive neuroimaging modalities used by cognitive neuroscientists such as transcranial magnetic stimulation (TMS), transcranial electrical stimulation (tES), electroencephalography (EEG), magnetoencephalography (MEG), single photon emission computed tomography (SPECT), positron emission tomography (PET), magnetic resonance spectroscopic imaging (MRSI), Profusion imaging, functional magnetic resonance imaging (fMRI), near infrared spectroscopy (NIRS) and diffusion tensor imaging (DTI) along with tractography and connectomics. The second part provides a comprehensive overview of different multimodality imaging techniques for various cognitive neuroscience studies of aging brain.
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211
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The way to “left” Piazza del Popolo: damage to white matter tracts in representational neglect for places. Brain Imaging Behav 2018; 12:1720-1729. [DOI: 10.1007/s11682-018-9839-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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212
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Garcin B, Urbanski M, Thiebaut de Schotten M, Levy R, Volle E. Anterior Temporal Lobe Morphometry Predicts Categorization Ability. Front Hum Neurosci 2018; 12:36. [PMID: 29467637 PMCID: PMC5808329 DOI: 10.3389/fnhum.2018.00036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 01/23/2018] [Indexed: 11/13/2022] Open
Abstract
Categorization is the mental operation by which the brain classifies objects and events. It is classically assessed using semantic and non-semantic matching or sorting tasks. These tasks show a high variability in performance across healthy controls and the cerebral bases supporting this variability remain unknown. In this study we performed a voxel-based morphometry study to explore the relationships between semantic and shape categorization tasks and brain morphometric differences in 50 controls. We found significant correlation between categorization performance and the volume of the gray matter in the right anterior middle and inferior temporal gyri. Semantic categorization tasks were associated with more rostral temporal regions than shape categorization tasks. A significant relationship was also shown between white matter volume in the right temporal lobe and performance in the semantic tasks. Tractography revealed that this white matter region involved several projection and association fibers, including the arcuate fasciculus, inferior fronto-occipital fasciculus, uncinate fasciculus, and inferior longitudinal fasciculus. These results suggest that categorization abilities are supported by the anterior portion of the right temporal lobe and its interaction with other areas.
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Affiliation(s)
- Béatrice Garcin
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Department of Neurology, Salpêtrière Hospital AP-HP, Paris, France
| | - Marika Urbanski
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Service de Médecine et Réadaptation, Hôpitaux de Saint-Maurice, Saint-Maurice, France.,Brain Connectivity and Behaviour Group, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Michel Thiebaut de Schotten
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Brain Connectivity and Behaviour Group, Institut du Cerveau et de la Moelle Epinière, Paris, France.,Centre de NeuroImagerie de Recherche, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Richard Levy
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Department of Neurology, Salpêtrière Hospital AP-HP, Paris, France
| | - Emmanuelle Volle
- Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.,Brain Connectivity and Behaviour Group, Institut du Cerveau et de la Moelle Epinière, Paris, France
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213
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Su M, Thiebaut de Schotten M, Zhao J, Song S, Zhou W, Gong G, McBride C, Ramus F, Shu H. Vocabulary growth rate from preschool to school-age years is reflected in the connectivity of the arcuate fasciculus in 14-year-old children. Dev Sci 2018; 21:e12647. [PMID: 29411464 DOI: 10.1111/desc.12647] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 10/30/2017] [Indexed: 12/31/2022]
Abstract
The acquisition of language involves the functional specialization of several cortical regions. Connectivity between these brain regions may also change with the development of language. Various studies have demonstrated that the arcuate fasciculus was essential for language function. Vocabulary learning is one of the most important skills in language acquisition. In the present longitudinal study, we explored the influence of vocabulary development on the anatomical properties of the arcuate fasciculus. Seventy-nine Chinese children participated in this study. Between age 4 and age 10, they were administered the same vocabulary task repeatedly. Following a previous study, children's vocabulary developmental trajectories were clustered into three subgroups (consistently good, catch-up, consistently poor). At age 14, diffusion tensor imaging data were collected. Using ROI-based tractography, the anterior, posterior and direct segments of the bilateral arcuate fasciculus were delineated in each child's native space. Group comparisons showed a significantly reduced fractional anisotropy in the left arcuate fasciculus of children in the consistently poor group, in particular in the posterior and direct segments of the arcuate fasciculus. No group differences were observed in the right hemisphere, nor in the left anterior segment. Further regression analyses showed that the rate of vocabulary development, rather than the initial vocabulary size, was a specific predictor of the left arcuate fasciculus connectivity.
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Affiliation(s)
- Mengmeng Su
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China.,Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, CNRS, EHESS), Ecole Normale Supérieure, PSL Research University, Paris, France.,College of Elementary Education, Capital Normal University, Beijing, China
| | - Michel Thiebaut de Schotten
- Brain Connectivity and Behaviour Group, Brain and Spine Institute (ICM), CNRS, UMR 7225, INSERM-UPMC, UMRS 1127, Paris, France
| | - Jingjing Zhao
- School of Psychology, Shaanxi Normal University and Key Laboratory for Behavior and Cognitive Neuroscience of Shaanxi Province, Xi'an, China
| | - Shuang Song
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China.,College of Teacher Education, Capital Normal University, Beijing, China
| | - Wei Zhou
- Beijing Key Lab of Learning and Cognition, School of Psychology, Capital Normal University, Beijing, China
| | - Gaolang Gong
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| | - Catherine McBride
- Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China
| | - Franck Ramus
- Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, CNRS, EHESS), Ecole Normale Supérieure, PSL Research University, Paris, France
| | - Hua Shu
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
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214
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Herbet G, Moritz-Gasser S, Boiseau M, Duvaux S, Cochereau J, Duffau H. Converging evidence for a cortico-subcortical network mediating lexical retrieval. Brain 2018; 139:3007-3021. [PMID: 27604309 DOI: 10.1093/brain/aww220] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 07/13/2016] [Indexed: 11/12/2022] Open
Affiliation(s)
- Guillaume Herbet
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France.,Institute for Neuroscience of Montpellier (INM), INSERM-1051, Team 4, Saint-Eloi Hospital, Montpellier University Medical Center, F-34091, Montpellier, France
| | - Sylvie Moritz-Gasser
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France.,Institute for Neuroscience of Montpellier (INM), INSERM-1051, Team 4, Saint-Eloi Hospital, Montpellier University Medical Center, F-34091, Montpellier, France.,Department of Neurology, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France
| | - Morgane Boiseau
- Department of Neurology, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France
| | - Sophie Duvaux
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France
| | - Jérôme Cochereau
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France
| | - Hugues Duffau
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295, Montpellier, France.,Institute for Neuroscience of Montpellier (INM), INSERM-1051, Team 4, Saint-Eloi Hospital, Montpellier University Medical Center, F-34091, Montpellier, France
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215
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Alyahya RSW, Halai AD, Conroy P, Lambon Ralph MA. Noun and verb processing in aphasia: Behavioural profiles and neural correlates. Neuroimage Clin 2018; 18:215-230. [PMID: 29868446 PMCID: PMC5984597 DOI: 10.1016/j.nicl.2018.01.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 12/18/2017] [Accepted: 01/18/2018] [Indexed: 01/08/2023]
Abstract
The behavioural and neural processes underpinning different word classes, particularly nouns and verbs, have been a long-standing area of interest in psycholinguistic, neuropsychology and aphasiology research. This topic has theoretical implications concerning the organisation of the language system, as well as clinical consequences related to the management of patients with language deficits. Research findings, however, have diverged widely, which might, in part, reflect methodological differences, particularly related to controlling the psycholinguistic variations between nouns and verbs. The first aim of this study, therefore, was to develop a set of neuropsychological tests that assessed single-word production and comprehension with a matched set of nouns and verbs. Secondly, the behavioural profiles and neural correlates of noun and verb processing were explored, based on these novel tests, in a relatively large cohort of 48 patients with chronic post-stroke aphasia. A data-driven approach, principal component analysis (PCA), was also used to determine how noun and verb production and comprehension were related to the patients' underlying fundamental language domains. The results revealed no performance differences between noun and verb production and comprehension once matched on multiple psycholinguistic features including, most critically, imageability. Interestingly, the noun-verb differences found in previous studies were replicated in this study once un-matched materials were used. Lesion-symptom mapping revealed overlapping neural correlates of noun and verb processing along left temporal and parietal regions. These findings support the view that the neural representation of noun and verb processing at single-word level are jointly-supported by distributed cortical regions. The PCA generated five fundamental language and cognitive components of aphasia: phonological production, phonological recognition, semantics, fluency, and executive function. Consistent with the behavioural analyses and lesion-symptom mapping results, both noun and verb processing loaded on common underlying language domains: phonological production and semantics. The neural correlates of these five principal components aligned with existing models of language and the regions implicated by other techniques such as functional neuroimaging and neuro-stimulation.
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Affiliation(s)
- Reem S W Alyahya
- Neuroscience and Aphasia Research Unit, Division of Neuroscience & Experimental Psychology, Manchester Academic Health Science Centre, University of Manchester, United Kingdom; King Fahad Medical City, Riyadh, Saudi Arabia.
| | - Ajay D Halai
- Neuroscience and Aphasia Research Unit, Division of Neuroscience & Experimental Psychology, Manchester Academic Health Science Centre, University of Manchester, United Kingdom
| | - Paul Conroy
- Neuroscience and Aphasia Research Unit, Division of Neuroscience & Experimental Psychology, Manchester Academic Health Science Centre, University of Manchester, United Kingdom
| | - Matthew A Lambon Ralph
- Neuroscience and Aphasia Research Unit, Division of Neuroscience & Experimental Psychology, Manchester Academic Health Science Centre, University of Manchester, United Kingdom.
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216
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Green PE, Ridding MC, Hill KD, Semmler JG, Drummond PD, Vallence AM. Supplementary motor area-primary motor cortex facilitation in younger but not older adults. Neurobiol Aging 2017; 64:85-91. [PMID: 29348045 DOI: 10.1016/j.neurobiolaging.2017.12.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 10/23/2017] [Accepted: 12/16/2017] [Indexed: 12/21/2022]
Abstract
Growing evidence implicates a decline in white matter integrity in the age-related decline in motor control. Functional neuroimaging studies show significant associations between functional connectivity in the cortical motor network, including the supplementary motor area (SMA), and motor performance. Dual-coil transcranial magnetic stimulation studies show facilitatory connections between SMA and the primary motor cortex (M1) in younger adults. Here, we investigated whether SMA-M1 facilitation is affected by age and whether the strength of SMA-M1 facilitation is associated with bilateral motor control. Dual-coil transcranial magnetic stimulation was used to measure SMA-M1 connectivity in younger (N = 20) and older adults (N = 18), and bilateral motor control was measured with the assembly subtest of the Purdue Pegboard and clinical measures of dynamic balance. SMA-M1 facilitation was seen in younger but not older adults, and a significant positive association was found between SMA-M1 facilitation and bimanual performance. These results show that SMA-M1 facilitation is reduced in older adults compared to younger adults and provide evidence of the functional importance of SMA-M1 facilitation.
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Affiliation(s)
- Peta E Green
- School of Psychology and Exercise Science, Murdoch University, Perth, Western Australia, Australia
| | - Michael C Ridding
- Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
| | - Keith D Hill
- School of Physiotherapy and Exercise Science, Curtin University, Perth, Western Australia, Australia
| | - John G Semmler
- Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
| | - Peter D Drummond
- School of Psychology and Exercise Science, Murdoch University, Perth, Western Australia, Australia
| | - Ann-Maree Vallence
- School of Psychology and Exercise Science, Murdoch University, Perth, Western Australia, Australia.
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217
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Román C, Guevara M, Valenzuela R, Figueroa M, Houenou J, Duclap D, Poupon C, Mangin JF, Guevara P. Clustering of Whole-Brain White Matter Short Association Bundles Using HARDI Data. Front Neuroinform 2017; 11:73. [PMID: 29311886 PMCID: PMC5744462 DOI: 10.3389/fninf.2017.00073] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 12/05/2017] [Indexed: 12/29/2022] Open
Abstract
Human brain connectivity is extremely complex and variable across subjects. While long association and projection bundles are stable and have been deeply studied, short association bundles present higher intersubject variability, and few studies have been carried out to adequately describe the structure, shape, and reproducibility of these bundles. However, their analysis is crucial to understand brain function and better characterize the human connectome. In this study, we propose an automatic method to identify reproducible short association bundles of the superficial white matter, based on intersubject hierarchical clustering. The method is applied to the whole brain and finds representative clusters of similar fibers belonging to a group of subjects, according to a distance metric between fibers. We experimented with both affine and non-linear registrations and, due to better reproducibility, chose the results obtained from non-linear registration. Once the clusters are calculated, our method performs automatic labeling of the most stable connections based on individual cortical parcellations. We compare results between two independent groups of subjects from a HARDI database to generate reproducible connections for the creation of an atlas. To perform a better validation of the results, we used a bagging strategy that uses pairs of groups of 27 subjects from a database of 74 subjects. The result is an atlas with 44 bundles in the left hemisphere and 49 in the right hemisphere, of which 33 bundles are found in both hemispheres. Finally, we use the atlas to automatically segment 78 new subjects from a different HARDI database and to analyze stability and lateralization results.
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Affiliation(s)
- Claudio Román
- Department of Electrical Engineering, Universidad de Concepción, Concepción, Chile
| | - Miguel Guevara
- Department of Electrical Engineering, Universidad de Concepción, Concepción, Chile
| | - Ronald Valenzuela
- Department of Electrical Engineering, Universidad de Concepción, Concepción, Chile
| | - Miguel Figueroa
- Department of Electrical Engineering, Universidad de Concepción, Concepción, Chile
| | - Josselin Houenou
- Neurospin, I2BM, CEA, Gif-sur-Yvette, France.,APHP, Pôle de Psychiatrie, DHU PePsy, INSERM U955 Eq. 15 "Psychiatrie Translationnelle", Université Paris Est, Créteil, France
| | | | | | | | - Pamela Guevara
- Department of Electrical Engineering, Universidad de Concepción, Concepción, Chile
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218
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Damage of the right dorsal superior longitudinal fascicle by awake surgery for glioma causes persistent visuospatial dysfunction. Sci Rep 2017; 7:17158. [PMID: 29215071 PMCID: PMC5719443 DOI: 10.1038/s41598-017-17461-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/27/2017] [Indexed: 11/20/2022] Open
Abstract
Patients with glioma frequently present with neuropsychological deficits preoperatively and/or postoperatively, and these deficits may remain after the chronic phase. However, little is known about postoperative recovery course of right hemispheric function. We therefore studied the characteristics and causes of persistent cognitive dysfunction in right cerebral hemispheric glioma. Eighteen patients who underwent awake surgery participated in this study. All patients who received preoperative neuropsychological examinations were assigned to two groups according to their test results: preoperative deficit and normal. They were reassessed 1 week and 3 months after surgery. The rates of remaining deficits in the deficit group at chronic phase were higher than those of the normal group for all functions. Despite preoperative normal function, the remaining rate for visuospatial cognitive deficits was the highest among all functions. The voxel-based lesion-symptom mapping analysis for visuospatial cognition revealed that a part of the medial superior and middle frontal gyri were resected with high probability in patients with low visuospatial cognitive accuracy. Our study indicates that in patients with preoperative neuropsychological deficits, these deficits tend to remain until the chronic phase. Visuospatial dysfunction frequently persists until the chronic phase, which might reflect damage to the superior longitudinal fasciclus I and II.
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219
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Strength of Temporal White Matter Pathways Predicts Semantic Learning. J Neurosci 2017; 37:11101-11113. [PMID: 29025925 DOI: 10.1523/jneurosci.1720-17.2017] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/13/2017] [Accepted: 09/20/2017] [Indexed: 12/12/2022] Open
Abstract
Learning the associations between words and meanings is a fundamental human ability. Although the language network is cortically well defined, the role of the white matter pathways supporting novel word-to-meaning mappings remains unclear. Here, by using contextual and cross-situational word learning, we tested whether learning the meaning of a new word is related to the integrity of the language-related white matter pathways in 40 adults (18 women). The arcuate, uncinate, inferior-fronto-occipital and inferior-longitudinal fasciculi were virtually dissected using manual and automatic deterministic fiber tracking. Critically, the automatic method allowed assessing the white matter microstructure along the tract. Results demonstrate that the microstructural properties of the left inferior-longitudinal fasciculus predict contextual learning, whereas the left uncinate was associated with cross-situational learning. In addition, we identified regions of special importance within these pathways: the posterior middle temporal gyrus, thought to serve as a lexical interface and specifically related to contextual learning; the anterior temporal lobe, known to be an amodal hub for semantic processing and related to cross-situational learning; and the white matter near the hippocampus, a structure fundamental for the initial stages of new-word learning and, remarkably, related to both types of word learning. No significant associations were found for the inferior-fronto-occipital fasciculus or the arcuate. While previous results suggest that learning new phonological word forms is mediated by the arcuate fasciculus, these findings show that the temporal pathways are the crucial neural substrate supporting one of the most striking human abilities: our capacity to identify correct associations between words and meanings under referential indeterminacy.SIGNIFICANCE STATEMENT The language-processing network is cortically (i.e., gray matter) well defined. However, the role of the white matter pathways that support novel word learning within this network remains unclear. In this work, we dissected language-related (arcuate, uncinate, inferior-fronto-occipital, and inferior-longitudinal) fasciculi using manual and automatic tracking. We found the left inferior-longitudinal fasciculus to be predictive of word-learning success in two word-to-meaning tasks: contextual and cross-situational learning paradigms. The left uncinate was predictive of cross-situational word learning. No significant correlations were found for the arcuate or the inferior-fronto-occipital fasciculus. While previous results showed that learning new phonological word forms is supported by the arcuate fasciculus, these findings demonstrate that learning new word-to-meaning associations is mainly dependent on temporal white matter pathways.
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220
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White matter microstructure of attentional networks predicts attention and consciousness functional interactions. Brain Struct Funct 2017; 223:653-668. [PMID: 28905109 DOI: 10.1007/s00429-017-1511-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 09/06/2017] [Indexed: 10/18/2022]
Abstract
Attention is considered as one of the pre-requisites of conscious perception. Phasic alerting and exogenous orienting improve conscious perception of near-threshold information through segregated brain networks. Using a multimodal neuroimaging approach, combining data from functional MRI (fMRI) and diffusion-weighted imaging (DWI), we investigated the influence of white matter properties of the ventral branch of superior longitudinal fasciculus (SLF III) in functional interactions between attentional systems and conscious perception. Results revealed that (1) reduced integrity of the left hemisphere SLF III was predictive of the neural interactions observed between exogenous orienting and conscious perception, and (2) increased integrity of the left hemisphere SLF III was predictive of the neural interactions observed between phasic alerting and conscious perception. Our results combining fMRI and DWI data demonstrate that structural properties of the white matter organization determine attentional modulations over conscious perception.
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221
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Bourlon C, Urbanski M, Quentin R, Duret C, Bardinet E, Bartolomeo P, Bourgeois A. Cortico-thalamic disconnection in a patient with supernumerary phantom limb. Exp Brain Res 2017; 235:3163-3174. [PMID: 28752330 DOI: 10.1007/s00221-017-5044-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 07/20/2017] [Indexed: 11/24/2022]
Abstract
Supernumerary phantom limb (SPL) designates the experience of an illusory additional limb occurring after brain damage. Functional neuroimaging during SPL movements documented increased response in the ipsilesional supplementary motor area (SMA), premotor cortex (PMC), thalamus and caudate. This suggested that motor circuits are important for bodily related cognition, but anatomical evidence is sparse. Here, we tested this hypothesis by studying an extremely rare patient with chronic SPL, still present 3 years after a vascular stroke affecting cortical and subcortical right-hemisphere structures. Anatomical analysis included an advanced in vivo reconstruction of white matter tracts using diffusion-based spherical deconvolution. This reconstruction demonstrated a massive and relatively selective disconnection between anatomically preserved SMA/PMC and the thalamus. Our results provide strong anatomical support for the hypothesis that cortico-thalamic loops involving motor-related circuits are crucial to integrate sensorimotor processing with bodily self-awareness.
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Affiliation(s)
- Clémence Bourlon
- Unité de Neurorééducation, Centre de Rééducation Fonctionnelle Les Trois Soleils, 77310, Boissise Le Roi, France. .,Service de Médecine et de Réadaptation gériatrique et neurologique, Hôpitaux de Saint-Maurice, 94410, Saint-Maurice, France. .,Inserm U1127, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, CNRS UMR 7225, Brain and Spine Institute, Groupe Hospitalier Pitié-Salpêtrière, 75013, Paris, France.
| | - Marika Urbanski
- Service de Médecine et de Réadaptation gériatrique et neurologique, Hôpitaux de Saint-Maurice, 94410, Saint-Maurice, France.,Inserm U1127, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, CNRS UMR 7225, Brain and Spine Institute, Groupe Hospitalier Pitié-Salpêtrière, 75013, Paris, France
| | - Romain Quentin
- National Institute of Neurological Disorders and Stroke (NINDS), Bethesda, MD, USA
| | - Christophe Duret
- Unité de Neurorééducation, Centre de Rééducation Fonctionnelle Les Trois Soleils, 77310, Boissise Le Roi, France.,Centre Hospitalier Sud Francilien, Neurologie, 91100, Corbeil-Essonnes, France
| | - Eric Bardinet
- Centre de NeuroImagerie de Recherche-CENIR, Institut du Cerveau et de la Moelle épinière-ICM, 75013, Paris, France
| | - Paolo Bartolomeo
- Inserm U1127, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, CNRS UMR 7225, Brain and Spine Institute, Groupe Hospitalier Pitié-Salpêtrière, 75013, Paris, France
| | - Alexia Bourgeois
- Laboratory for Behavioral Neurology and Imaging of Cognition, Neuroscience Department, University of Geneva, Geneva, Switzerland
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222
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Garyfallidis E, Côté MA, Rheault F, Sidhu J, Hau J, Petit L, Fortin D, Cunanne S, Descoteaux M. Recognition of white matter bundles using local and global streamline-based registration and clustering. Neuroimage 2017; 170:283-295. [PMID: 28712994 DOI: 10.1016/j.neuroimage.2017.07.015] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 06/06/2017] [Accepted: 07/10/2017] [Indexed: 11/17/2022] Open
Abstract
Virtual dissection of diffusion MRI tractograms is cumbersome and needs extensive knowledge of white matter anatomy. This virtual dissection often requires several inclusion and exclusion regions-of-interest that make it a process that is very hard to reproduce across experts. Having automated tools that can extract white matter bundles for tract-based studies of large numbers of people is of great interest for neuroscience and neurosurgical planning. The purpose of our proposed method, named RecoBundles, is to segment white matter bundles and make virtual dissection easier to perform. This can help explore large tractograms from multiple persons directly in their native space. RecoBundles leverages latest state-of-the-art streamline-based registration and clustering to recognize and extract bundles using prior bundle models. RecoBundles uses bundle models as shape priors for detecting similar streamlines and bundles in tractograms. RecoBundles is 100% streamline-based, is efficient to work with millions of streamlines and, most importantly, is robust and adaptive to incomplete data and bundles with missing components. It is also robust to pathological brains with tumors and deformations. We evaluated our results using multiple bundles and showed that RecoBundles is in good agreement with the neuroanatomical experts and generally produced more dense bundles. Across all the different experiments reported in this paper, RecoBundles was able to identify the core parts of the bundles, independently from tractography type (deterministic or probabilistic) or size. Thus, RecoBundles can be a valuable method for exploring tractograms and facilitating tractometry studies.
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Affiliation(s)
- Eleftherios Garyfallidis
- Department of Intelligent Systems Engineering, School of Informatics and Computing, Indiana University, Bloomington, USA.
| | - Marc-Alexandre Côté
- Sherbrooke Connectivity Imaging Lab (SCIL), Computer Science Department, Université de Sherbrooke, Sherbrooke, Canada
| | - Francois Rheault
- Sherbrooke Connectivity Imaging Lab (SCIL), Computer Science Department, Université de Sherbrooke, Sherbrooke, Canada
| | - Jasmeen Sidhu
- Sherbrooke Connectivity Imaging Lab (SCIL), Computer Science Department, Université de Sherbrooke, Sherbrooke, Canada
| | - Janice Hau
- Brain Development Imaging Lab (BDIL), Department of Psychology, San Diego State University, USA; Groupe d' Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives, UMR5293, CNRS, CEA Université de Bordeaux, Bordeaux, France
| | - Laurent Petit
- Groupe d' Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives, UMR5293, CNRS, CEA Université de Bordeaux, Bordeaux, France
| | - David Fortin
- Division of Neurosurgery and Neuro-Oncology, Faculty of Medicine and Health Science, University of Sherbrooke, Sherbrooke, Québec, Canada
| | - Stephen Cunanne
- Research Center on Aging and Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Maxime Descoteaux
- Sherbrooke Connectivity Imaging Lab (SCIL), Computer Science Department, Université de Sherbrooke, Sherbrooke, Canada
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223
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Herbet G, Yordanova YN, Duffau H. Left Spatial Neglect Evoked by Electrostimulation of the Right Inferior Fronto-occipital Fasciculus. Brain Topogr 2017; 30:747-756. [DOI: 10.1007/s10548-017-0574-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 06/17/2017] [Indexed: 10/19/2022]
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224
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Rosso C, Perlbarg V, Valabregue R, Obadia M, Kemlin-Méchin C, Moulton E, Leder S, Meunier S, Lamy JC. Anatomical and functional correlates of cortical motor threshold of the dominant hand. Brain Stimul 2017; 10:952-958. [PMID: 28551318 DOI: 10.1016/j.brs.2017.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/04/2017] [Accepted: 05/15/2017] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Resting Motor threshold (rMT) provides information about cortical motor excitability. Interestingly, the influences of the structural or functional variability of the motor system on the rMT inter-individual variability have been poorly investigated. OBJECTIVE/HYPOTHESIS To investigate relationships between rMT and measures of brain structures and function of the motor system. The hypothesis is that cortical excitability not only depends on the primary motor cortex (M1) but also on the integration of information originating from its vicinity such as premotor (PMd and SMA) and post-central (S1) cortices. METHODS We measured brain structures, including grey and white matter properties (cortical volume and fiber coherence respectively), and functional interaction (resting-state functional connectivity-FC) in areas contributing to the corticospinal tract axons, i. e, M1, S1, SMA and PMd in the dominant hemisphere of 21 healthy subjects. RESULTS The rMT was inversely correlated with the FC between PMd and M1 (r = -0.496, 95%CI: -0.764; -0.081; p = 0.02) and the grey matter volume of the dominant hemisphere (r = -0.463, 95%CI: -0.746; -0.039; p = 0.03). The multiple regression analysis model retained the FC between M1 and PMd (coefficient: -25 ± 9) as well as the grey matter volume of the dominant hemisphere (coefficient: -0.15 ± 0.06) explaining 44% of the variance of the rMT (p: 0.005). When adding age and coil-to-cortex distance, two factors known to influence rMT, the model reached a R2 of 75% (p: 0.0001). CONCLUSIONS These results underline the major role of the PMd and the cortico-cortical connections toward M1 in the excitation of the corticospinal fibers likely through trans-synaptic pathways.
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Affiliation(s)
- Charlotte Rosso
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France; AP-HP, Urgences Cérébro-Vasculaires, Hôpital Pitié-Salpêtrière, F-75013, Paris, France.
| | - Vincent Perlbarg
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, CNRS, INSERM, Laboratoire d'imagerie biomédicale (LIB), F-75013, Paris, France; Bioinformatics and Biostatistics Core Facility, iCONICS, IHU-A-ICM, Institut du Cerveau et de la Moelle épinière, Paris, France
| | - Romain Valabregue
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France; Centre de Neuro-imagerie de Recherche, CENIR, F-75013, Paris, France
| | - Mickaël Obadia
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France; AP-HP, Urgences Cérébro-Vasculaires, Hôpital Pitié-Salpêtrière, F-75013, Paris, France
| | - Claire Kemlin-Méchin
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France
| | - Eric Moulton
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France
| | - Sara Leder
- AP-HP, Urgences Cérébro-Vasculaires, Hôpital Pitié-Salpêtrière, F-75013, Paris, France
| | - Sabine Meunier
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France
| | - Jean-Charles Lamy
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France; Centre de Neuro-imagerie de Recherche, CENIR, F-75013, Paris, France
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Morita T, Saito DN, Ban M, Shimada K, Okamoto Y, Kosaka H, Okazawa H, Asada M, Naito E. Self-face recognition shares brain regions active during proprioceptive illusion in the right inferior fronto-parietal superior longitudinal fasciculus III network. Neuroscience 2017; 348:288-301. [DOI: 10.1016/j.neuroscience.2017.02.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/31/2017] [Accepted: 02/15/2017] [Indexed: 01/27/2023]
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226
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Piai V, Meyer L, Dronkers NF, Knight RT. Neuroplasticity of language in left-hemisphere stroke: Evidence linking subsecond electrophysiology and structural connections. Hum Brain Mapp 2017; 38:3151-3162. [PMID: 28345282 DOI: 10.1002/hbm.23581] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 03/08/2017] [Accepted: 03/11/2017] [Indexed: 12/27/2022] Open
Abstract
The understanding of neuroplasticity following stroke is predominantly based on neuroimaging measures that cannot address the subsecond neurodynamics of impaired language processing. We combined behavioral and electrophysiological measures and structural-connectivity estimates to characterize neuroplasticity underlying successful compensation of language abilities after left-hemispheric stroke. We recorded the electroencephalogram from patients with stroke lesions to the left temporal lobe and from matched controls during context-driven word retrieval. Participants heard lead-in sentences that either constrained the final word ("He locked the door with the") or not ("She walked in here with the"). The last word was shown as a picture to be named. Individual-participant analyses were conducted, focusing on oscillatory power as a subsecond indicator of a brain region's functional neurophysiological computations. All participants named pictures faster following constrained than unconstrained sentences, except for two patients, who had extensive damage to the left temporal lobe. Left-lateralized alpha-beta oscillatory power decreased in controls pre-picture presentation for constrained relative to unconstrained contexts. In patients, the alpha-beta power decreases were observed with the same time course as in controls but were lateralized to the intact right hemisphere. The right lateralization depended on the probability of white-matter connections between the bilateral temporal lobes. The two patients who performed poorly behaviorally showed no alpha-beta power decreases. Our findings suggest that incorporating direct measures of neural activity into investigations of neuroplasticity can provide important neural markers to help predict language recovery, assess the progress of neurorehabilitation, and delineate targets for therapeutic neuromodulation. Hum Brain Mapp 38:3151-3162, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Vitória Piai
- Radboud University, Donders Centre for Cognition, Nijmegen, the Netherlands.,Radboudumc, Department of Medical Psychology, Nijmegen, the Netherlands.,Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, California.,Center for Aphasia and Related Disorders, Veterans Affairs Northern California Health Care System, Martinez, California
| | - Lars Meyer
- Department of Neuropsychology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Nina F Dronkers
- Center for Aphasia and Related Disorders, Veterans Affairs Northern California Health Care System, Martinez, California.,Department of Neurology, University of California, Davis, California.,Neurolinguistics Laboratory, National Research University Higher School of Economics, Moscow, Russia
| | - Robert T Knight
- Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, California
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227
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Yordanova YN, Duffau H, Herbet G. Neural pathways subserving face-based mentalizing. Brain Struct Funct 2017; 222:3087-3105. [DOI: 10.1007/s00429-017-1388-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/13/2017] [Indexed: 10/20/2022]
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228
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Griffis JC, Nenert R, Allendorfer JB, Szaflarski JP. Damage to white matter bottlenecks contributes to language impairments after left hemispheric stroke. Neuroimage Clin 2017; 14:552-565. [PMID: 28337410 PMCID: PMC5350568 DOI: 10.1016/j.nicl.2017.02.019] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/16/2017] [Accepted: 02/23/2017] [Indexed: 11/29/2022]
Abstract
Damage to the white matter underlying the left posterior temporal lobe leads to deficits in multiple language functions. The posterior temporal white matter may correspond to a bottleneck where both dorsal and ventral language pathways are vulnerable to simultaneous damage. Damage to a second putative white matter bottleneck in the left deep prefrontal white matter involving projections associated with ventral language pathways and thalamo-cortical projections has recently been proposed as a source of semantic deficits after stroke. Here, we first used white matter atlases to identify the previously described white matter bottlenecks in the posterior temporal and deep prefrontal white matter. We then assessed the effects of damage to each region on measures of verbal fluency, picture naming, and auditory semantic decision-making in 43 chronic left hemispheric stroke patients. Damage to the posterior temporal bottleneck predicted deficits on all tasks, while damage to the anterior bottleneck only significantly predicted deficits in verbal fluency. Importantly, the effects of damage to the bottleneck regions were not attributable to lesion volume, lesion loads on the tracts traversing the bottlenecks, or damage to nearby cortical language areas. Multivariate lesion-symptom mapping revealed additional lesion predictors of deficits. Post-hoc fiber tracking of the peak white matter lesion predictors using a publicly available tractography atlas revealed evidence consistent with the results of the bottleneck analyses. Together, our results provide support for the proposal that spatially specific white matter damage affecting bottleneck regions, particularly in the posterior temporal lobe, contributes to chronic language deficits after left hemispheric stroke. This may reflect the simultaneous disruption of signaling in dorsal and ventral language processing streams.
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Affiliation(s)
- Joseph C. Griffis
- University of Alabama at Birmingham, Department of Psychology, United States
| | - Rodolphe Nenert
- University of Alabama at Birmingham, Department of Neurology, United States
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229
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Corrivetti F, Herbet G, Moritz-Gasser S, Duffau H. Prosopagnosia Induced by a Left Anterior Temporal lobectomy Following a Right Temporo-occipital Resection in a Multicentric Diffuse Low-Grade Glioma. World Neurosurg 2017; 97:756.e1-756.e5. [DOI: 10.1016/j.wneu.2016.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/01/2016] [Accepted: 10/04/2016] [Indexed: 10/20/2022]
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230
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Brain morphometry predicts individual creative potential and the ability to combine remote ideas. Cortex 2017; 86:216-229. [DOI: 10.1016/j.cortex.2016.10.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 05/19/2016] [Accepted: 10/28/2016] [Indexed: 11/21/2022]
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231
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Carter AR, McAvoy MP, Siegel JS, Hong X, Astafiev SV, Rengachary J, Zinn K, Metcalf NV, Shulman GL, Corbetta M. Differential white matter involvement associated with distinct visuospatial deficits after right hemisphere stroke. Cortex 2016; 88:81-97. [PMID: 28081452 DOI: 10.1016/j.cortex.2016.12.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 07/07/2016] [Accepted: 12/08/2016] [Indexed: 02/05/2023]
Abstract
Visuospatial attention depends on the integration of multiple processes, and people with right hemisphere lesions after a stroke may exhibit severe or no visuospatial deficits. The anatomy of core components of visuospatial attention is an area of intense interest. Here we examine the relationship between the disruption of core components of attention and lesion distribution in a heterogeneous group (N = 70) of patients with right hemisphere strokes regardless of the presence of clinical neglect. Deficits of lateralized spatial orienting, measured as the difference in reaction times for responding to visual targets in the contralesional or ipsilesional visual field, and deficits in re-orienting attention, as measured by the difference in reaction times for invalidly versus validly cued targets, were measured using a computerized spatial orienting task. Both measures were related through logistic regression and a novel ridge regression method to anatomical damage measured with magnetic resonance imaging. While many regions were common to both deficit maps, a deficit in lateralized spatial orienting was more associated with lesions in the white matter underlying the posterior parietal cortex, and middle and inferior frontal gyri. A deficit in re-orienting of attention toward unattended locations was associated with lesions in the white matter of the posterior parietal cortex, insular cortex and less so with white matter involvement of the anterior frontal lobe. An hodological analysis also supports this partial dissociation between the white matter tracts that are damaged in lateralized spatial biases versus impaired re-orienting. Our results underscore that the integrity of fronto-parietal white matter tracts is crucial for visuospatial attention and that different attention components are mediated by partially distinct neuronal substrates.
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Affiliation(s)
- Alex R Carter
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA.
| | - Mark P McAvoy
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Joshua S Siegel
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Xin Hong
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Serguei V Astafiev
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Jennifer Rengachary
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Kristi Zinn
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Nicholas V Metcalf
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Gordon L Shulman
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Maurizio Corbetta
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA; Department of Radiology, Washington University School of Medicine, St. Louis, MO, USA; Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO, USA
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232
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Cazzoli D, Hopfner S, Preisig B, Zito G, Vanbellingen T, Jäger M, Nef T, Mosimann U, Bohlhalter S, Müri RM, Nyffeler T. The influence of naturalistic, directionally non-specific motion on the spatial deployment of visual attention in right-hemispheric stroke. Neuropsychologia 2016; 92:181-189. [DOI: 10.1016/j.neuropsychologia.2016.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 04/04/2016] [Accepted: 04/17/2016] [Indexed: 11/24/2022]
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233
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Triviño M, Correa Á, Lupiáñez J, Funes MJ, Catena A, He X, Humphreys GW. Brain networks of temporal preparation: A multiple regression analysis of neuropsychological data. Neuroimage 2016; 142:489-497. [DOI: 10.1016/j.neuroimage.2016.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/25/2016] [Accepted: 08/09/2016] [Indexed: 11/24/2022] Open
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234
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Toward a functional neuroanatomy of semantic aphasia: A history and ten new cases. Cortex 2016; 97:164-182. [PMID: 28277283 DOI: 10.1016/j.cortex.2016.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 04/17/2016] [Accepted: 09/18/2016] [Indexed: 11/21/2022]
Abstract
Almost 70 years ago, Alexander Luria incorporated semantic aphasia among his aphasia classifications by demonstrating that deficits in linking the logical relationships of words in a sentence could co-occur with non-linguistic disorders of calculation, spatial gnosis and praxis deficits. In line with his comprehensive approach to the assessment of language and other cognitive functions, he argued that deficits in understanding semantically reversible sentences and prepositional phrases, for example, were in line with a single neuropsychological factor of impaired spatial analysis and synthesis, since understanding such grammatical relationships would also draw on their spatial relationships. Critically, Luria demonstrated the neural underpinnings of this syndrome with the critical implication of the cortex of the left temporal-parietal-occipital (TPO) junction. In this study, we report neuropsychological and lesion profiles of 10 new cases of semantic aphasia. Modern neuroimaging techniques provide support for the relevance of the left TPO area for semantic aphasia, but also extend Luria's neuroanatomical model by taking into account white matter pathways. Our findings suggest that tracts with parietal connectivity - the arcuate fasciculus (long and posterior segments), the inferior fronto-occipital fasciculus, the inferior longitudinal fasciculus, the superior longitudinal fasciculus II and III, and the corpus callosum - are implicated in the linguistic and non-linguistic deficits of patients with semantic aphasia.
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235
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Jenkins LM, Barba A, Campbell M, Lamar M, Shankman SA, Leow AD, Ajilore O, Langenecker SA. Shared white matter alterations across emotional disorders: A voxel-based meta-analysis of fractional anisotropy. NEUROIMAGE-CLINICAL 2016; 12:1022-1034. [PMID: 27995068 PMCID: PMC5153602 DOI: 10.1016/j.nicl.2016.09.001] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 08/30/2016] [Accepted: 09/01/2016] [Indexed: 02/02/2023]
Abstract
Background White matter (WM) integrity may represent a shared biomarker for emotional disorders (ED). Aims: To identify transdiagnostic biomarkers of reduced WM by meta-analysis of findings across multiple EDs. Method Web of Science was searched systematically for studies of whole brain analysis of fractional anisotropy (FA) in adults with major depressive disorder, bipolar disorder, social anxiety disorder, obsessive-compulsive disorder or posttraumatic stress disorder compared with a healthy control (HC) group. Peak MNI coordinates were extracted from 37 studies of voxel-based analysis (892 HC and 962 with ED) and meta-analyzed using seed-based d Mapping (SDM) Version 4.31. Separate meta-analyses were also conducted for each disorder. Results In the transdiagnostic meta-analysis, reduced FA was identified in ED studies compared to HCs in the left inferior fronto-occipital fasciculus, forceps minor, uncinate fasciculus, anterior thalamic radiation, superior corona radiata, bilateral superior longitudinal fasciculi, and cerebellum. Disorder-specific meta-analyses revealed the OCD group had the most similarities in reduced FA to other EDs, with every cluster of reduced FA overlapping with at least one other diagnosis. The PTSD group was the most distinct, with no clusters of reduced FA overlapping with any other diagnosis. The BD group were the only disorder to show increased FA in any region, and showed a more bilateral pattern of WM changes, compared to the other groups which tended to demonstrate a left lateralized pattern of FA reductions. Conclusions Distinct diagnostic categories of ED show commonalities in WM tracts with reduced FA when compared to HC, which links brain networks involved in cognitive and affective processing. This meta-analysis facilitates an increased understanding of the biological markers that are shared by these ED. A meta-analysis of FA in MDD, bipolar, social anxiety disorder, OCD and PTSD Reduced FA in left superior longitudinal and inferior fronto-occipital fasciculi Distinct diagnostic categories show commonalities of white matter changes. Differences among diagnostic categories also found, PTSD most distinct White matter integrity may be a shared biomarker for emotional disorders.
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Affiliation(s)
| | - Alyssa Barba
- The University of Illinois at Chicago, Department of Psychiatry
| | | | - Melissa Lamar
- The University of Illinois at Chicago, Department of Psychiatry
| | | | - Alex D Leow
- The University of Illinois at Chicago, Department of Psychiatry
| | - Olusola Ajilore
- The University of Illinois at Chicago, Department of Psychiatry
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236
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Parlatini V, Radua J, Dell'Acqua F, Leslie A, Simmons A, Murphy DG, Catani M, Thiebaut de Schotten M. Functional segregation and integration within fronto-parietal networks. Neuroimage 2016; 146:367-375. [PMID: 27639357 PMCID: PMC5312783 DOI: 10.1016/j.neuroimage.2016.08.031] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 08/11/2016] [Accepted: 08/16/2016] [Indexed: 11/25/2022] Open
Abstract
Experimental data on monkeys and functional studies in humans support the existence of a complex fronto-parietal system activating for cognitive and motor tasks, which may be anatomically supported by the superior longitudinal fasciculus (SLF). Advanced tractography methods have recently allowed the separation of the three branches of the SLF but are not suitable for their functional investigation. In order to gather comprehensive information about the functional organisation of these fronto-parietal connections, we used an innovative method, which combined tractography of the SLF in the largest dataset so far (129 participants) with 14 meta-analyses of functional magnetic resonance imaging (fMRI) studies. We found that frontal and parietal functions can be clustered into a dorsal spatial/motor network associated with the SLF I, and a ventral non-spatial/motor network associated with the SLF III. Further, all the investigated functions activated a middle network mostly associated with the SLF II. Our findings suggest that dorsal and ventral fronto-parietal networks are segregated but also share regions of activation, which may support flexible response properties or conscious processing. In sum, our novel combined approach provided novel findings on the functional organisation of fronto-parietal networks, and may be successfully applied to other brain connections. We used a novel approach to investigate fronto-parietal functions. These are segregated into a dorsal spatial and a ventral non-spatial network. These networks rely on the superior longitudinal fasciculus (1st and 3rd branch). They overlap on areas with flexible response properties that rely on the 2nd branch.
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Affiliation(s)
- Valeria Parlatini
- Sackler Institute of Translational Neurodevelopment, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; Natbrainlab, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK.
| | - Joaquim Radua
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; FIDMAG Germanes Hospitalàries, CIBERSAM, Sant Boi de Llobregat 08035, Spain
| | - Flavio Dell'Acqua
- Natbrainlab, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; NIHR Biomedical Research Centre for Mental Health at South London and Maudsley NHS Foundation Trust and King's College London, Institute of Psychiatry, SE5 8AF London, UK
| | - Anoushka Leslie
- Natbrainlab, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; NIHR Biomedical Research Centre for Mental Health at South London and Maudsley NHS Foundation Trust and King's College London, Institute of Psychiatry, SE5 8AF London, UK
| | - Andy Simmons
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; NIHR Biomedical Research Centre for Mental Health at South London and Maudsley NHS Foundation Trust and King's College London, Institute of Psychiatry, SE5 8AF London, UK; MRC Centre for Neurodegeneration Research, King's College London, SE5 9RX London, UK
| | - Declan G Murphy
- Sackler Institute of Translational Neurodevelopment, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK
| | - Marco Catani
- Sackler Institute of Translational Neurodevelopment, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; Natbrainlab, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK
| | - Michel Thiebaut de Schotten
- Sackler Institute of Translational Neurodevelopment, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; Natbrainlab, Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF London, UK; Brain Connectivity Behaviour group, FrontLab, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et la moelle (ICM) - Hôpital Pitié-Salpêtrière, Boulevard de l'hôpital, F-75013, Paris, France.
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237
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Herbet G, Moritz-Gasser S, Duffau H. Direct evidence for the contributive role of the right inferior fronto-occipital fasciculus in non-verbal semantic cognition. Brain Struct Funct 2016; 222:1597-1610. [PMID: 27568379 DOI: 10.1007/s00429-016-1294-x] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/17/2016] [Indexed: 11/29/2022]
Abstract
The neural foundations underlying semantic processing have been extensively investigated, highlighting a pivotal role of the ventral stream. However, although studies concerning the involvement of the left ventral route in verbal semantics are proficient, the potential implication of the right ventral pathway in non-verbal semantics has been to date unexplored. To gain insights on this matter, we used an intraoperative direct electrostimulation to map the structures mediating the non-verbal semantic system in the right hemisphere. Thirteen patients presenting with a right low-grade glioma located within or close to the ventral stream were included. During the 'awake' procedure, patients performed both a visual non-verbal semantic task and a verbal (control) task. At the cortical level, in the right hemisphere, we found non-verbal semantic-related sites (n = 7 in 6 patients) in structures commonly associated with verbal semantic processes in the left hemisphere, including the superior temporal gyrus, the pars triangularis, and the dorsolateral prefrontal cortex. At the subcortical level, we found non-verbal semantic-related sites in all but one patient (n = 15 sites in 12 patients). Importantly, all these responsive stimulation points were located on the spatial course of the right inferior fronto-occipital fasciculus (IFOF). These findings provide direct support for a critical role of the right IFOF in non-verbal semantic processing. Based upon these original data, and in connection with previous findings showing the involvement of the left IFOF in non-verbal semantic processing, we hypothesize the existence of a bilateral network underpinning the non-verbal semantic system, with a homotopic connectional architecture.
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Affiliation(s)
- Guillaume Herbet
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, 80 Avenue Augustin Fliche, 34295, Montpellier, France. .,National Institute for Health and Medical Research (INSERM), U1051, Team "Plasticity of the Central Nervous System, Human Stem Cells and Glial Tumors", Institute for Neurosciences of Montpellier, Montpellier University Medical Center, 80 Av Augustin Fliche, 34091, Montpellier, France. .,University of Montpellier, 163 rue Auguste Broussonnet, 34090, Montpellier, France.
| | - Sylvie Moritz-Gasser
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, 80 Avenue Augustin Fliche, 34295, Montpellier, France.,National Institute for Health and Medical Research (INSERM), U1051, Team "Plasticity of the Central Nervous System, Human Stem Cells and Glial Tumors", Institute for Neurosciences of Montpellier, Montpellier University Medical Center, 80 Av Augustin Fliche, 34091, Montpellier, France.,University of Montpellier, 163 rue Auguste Broussonnet, 34090, Montpellier, France
| | - Hugues Duffau
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, 80 Avenue Augustin Fliche, 34295, Montpellier, France.,National Institute for Health and Medical Research (INSERM), U1051, Team "Plasticity of the Central Nervous System, Human Stem Cells and Glial Tumors", Institute for Neurosciences of Montpellier, Montpellier University Medical Center, 80 Av Augustin Fliche, 34091, Montpellier, France.,University of Montpellier, 163 rue Auguste Broussonnet, 34090, Montpellier, France
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238
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De Benedictis A, Petit L, Descoteaux M, Marras CE, Barbareschi M, Corsini F, Dallabona M, Chioffi F, Sarubbo S. New insights in the homotopic and heterotopic connectivity of the frontal portion of the human corpus callosum revealed by microdissection and diffusion tractography. Hum Brain Mapp 2016; 37:4718-4735. [PMID: 27500966 DOI: 10.1002/hbm.23339] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 06/12/2016] [Accepted: 07/26/2016] [Indexed: 12/16/2022] Open
Abstract
Extensive studies revealed that the human corpus callosum (CC) plays a crucial role in providing large-scale bi-hemispheric integration of sensory, motor and cognitive processing, especially within the frontal lobe. However, the literature lacks of conclusive data regarding the structural macroscopic connectivity of the frontal CC. In this study, a novel microdissection approach was adopted, to expose the frontal fibers of CC from the dorsum to the lateral cortex in eight hemispheres and in one entire brain. Post-mortem results were then combined with data from advanced constrained spherical deconvolution in 130 healthy subjects. We demonstrated as the frontal CC provides dense inter-hemispheric connections. In particular, we found three types of fronto-callosal fibers, having a dorso-ventral organization. First, the dorso-medial CC fibers subserve homotopic connections between the homologous medial cortices of the superior frontal gyrus. Second, the ventro-lateral CC fibers subserve homotopic connections between lateral frontal cortices, including both the middle frontal gyrus and the inferior frontal gyrus, as well as heterotopic connections between the medial and lateral frontal cortices. Third, the ventro-striatal CC fibers connect the medial and lateral frontal cortices with the contralateral putamen and caudate nucleus. We also highlighted an intricate crossing of CC fibers with the main association pathways terminating in the lateral regions of the frontal lobes. This combined approach of ex vivo microdissection and in vivo diffusion tractography allowed demonstrating a previously unappreciated three-dimensional architecture of the anterior frontal CC, thus clarifying the functional role of the CC in mediating the inter-hemispheric connectivity. Hum Brain Mapp 37:4718-4735, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Alessandro De Benedictis
- Department of Neuroscience and Neurorehabilitation, Neurosurgery Unit, Bambino Gesù Children's Hospital - IRCCS, 4 Piazza Sant'Onofrio, Roma, 00165, Italy
| | - Laurent Petit
- Groupe D'Imagerie Neurofonctionnelle, Institut Des Maladies Neurodégénératives - UMR 5293, CNRS, CEA University of Bordeaux, Bordeaux, France
| | - Maxime Descoteaux
- Sherbrooke Connectivity Imaging Lab, University of Sherbrooke, Sherbrooke, Québec, Canada
| | - Carlo Efisio Marras
- Department of Neuroscience and Neurorehabilitation, Neurosurgery Unit, Bambino Gesù Children's Hospital - IRCCS, 4 Piazza Sant'Onofrio, Roma, 00165, Italy
| | - Mattia Barbareschi
- Department of Histopathology, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy
| | - Francesco Corsini
- Department of Neurosciences, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy.,Structural and Functional Connectivity Lab, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy
| | - Monica Dallabona
- Department of Neurosciences, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy.,Structural and Functional Connectivity Lab, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy
| | - Franco Chioffi
- Department of Neurosciences, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy.,Structural and Functional Connectivity Lab, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy
| | - Silvio Sarubbo
- Department of Neurosciences, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy.,Structural and Functional Connectivity Lab, Division of Neurosurgery, "S. Chiara" Hospital, Trento APSS - 9 Largo Medaglie D'Oro, Trento, 38122, Italy
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239
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Klein E, Willmes K, Jung S, Huber S, Braga LW, Moeller K. Differing Connectivity of Exner's Area for Numbers and Letters. Front Hum Neurosci 2016; 10:281. [PMID: 27378882 PMCID: PMC4909732 DOI: 10.3389/fnhum.2016.00281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/25/2016] [Indexed: 11/23/2022] Open
Abstract
There is a growing body of evidence indicating a crucial role of Exner’s area in (hand-) writing symbolic codes such as letters and words. However, a recent study reported a patient with a lesion affecting Broca’s and Exner’s area, who suffered from severe peripheral agraphia for letters but not for Arabic digits. The authors suggested a speculative account postulating differential connectivity of Exner’s area for numbers and letters in order to explain this dissociation. In the present study, we evaluated this account, employing atlas-based tractography for the patient’s anatomy, deterministic fiber-tracking as well as an automated toolkit to investigate the connectivity of Exner’s area in healthy adults. In particular, fiber pathways connecting Exner’s area with areas associated with language processing (e.g., the arcuate fascicle, ventral pathways encompassing the external/extreme capsule system) reached the inferior part of Exner’s area, while fronto-parietal fibers (e.g., the superior longitudinal fascicle) connected the upper part of Exner’s area with the intraparietal sulcus typically involved in number processing. Our results substantiated the differential connectivity account for Exner’s area by identifying the neural connections between fiber tracts and cortex areas of interest. Our data strongly suggest that white matter connectivity should be taken into account when investigating the neural underpinnings of impaired and intact human cognition.
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Affiliation(s)
- Elise Klein
- Leibniz-Institut für Wissensmedien Tuebingen, Germany
| | - Klaus Willmes
- Department of Neurology, Section Neuropsychology, University Hospital, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University Tuebingen, Germany
| | - Stefanie Jung
- Leibniz-Institut für WissensmedienTuebingen, Germany; Department of Psychology, Eberhard Karls UniversityTuebingen, Germany
| | - Stefan Huber
- Leibniz-Institut für Wissensmedien Tuebingen, Germany
| | | | - Korbinian Moeller
- Leibniz-Institut für WissensmedienTuebingen, Germany; Department of Psychology, Eberhard Karls UniversityTuebingen, Germany; LEAD Graduate School, Eberhard Karls UniversityTuebingen, Germany
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240
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Amemiya K, Naito E. Importance of human right inferior frontoparietal network connected by inferior branch of superior longitudinal fasciculus tract in corporeal awareness of kinesthetic illusory movement. Cortex 2016; 78:15-30. [DOI: 10.1016/j.cortex.2016.01.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 12/14/2015] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
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241
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Halai AD, Woollams AM, Lambon Ralph MA. Using principal component analysis to capture individual differences within a unified neuropsychological model of chronic post-stroke aphasia: Revealing the unique neural correlates of speech fluency, phonology and semantics. Cortex 2016; 86:275-289. [PMID: 27216359 PMCID: PMC5264368 DOI: 10.1016/j.cortex.2016.04.016] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 12/16/2022]
Abstract
Individual differences in the performance profiles of neuropsychologically-impaired patients are pervasive yet there is still no resolution on the best way to model and account for the variation in their behavioural impairments and the associated neural correlates. To date, researchers have generally taken one of three different approaches: a single-case study methodology in which each case is considered separately; a case-series design in which all individual patients from a small coherent group are examined and directly compared; or, group studies, in which a sample of cases are investigated as one group with the assumption that they are drawn from a homogenous category and that performance differences are of no interest. In recent research, we have developed a complementary alternative through the use of principal component analysis (PCA) of individual data from large patient cohorts. This data-driven approach not only generates a single unified model for the group as a whole (expressed in terms of the emergent principal components) but is also able to capture the individual differences between patients (in terms of their relative positions along the principal behavioural axes). We demonstrate the use of this approach by considering speech fluency, phonology and semantics in aphasia diagnosis and classification, as well as their unique neural correlates. PCA of the behavioural data from 31 patients with chronic post-stroke aphasia resulted in four statistically-independent behavioural components reflecting phonological, semantic, executive-cognitive and fluency abilities. Even after accounting for lesion volume, entering the four behavioural components simultaneously into a voxel-based correlational methodology (VBCM) analysis revealed that speech fluency (speech quanta) was uniquely correlated with left motor cortex and underlying white matter (including the anterior section of the arcuate fasciculus and the frontal aslant tract), phonological skills with regions in the superior temporal gyrus and pars opercularis, and semantics with the anterior temporal stem.
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Affiliation(s)
- Ajay D Halai
- Neuroscience and Aphasia Research Unit, University of Manchester, UK.
| | - Anna M Woollams
- Neuroscience and Aphasia Research Unit, University of Manchester, UK
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242
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Reasoning by analogy requires the left frontal pole: lesion-deficit mapping and clinical implications. Brain 2016; 139:1783-99. [DOI: 10.1093/brain/aww072] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 02/19/2016] [Indexed: 01/06/2023] Open
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243
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Hobeika L, Diard-Detoeuf C, Garcin B, Levy R, Volle E. General and specialized brain correlates for analogical reasoning: A meta-analysis of functional imaging studies. Hum Brain Mapp 2016; 37:1953-69. [PMID: 27012301 DOI: 10.1002/hbm.23149] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 01/12/2016] [Accepted: 02/09/2016] [Indexed: 01/04/2023] Open
Abstract
Reasoning by analogy allows us to link distinct domains of knowledge and to transfer solutions from one domain to another. Analogical reasoning has been studied using various tasks that have generally required the consideration of the relationships between objects and their integration to infer an analogy schema. However, these tasks varied in terms of the level and the nature of the relationships to consider (e.g., semantic, visuospatial). The aim of this study was to identify the cerebral network involved in analogical reasoning and its specialization based on the domains of information and task specificity. We conducted a coordinate-based meta-analysis of 27 experiments that used analogical reasoning tasks. The left rostrolateral prefrontal cortex was one of the regions most consistently activated across the studies. A comparison between semantic and visuospatial analogy tasks showed both domain-oriented regions in the inferior and middle frontal gyri and a domain-general region, the left rostrolateral prefrontal cortex, which was specialized for analogy tasks. A comparison of visuospatial analogy to matrix problem tasks revealed that these two relational reasoning tasks engage, at least in part, distinct right and left cerebral networks, particularly separate areas within the left rostrolateral prefrontal cortex. These findings highlight several cognitive and cerebral differences between relational reasoning tasks that can allow us to make predictions about the respective roles of distinct brain regions or networks. These results also provide new, testable anatomical hypotheses about reasoning disorders that are induced by brain damage. Hum Brain Mapp 37:1953-1969, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Lucie Hobeika
- Inserm, U 1127, Paris, 75013, France.,CNRS UMR 7225, Paris, 75013, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Paris, 75013, France.,ICM, Frontlab, Paris, 75013, France.,AP-HP, Hôpital De La Salpêtrière, Behavioural Neuropsychiatry Unit, Paris, 75013, France
| | - Capucine Diard-Detoeuf
- Inserm, U 1127, Paris, 75013, France.,CNRS UMR 7225, Paris, 75013, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Paris, 75013, France.,ICM, Frontlab, Paris, 75013, France
| | - Béatrice Garcin
- Inserm, U 1127, Paris, 75013, France.,CNRS UMR 7225, Paris, 75013, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Paris, 75013, France.,ICM, Frontlab, Paris, 75013, France
| | - Richard Levy
- Inserm, U 1127, Paris, 75013, France.,CNRS UMR 7225, Paris, 75013, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Paris, 75013, France.,ICM, Frontlab, Paris, 75013, France.,AP-HP, Hôpital De La Salpêtrière, Behavioural Neuropsychiatry Unit, Paris, 75013, France
| | - Emmanuelle Volle
- Inserm, U 1127, Paris, 75013, France.,CNRS UMR 7225, Paris, 75013, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1127, Paris, 75013, France.,ICM, Frontlab, Paris, 75013, France
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244
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Structural Organization of the Corpus Callosum Predicts Attentional Shifts after Continuous Theta Burst Stimulation. J Neurosci 2016; 35:15353-68. [PMID: 26586822 DOI: 10.1523/jneurosci.2610-15.2015] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
UNLABELLED Repetitive transcranial magnetic stimulation (rTMS) applied over the right posterior parietal cortex (PPC) in healthy participants has been shown to trigger a significant rightward shift in the spatial allocation of visual attention, temporarily mimicking spatial deficits observed in neglect. In contrast, rTMS applied over the left PPC triggers a weaker or null attentional shift. However, large interindividual differences in responses to rTMS have been reported. Studies measuring changes in brain activation suggest that the effects of rTMS may depend on both interhemispheric and intrahemispheric interactions between cortical loci controlling visual attention. Here, we investigated whether variability in the structural organization of human white matter pathways subserving visual attention, as assessed by diffusion magnetic resonance imaging and tractography, could explain interindividual differences in the effects of rTMS. Most participants showed a rightward shift in the allocation of spatial attention after rTMS over the right intraparietal sulcus (IPS), but the size of this effect varied largely across participants. Conversely, rTMS over the left IPS resulted in strikingly opposed individual responses, with some participants responding with rightward and some with leftward attentional shifts. We demonstrate that microstructural and macrostructural variability within the corpus callosum, consistent with differential effects on cross-hemispheric interactions, predicts both the extent and the direction of the response to rTMS. Together, our findings suggest that the corpus callosum may have a dual inhibitory and excitatory function in maintaining the interhemispheric dynamics that underlie the allocation of spatial attention. SIGNIFICANCE STATEMENT The posterior parietal cortex (PPC) controls allocation of attention across left versus right visual fields. Damage to this area results in neglect, characterized by a lack of spatial awareness of the side of space contralateral to the brain injury. Transcranial magnetic stimulation over the PPC is used to study cognitive mechanisms of spatial attention and to examine the potential of this technique to treat neglect. However, large individual differences in behavioral responses to stimulation have been reported. We demonstrate that the variability in the structural organization of the corpus callosum accounts for these differences. Our findings suggest novel dual mechanism of the corpus callosum function in spatial attention and have broader implications for the use of stimulation in neglect rehabilitation.
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245
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Ten Brink AF, Biesbroek JM, Kuijf HJ, Van der Stigchel S, Oort Q, Visser-Meily JMA, Nijboer TCW. The right hemisphere is dominant in organization of visual search-A study in stroke patients. Behav Brain Res 2016; 304:71-9. [PMID: 26876010 DOI: 10.1016/j.bbr.2016.02.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 01/14/2016] [Accepted: 02/04/2016] [Indexed: 11/18/2022]
Abstract
Cancellation tasks are widely used for diagnosis of lateralized attentional deficits in stroke patients. A disorganized fashion of target cancellation has been hypothesized to reflect disturbed spatial exploration. In the current study we aimed to examine which lesion locations result in disorganized visual search during cancellation tasks, in order to determine which brain areas are involved in search organization. A computerized shape cancellation task was administered in 78 stroke patients. As an index for search organization, the amount of intersections of paths between consecutive crossed targets was computed (i.e., intersections rate). This measure is known to accurately depict disorganized visual search in a stroke population. Ischemic lesions were delineated on CT or MRI images. Assumption-free voxel-based lesion-symptom mapping and region of interest-based analyses were used to determine the grey and white matter anatomical correlates of the intersections rate as a continuous measure. The right lateral occipital cortex, superior parietal lobule, postcentral gyrus, superior temporal gyrus, middle temporal gyrus, supramarginal gyrus, inferior longitudinal fasciculus, first branch of the superior longitudinal fasciculus (SLF I), and the inferior fronto-occipital fasciculus, were related to search organization. To conclude, a clear right hemispheric dominance for search organization was revealed. Further, the correlates of disorganized search overlap with regions that have previously been associated with conjunctive search and spatial working memory. This suggests that disorganized visual search is caused by disturbed spatial processes, rather than deficits in high level executive function or planning, which would be expected to be more related to frontal regions.
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Affiliation(s)
- Antonia F Ten Brink
- Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Utrecht, The Netherlands
| | - J Matthijs Biesbroek
- Department of Neurology, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Hugo J Kuijf
- Image Sciences Institute, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Stefan Van der Stigchel
- Department of Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
| | - Quirien Oort
- Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Utrecht, The Netherlands
| | - Johanna M A Visser-Meily
- Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Utrecht, The Netherlands
| | - Tanja C W Nijboer
- Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Utrecht, The Netherlands; Department of Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands.
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246
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Herbet G, Maheu M, Costi E, Lafargue G, Duffau H. Mapping neuroplastic potential in brain-damaged patients. Brain 2016; 139:829-44. [PMID: 26912646 DOI: 10.1093/brain/awv394] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 11/24/2015] [Indexed: 11/14/2022] Open
Abstract
It is increasingly acknowledged that the brain is highly plastic. However, the anatomic factors governing the potential for neuroplasticity have hardly been investigated. To bridge this knowledge gap, we generated a probabilistic atlas of functional plasticity derived from both anatomic magnetic resonance imaging results and intraoperative mapping data on 231 patients having undergone surgery for diffuse, low-grade glioma. The atlas includes detailed level of confidence information and is supplemented with a series of comprehensive, connectivity-based cluster analyses. Our results show that cortical plasticity is generally high in the cortex (except in primary unimodal areas and in a small set of neural hubs) and rather low in connective tracts (especially associative and projection tracts). The atlas sheds new light on the topological organization of critical neural systems and may also be useful in predicting the likelihood of recovery (as a function of lesion topology) in various neuropathological conditions-a crucial factor in improving the care of brain-damaged patients.
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Affiliation(s)
- Guillaume Herbet
- 1 Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295 Montpellier, France 2 Institute for Neuroscience of Montpellier, INSERM U1051 (Plasticity of Central Nervous System, Human Stem Cells and Glial Tumors research group), Saint Eloi Hospital, Montpellier University Medical Center, F-34091 Montpellier, France
| | - Maxime Maheu
- 3 Départements d'Etudes Cognitives, Ecole Normale Supérieure, F-75005 Paris, France 4 Faculté des Sciences Fondamentales et Biomédicales, Université Paris Descartes, F-75006 Paris, France
| | - Emanuele Costi
- 5 Department of Neuroscience, Division of Neurosurgery, University of Brescia, Brescia, Italy
| | - Gilles Lafargue
- 6 Univ. Lille, EA 4072 - PSITEC - Psychologie: Interactions, Temps, Émotions, Cognition, F-59000 Lille, France
| | - Hugues Duffau
- 1 Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, F-34295 Montpellier, France 2 Institute for Neuroscience of Montpellier, INSERM U1051 (Plasticity of Central Nervous System, Human Stem Cells and Glial Tumors research group), Saint Eloi Hospital, Montpellier University Medical Center, F-34091 Montpellier, France
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247
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The white matter query language: a novel approach for describing human white matter anatomy. Brain Struct Funct 2016; 221:4705-4721. [PMID: 26754839 DOI: 10.1007/s00429-015-1179-4] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 12/19/2015] [Indexed: 10/22/2022]
Abstract
We have developed a novel method to describe human white matter anatomy using an approach that is both intuitive and simple to use, and which automatically extracts white matter tracts from diffusion MRI volumes. Further, our method simplifies the quantification and statistical analysis of white matter tracts on large diffusion MRI databases. This work reflects the careful syntactical definition of major white matter fiber tracts in the human brain based on a neuroanatomist's expert knowledge. The framework is based on a novel query language with a near-to-English textual syntax. This query language makes it possible to construct a dictionary of anatomical definitions that describe white matter tracts. The definitions include adjacent gray and white matter regions, and rules for spatial relations. This novel method makes it possible to automatically label white matter anatomy across subjects. After describing this method, we provide an example of its implementation where we encode anatomical knowledge in human white matter for ten association and 15 projection tracts per hemisphere, along with seven commissural tracts. Importantly, this novel method is comparable in accuracy to manual labeling. Finally, we present results applying this method to create a white matter atlas from 77 healthy subjects, and we use this atlas in a small proof-of-concept study to detect changes in association tracts that characterize schizophrenia.
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248
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Thiebaut de Schotten M, Dell'Acqua F, Ratiu P, Leslie A, Howells H, Cabanis E, Iba-Zizen MT, Plaisant O, Simmons A, Dronkers NF, Corkin S, Catani M. From Phineas Gage and Monsieur Leborgne to H.M.: Revisiting Disconnection Syndromes. Cereb Cortex 2015; 25:4812-27. [PMID: 26271113 PMCID: PMC4635921 DOI: 10.1093/cercor/bhv173] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
On the 50th anniversary of Norman Geschwind's seminal paper entitled ‘Disconnexion syndrome in animal and man’, we pay tribute to his ideas by applying contemporary tractography methods to understand white matter disconnection in 3 classic cases that made history in behavioral neurology. We first documented the locus and extent of the brain lesion from the computerized tomography of Phineas Gage's skull and the magnetic resonance images of Louis Victor Leborgne's brain, Broca's first patient, and Henry Gustave Molaison. We then applied the reconstructed lesions to an atlas of white matter connections obtained from diffusion tractography of 129 healthy adults. Our results showed that in all 3 patients, disruption extended to connections projecting to areas distant from the lesion. We confirmed that the damaged tracts link areas that in contemporary neuroscience are considered functionally engaged for tasks related to emotion and decision-making (Gage), language production (Leborgne), and declarative memory (Molaison). Our findings suggest that even historic cases should be reappraised within a disconnection framework whose principles were plainly established by the associationist schools in the last 2 centuries.
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Affiliation(s)
- M Thiebaut de Schotten
- Natbrainlab, Department of FANS, Institute of Psychiatry, Psychology and Neuroscience and Brain Connectivity and Behaviour, Brain and Spine Institute, Paris, France Inserm U 1127; UPMC-Paris6, UMR_S 1127; CNRS UMR 7225, CRICM, GH Pitié-Salpêtrière, 75013 Paris, France
| | - F Dell'Acqua
- Natbrainlab, Department of FANS, Institute of Psychiatry, Psychology and Neuroscience and Department of Neuroimaging, Institute of Psychiatry, King's College London, London, UK
| | - P Ratiu
- Natbrainlab, Department of FANS, Institute of Psychiatry, Psychology and Neuroscience and
| | - A Leslie
- Natbrainlab, Department of FANS, Institute of Psychiatry, Psychology and Neuroscience and Department of Neuroimaging, Institute of Psychiatry, King's College London, London, UK
| | - H Howells
- Natbrainlab, Department of FANS, Institute of Psychiatry, Psychology and Neuroscience and Department of Neuroimaging, Institute of Psychiatry, King's College London, London, UK
| | - E Cabanis
- Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris, France
| | - M T Iba-Zizen
- Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris, France
| | - O Plaisant
- University of Paris-Descartes, GH Pitié-Salpêtrière, URDIA, EA4465, Paris, France
| | - A Simmons
- Department of Neuroimaging, Institute of Psychiatry, King's College London, London, UK
| | - N F Dronkers
- VA Northern California Health Care System, Martinez, CA, USA Department of Neurology, University of California, Davis, CA, USA National Research University Higher School of Economics, Russian Federation
| | - S Corkin
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - M Catani
- Natbrainlab, Department of FANS, Institute of Psychiatry, Psychology and Neuroscience and Department of Neuroimaging, Institute of Psychiatry, King's College London, London, UK
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