1
|
Coolen T, Mihai Dumitrescu A, Wens V, Bourguignon M, Rovai A, Sadeghi N, Urbain C, Goldman S, De Tiège X. Spectrotemporal cortical dynamics and semantic control during sentence completion. Clin Neurophysiol 2024; 163:90-101. [PMID: 38714152 DOI: 10.1016/j.clinph.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/27/2024] [Accepted: 04/14/2024] [Indexed: 05/09/2024]
Abstract
OBJECTIVE To investigate cortical oscillations during a sentence completion task (SC) using magnetoencephalography (MEG), focusing on the semantic control network (SCN), its leftward asymmetry, and the effects of semantic control load. METHODS Twenty right-handed adults underwent MEG while performing SC, consisting of low cloze (LC: multiple responses) and high cloze (HC: single response) stimuli. Spectrotemporal power modulations as event-related synchronizations (ERS) and desynchronizations (ERD) were analyzed: first, at the whole-brain level; second, in key SCN regions, posterior middle/inferior temporal gyri (pMTG/ITG) and inferior frontal gyri (IFG), under different semantic control loads. RESULTS Three cortical response patterns emerged: early (0-200 ms) theta-band occipital ERS; intermediate (200-700 ms) semantic network alpha/beta-band ERD; late (700-3000 ms) dorsal language stream alpha/beta/gamma-band ERD. Under high semantic control load (LC), pMTG/ITG showed prolonged left-sided engagement (ERD) and right-sided inhibition (ERS). Left IFG exhibited heightened late (2500-2550 ms) beta-band ERD with increased semantic control load (LC vs. HC). CONCLUSIONS SC involves distinct cortical responses and depends on the left IFG and asymmetric engagement of the pMTG/ITG for semantic control. SIGNIFICANCE Future use of SC in neuromagnetic preoperative language mapping and for understanding the pathophysiology of language disorders in neurological conditions.
Collapse
Affiliation(s)
- Tim Coolen
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium; Université Libre de Bruxelles, Hôpital Universitaire de Bruxelles (HUB), CUB Hôpital Erasme, Department of Radiology, Brussels, Belgium.
| | - Alexandru Mihai Dumitrescu
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium
| | - Vincent Wens
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium
| | - Mathieu Bourguignon
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium; Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratory of Neurophysiology and Movement Biomechanics, Brussels, Belgium
| | - Antonin Rovai
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium
| | - Niloufar Sadeghi
- Université Libre de Bruxelles, Hôpital Universitaire de Bruxelles (HUB), CUB Hôpital Erasme, Department of Radiology, Brussels, Belgium
| | - Charline Urbain
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium; Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Centre for Research in Cognition and Neurosciences (CRCN), Neuropsychology and Functional Neuroimaging Research Unit (UR2NF), Brussels, Belgium
| | - Serge Goldman
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium
| | - Xavier De Tiège
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute (UNI), Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles (LN(2)T), Brussels, Belgium
| |
Collapse
|
2
|
Borne A, Perrone-Bertolotti M, Ferrand-Sorbets S, Bulteau C, Baciu M. Insights on cognitive reorganization after hemispherectomy in Rasmussen's encephalitis. A narrative review. Rev Neurosci 2024; 0:revneuro-2024-0009. [PMID: 38749928 DOI: 10.1515/revneuro-2024-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/26/2024] [Indexed: 05/24/2024]
Abstract
Rasmussen's encephalitis is a rare neurological pathology affecting one cerebral hemisphere, therefore, posing unique challenges. Patients may undergo hemispherectomy, a surgical procedure after which cognitive development occurs in the isolated contralateral hemisphere. This rare situation provides an excellent opportunity to evaluate brain plasticity and cognitive recovery at a hemispheric level. This literature review synthesizes the existing body of research on cognitive recovery following hemispherectomy in Rasmussen patients, considering cognitive domains and modulatory factors that influence cognitive outcomes. While language function has traditionally been the focus of postoperative assessments, there is a growing acknowledgment of the need to broaden the scope of language investigation in interaction with other cognitive domains and to consider cognitive scaffolding in development and recovery. By synthesizing findings reported in the literature, we delineate how language functions may find support from the right hemisphere after left hemispherectomy, but also how, beyond language, global cognitive functioning is affected. We highlight the critical influence of several factors on postoperative cognitive outcomes, including the timing of hemispherectomy and the baseline preoperative cognitive status, pointing to early surgical intervention as predictive of better cognitive outcomes. However, further specific studies are needed to confirm this correlation. This review aims to emphasize a better understanding of mechanisms underlying hemispheric specialization and plasticity in humans, which are particularly important for both clinical and research advancements. This narrative review underscores the need for an integrative approach based on cognitive scaffolding to provide a comprehensive understanding of mechanisms underlying the reorganization in Rasmussen patients after hemispherectomy.
Collapse
Affiliation(s)
- Anna Borne
- Univ. Grenoble Alpes, CNRS, LPNC, 38000 Grenoble, France
| | | | - Sarah Ferrand-Sorbets
- Hôpital Fondation Adolphe de Rothschild, Service de Neurochirurgie Pédiatrique, 75019 Paris, France
| | - Christine Bulteau
- Hôpital Fondation Adolphe de Rothschild, Service de Neurochirurgie Pédiatrique, 75019 Paris, France
- Université de Paris-Cité, MC2Lab EA 7536, Institut de Psychologie, F-92100 Boulogne-Billancourt, France
| | - Monica Baciu
- Univ. Grenoble Alpes, CNRS, LPNC, 38000 Grenoble, France
- Neurology Department, CMRR, University Hospital, 38000 Grenoble, France
| |
Collapse
|
3
|
Astrakas LG. Challenging the supremacy of fMRI in assessing language lateralization. Eur Radiol 2023; 33:6079-6080. [PMID: 37420102 DOI: 10.1007/s00330-023-09868-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/04/2023] [Accepted: 04/08/2023] [Indexed: 07/09/2023]
Affiliation(s)
- Loukas G Astrakas
- Medical Physics Laboratory, Faculty of Medicine, University of Ioannina, Ioannina, Greece.
| |
Collapse
|
4
|
Zong F, You Z, Zhou L, Deng X. Language function of the superior longitudinal fasciculus in patients with arteriovenous malformation as evidenced by automatic fiber quantification. FRONTIERS IN RADIOLOGY 2023; 3:1121879. [PMID: 37492384 PMCID: PMC10365120 DOI: 10.3389/fradi.2023.1121879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 05/03/2023] [Indexed: 07/27/2023]
Abstract
The superior longitudinal fasciculus (SLF) is a major fiber tract involved in language processing and has been used to investigate language impairments and plasticity in many neurological diseases. The SLF is divided into four main branches that connect with different cortex regions, with two branches (SLF II, SLF III) being directly related to language. However, most white matter analyses consider the SLF as a single bundle, which may underestimate the relationship between these fiber bundles and language function. In this study, we investigated the differences between branches of the SLF in patients with arteriovenous malformation (AVM), which is a unique model to investigate language reorganization. We analyzed diffusion tensor imaging data of AVM patients and healthy controls to generate whole-brain fiber tractography, and then segmented the SLF into SLF II and III based on their distinctive waypoint regions. The SLF, SLF II, and III were further quantified, and four diffusion parameters of three branches were compared between the AVMs and controls. No significant diffusivity differences of the whole SLF were observed between two groups, however, the right SLF II and III in AVMs showed significant reorganization or impairment patterns as compared to the controls. Results demonstrating the need to subtracting SLF branches when studying structure-function relationship in neurological diseases that have SLF damage.
Collapse
Affiliation(s)
- Fangrong Zong
- School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, China
| | - Zhaoyi You
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Leqing Zhou
- School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, China
| | - Xiaofeng Deng
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| |
Collapse
|
5
|
Piccirilli E, Sestieri C, Di Clemente L, Delli Pizzi A, Colasurdo M, Panara V, Caulo M. The effect of different brain lesions on the reorganization of language functions within the dominant hemisphere assessed with task-based BOLD-fMRI. LA RADIOLOGIA MEDICA 2023:10.1007/s11547-023-01642-5. [PMID: 37184809 DOI: 10.1007/s11547-023-01642-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 04/26/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND AND PURPOSE Language reorganization has been described in brain lesions with respect to their location and timing, but little is known with respect to their etiology. We used fMRI to investigate the effects of different types of left hemisphere lesions (GL = gliomas, TLE = temporal lobe epilepsy and CA = cavernous angioma) on the topographic intra-hemispheric language plasticity, also considering their location. METHODS Forty-seven right-handed patients with 3 different left hemisphere lesions (16 GL, 15 TLE and 16 CA) and 17 healthy controls underwent BOLD fMRI with a verb-generation task. Euclidean distance was used to measure activation peak shifts among groups with respect to reference Tailarach coordinates of Inferior Frontal Gyrus, Superior Temporal Sulcus and Temporo-Parietal Junction. Mixed-model ANOVAs were used to test for differences in activation peak shifts. RESULTS Significant activation peak shifts were found in GL patients with respect both to HC and other groups (TLA and CA). In addition, in the same group of patients a significant effect of tumor location (anterior or posterior) was detected. CONCLUSIONS We demonstrated that intra-hemispheric language plasticity is influenced by the type of lesion affecting the left hemisphere and that fMRI is especially valuable in the preoperative assessment of such reorganization in glioma patients.
Collapse
Affiliation(s)
- Eleonora Piccirilli
- Department of Neuroscience, Imaging and Clinical Sciences (DNISC), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, 66100, Chieti, Italy
- Institute for Advanced Biomedical Technologies (ITAB), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, Chieti, Italy
- Department of Imaging, Ospedale Pediatrico Bambino Gesù, IRCSS, Rome, Italy
| | - Carlo Sestieri
- Department of Neuroscience, Imaging and Clinical Sciences (DNISC), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, 66100, Chieti, Italy
- Institute for Advanced Biomedical Technologies (ITAB), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, Chieti, Italy
| | - Loris Di Clemente
- Institute for Advanced Biomedical Technologies (ITAB), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, Chieti, Italy
| | - Andrea Delli Pizzi
- Department of Innovative Technologies in Medicine and Dentistry, Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, Chieti, Italy
- Department of Radiology, SS. Annunziata University Hospital, Chieti, Italy
| | - Marco Colasurdo
- Department of Radiology, SS. Annunziata University Hospital, Chieti, Italy
| | - Valentina Panara
- Institute for Advanced Biomedical Technologies (ITAB), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, Chieti, Italy
- Department of Radiology, SS. Annunziata University Hospital, Chieti, Italy
| | - Massimo Caulo
- Department of Neuroscience, Imaging and Clinical Sciences (DNISC), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, 66100, Chieti, Italy.
- Institute for Advanced Biomedical Technologies (ITAB), Università Degli Studi Gabriele d'Annunzio Di Chieti Pescara, Chieti, Italy.
- Department of Radiology, SS. Annunziata University Hospital, Chieti, Italy.
| |
Collapse
|
6
|
Li D, Mao M, Zhang X, Hou D, Zhang S, Hao J, Cui X, Niu Y, Xiang J, Wang B. Gender effects on the controllability of hemispheric white matter networks. Cereb Cortex 2023; 33:1643-1658. [PMID: 35483707 DOI: 10.1093/cercor/bhac162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Male and female adults exhibited significant group differences in brain white matter (WM) asymmetry and WM network controllability. However, gender differences in controllability of hemispheric WM networks between males and females remain to be determined. Based on 1 principal atlas and 1 replication atlas, this work characterized the average controllability (AC) and modal controllability (MC) of hemispheric WM network based on 1 principal dataset and 2 replication datasets. All results showed that males had higher AC of left hemispheric networks than females. And significant hemispheric asymmetry was revealed in regional AC and MC. Furthermore, significant gender differences in the AC asymmetry were mainly found in regions lie in the frontoparietal network, and the MC asymmetry was found in regions involving auditory and emotion process. Finally, we found significant associations between regional controllability and cognitive features. Taken together, this work could provide a novel perspective for understanding gender differences in hemispheric WM asymmetry and cognitive function between males and females.
Collapse
Affiliation(s)
- Dandan Li
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Min Mao
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Xi Zhang
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Dianni Hou
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Shanshan Zhang
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Jiangping Hao
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Xiaohong Cui
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Yan Niu
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Jie Xiang
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| | - Bin Wang
- College of Information and Computer, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, Shanxi, 030024, China
| |
Collapse
|
7
|
Intermediate stimulation frequencies for language mapping using Stereo-EEG. Clin Neurophysiol 2022; 144:91-97. [PMID: 36327599 DOI: 10.1016/j.clinph.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 09/27/2022] [Accepted: 10/03/2022] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Identification of eloquent cortices is a prerequisite for the surgical plan but may be challenging, in particular for language areas (LAs), considering the complexity of language function and organization. Electrical intracerebral stimulations (ES) during Stereo-electroencephalography are an essential tool in the localization of LAs and high frequency ES (HFS, 50 Hz) are current gold standard. Low frequencies (1 Hz) are not effective. We aim to investigate different ES frequencies for establishing their utility in localizing LAs. METHODS We implemented an observational and prospective study evaluating frequencies lower than 50 and higher than 1 Hz; indicated as "intermediate" frequencies (IFS) performed at 6, 9 and 12 Hz and lasting 15 seconds. We included ten patients and carried out a standardized protocol comparing IFS to HFS. RESULTS Eighty-six ES were carried out in LAs, positive for a language interference in 61.6% without noteworthy difference between IFS and HFS. Among these, 53.3% IFS vs 21.7% HFS yielded no after-discharge. CONCLUSIONS IFS were similarly effective as HFS, with lower incidence of ADs. Their longer duration facilitated more accurate clinical testing. SIGNIFICANCE Our results are promising, suggesting that IFS can be useful in the study of LAs.
Collapse
|
8
|
Liégeois‐Chauvel C, Dubarry A, Wang I, Chauvel P, Gonzalez‐Martinez JA, Alario F. Inter-individual variability in dorsal stream dynamics during word production. Eur J Neurosci 2022; 56:5070-5089. [PMID: 35997580 PMCID: PMC9804493 DOI: 10.1111/ejn.15807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/10/2022] [Accepted: 08/14/2022] [Indexed: 01/05/2023]
Abstract
The current standard model of language production involves a sensorimotor dorsal stream connecting areas in the temporo-parietal junction with those in the inferior frontal gyrus and lateral premotor cortex. These regions have been linked to various aspects of word production such as phonological processing or articulatory programming, primarily through neuropsychological and functional imaging group studies. Most if not all the theoretical descriptions of this model imply that the same network should be identifiable across individual speakers. We tested this hypothesis by quantifying the variability of activation observed across individuals within each dorsal stream anatomical region. This estimate was based on electrical activity recorded directly from the cerebral cortex with millisecond accuracy in awake epileptic patients clinically implanted with intracerebral depth electrodes for pre-surgical diagnosis. Each region's activity was quantified using two different metrics-intra-cerebral evoked related potentials and high gamma activity-at the level of the group, the individual and the recording contact. The two metrics show simultaneous activation of parietal and frontal regions during a picture naming task, in line with models that posit interactive processing during word retrieval. They also reveal different levels of between-patient variability across brain regions, except in core auditory and motor regions. The independence and non-uniformity of cortical activity estimated through the two metrics push the current model towards sub-second and sub-region explorations focused on individualized language speech production. Several hypotheses are considered for this within-region heterogeneity.
Collapse
Affiliation(s)
- Catherine Liégeois‐Chauvel
- Epilepsy Center, Neurological InstituteCleveland Clinic FoundationClevelandOhioUSA,Aix Marseille Univ, INSERM, INS, Inst Neurosci SystMarseilleFrance,Present address:
Department of Neurological Surgery, School of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | | | - Irene Wang
- Epilepsy Center, Neurological InstituteCleveland Clinic FoundationClevelandOhioUSA
| | | | - Jorge A. Gonzalez‐Martinez
- Present address:
Department of Neurological Surgery, School of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - F.‐Xavier Alario
- Present address:
Department of Neurological Surgery, School of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA,Aix Marseille Univ, CNRS, LPCMarseilleFrance
| |
Collapse
|
9
|
Leveraging manifold learning techniques to explore white matter anomalies: An application of the TractLearn pipeline in epilepsy. Neuroimage Clin 2022; 36:103209. [PMID: 36162235 PMCID: PMC9668609 DOI: 10.1016/j.nicl.2022.103209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/15/2022] [Accepted: 09/21/2022] [Indexed: 12/14/2022]
Abstract
An accurate description of brain white matter anatomy in vivo remains a challenge. However, technical progress allows us to analyze structural variations in an increasingly sophisticated way. Current methods of processing diffusion MRI data now make it possible to correct some limiting biases. In addition, the development of statistical learning algorithms offers the opportunity to analyze the data from a new perspective. We applied newly developed tractography models to extract quantitative white matter parameters in a group of patients with chronic temporal lobe epilepsy. Furthermore, we implemented a statistical learning workflow optimized for the MRI diffusion data - the TractLearn pipeline - to model inter-individual variability and predict structural changes in patients. Finally, we interpreted white matter abnormalities in the context of several other parameters reflecting clinical status, as well as neuronal and cognitive functioning for these patients. Overall, we show the relevance of such a diffusion data processing pipeline for the evaluation of clinical populations. The "global to fine scale" funnel statistical approach proposed in this study also contributes to the understanding of neuroplasticity mechanisms involved in refractory epilepsy, thus enriching previous findings.
Collapse
|
10
|
Leisman G, Melillo R. Front and center: Maturational dysregulation of frontal lobe functional neuroanatomic connections in attention deficit hyperactivity disorder. Front Neuroanat 2022; 16:936025. [PMID: 36081853 PMCID: PMC9446472 DOI: 10.3389/fnana.2022.936025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/29/2022] [Indexed: 12/21/2022] Open
Abstract
Frontal lobe function may not universally explain all forms of attention deficit hyperactivity disorder (ADHD) but the frontal lobe hypothesis described supports an internally consistent model for integrating the numerous behaviors associated with ADHD. The paper examines the developmental trajectories of frontal and prefrontal lobe development, framing ADHD as maturational dysregulation concluding that the cognitive, motor, and behavioral abilities of the presumptive majority of ADHD children may not primarily be disordered or dysfunctional but reflect maturational dysregulation that is inconsistent with the psychomotor and cognitive expectations for the child’s chronological and mental age. ADHD children demonstrate decreased activation of the right and middle prefrontal cortex. Prefrontal and frontal lobe regions have an exuberant network of shared pathways with the diencephalic region, also having a regulatory function in arousal as well as with the ascending reticular formation which has a capacity for response suppression to task-irrelevant stimuli. Prefrontal lesions oftentimes are associated with the regulatory breakdown of goal-directed activity and impulsivity. In conclusion, a presumptive majority of childhood ADHD may result from maturational dysregulation of the frontal lobes with effects on the direct, indirect and/or, hyperdirect pathways.
Collapse
Affiliation(s)
- Gerry Leisman
- Movement and Cognition Laboratory, Department of Physical Therapy, University of Haifa, Haifa, Israel
- Department of Neurology, University of Medical Sciences of Havana, Havana, Cuba
- *Correspondence: Gerry Leisman,
| | - Robert Melillo
- Movement and Cognition Laboratory, Department of Physical Therapy, University of Haifa, Haifa, Israel
| |
Collapse
|
11
|
Ferreira Furtado LM, Bernardes HM, de Souza Félix Nunes FA, Gonçalves CA, Da Costa Val Filho JA, de Miranda AS. The Role of Neuroplasticity in Improving the Decision-Making Quality of Individuals With Agenesis of the Corpus Callosum: A Systematic Review. Cureus 2022; 14:e26082. [PMID: 35747104 PMCID: PMC9206817 DOI: 10.7759/cureus.26082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2022] [Indexed: 11/29/2022] Open
Abstract
Although individuals with agenesis of corpus callosum (ACC) possess intelligence coefficients within regular parameters, current studies have demonstrated decision-making compromise and potential negative social consequences. Furthermore, alternative pathways regarding brain connectivity in acallosal patients combined with cognitive therapy that would potentially mitigate such difficulties. Therefore, this study aimed to examine the current state of the art regarding brain foundations in the role of neuroplasticity by improving the decision-making quality in ACC. A systematic revision of literature was performed including studies conducted on non-syndromic ACC individuals and analyzing the impact of the potential role of neuroplasticity on the decision-making published to date. Studies with patients who underwent callosotomy were excluded. Experimental studies performed on animal models were included. During this period, 849 studies were identified; among them, 11 were eligible for qualitative analysis. Despite the paucity of evidence on this matter, patients with ACC present considerable decision-making difficulties mainly due to the functional connectivity impairment in the frontal lobes. Moreover, neuroplasticity was characterized by increased anterior commissure width as compared with controls. Notwithstanding, no studies were conducted on cognitive therapists managing this type of disease. Although the reorganization of inter-hemispheric bundles on anterior commissure has demonstrated the main natural neuroanatomic strategy in ACC, further evidence will be needed to clarify whether cognitive stimulus could improve the decision-making quality.
Collapse
|
12
|
Deng X, Wang B, Zong F, Yin H, Yu S, Zhang D, Wang S, Cao Y, Zhao J, Zhang Y. Right-hemispheric language reorganization in patients with brain arteriovenous malformations: A functional magnetic resonance imaging study. Hum Brain Mapp 2021; 42:6014-6027. [PMID: 34582074 PMCID: PMC8596961 DOI: 10.1002/hbm.25666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 08/29/2021] [Accepted: 09/12/2021] [Indexed: 11/09/2022] Open
Abstract
Brain arteriovenous malformation (AVM), a presumed congenital lesion, may involve traditional language areas but usually does not lead to language dysfunction unless it ruptures. The objective of this research was to study right-hemispheric language reorganization patterns in patients with brain AVMs using functional magnetic resonance imaging (fMRI). We prospectively enrolled 30 AVM patients with lesions involving language areas and 32 age- and sex-matched healthy controls. Each subject underwent fMRI during three language tasks: visual synonym judgment, oral word reading, and auditory sentence comprehension. The activation differences between the AVM and control groups were investigated by voxelwise analysis. Lateralization indices (LIs) for the frontal lobe, temporal lobe, and cerebellum were compared between the two groups, respectively. Results suggested that the language functions of AVM patients and controls were all normal. Voxelwise analysis showed no significantly different activations between the two groups in visual synonym judgment and oral word reading tasks. In auditory sentence comprehension task, AVM patients had significantly more activations in the right precentral gyrus (BA 6) and right cerebellar lobule VI (AAL 9042). According to the LI results, the frontal lobe in oral word reading task and the temporal lobe in auditory sentence comprehension task were significantly more right-lateralized in the AVM group. These findings suggest that for patients with AVMs involving language cortex, different language reorganization patterns may develop for different language functions. The recruitment of brain areas in the right cerebral and cerebellar hemispheres may play a compensatory role in the reorganized language network of AVM patients.
Collapse
Affiliation(s)
- Xiaofeng Deng
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Bo Wang
- Hefei Comprehensive National Science Center, Institute of Artificial Intelligence, Hefei, China.,State Key Laboratory of Brain and Cognitive Science, Beijing MRI Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Fangrong Zong
- State Key Laboratory of Brain and Cognitive Science, Beijing MRI Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Hu Yin
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Shaochen Yu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Dong Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Shuo Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Yong Cao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Jizong Zhao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Yan Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| |
Collapse
|
13
|
Abstract
Structural asymmetries in language-related brain regions have long been hypothesized to underlie hemispheric language laterality and variability in language functions. These structural asymmetries have been examined using voxel-level, gross volumetric, and surface area measures of gray matter and white matter. Here we used deformation-based and persistent homology approaches to characterize the three-dimensional topology of brain structure asymmetries within language-related areas that were defined in functional neuroimaging experiments. Persistence diagrams representing the range of values for each spatially unique structural asymmetry were collected within language-related regions of interest across 212 children (mean age (years) = 10.56, range 6.39–16.92; 39% female). These topological data exhibited both leftward and rightward asymmetries within the same language-related regions. Permutation testing demonstrated that age and sex effects were most consistent and pronounced in the superior temporal sulcus, where older children and males had more rightward asymmetries. While, consistent with previous findings, these associations exhibited small effect sizes that were observable because of the relatively large sample. In addition, the density of rightward asymmetry structures in nearly all language-related regions was consistently higher than the density of leftward asymmetric structures. These findings guide the prediction that the topological pattern of structural asymmetries in language-related regions underlies the organization of language.
Collapse
|
14
|
Ferguson L, Miller M, Whiting A, Haut J, Klaas P, Bingaman W, Lachhwani D, Lineweaver TT, Floden D, Busch RM. Cognitive outcomes following frontal lobe resection for treatment of epilepsy in children and adolescents. Epilepsy Behav 2021; 124:108265. [PMID: 34509884 DOI: 10.1016/j.yebeh.2021.108265] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To use reliable change indices (RCIs) developed specifically for pediatric patients with epilepsy to examine cognitive outcomes after frontal lobe resection for pharmacoresistant epilepsy. METHODS Forty-one pediatric patients (25 male, Mage = 10 years) completed comprehensive neuropsychological evaluations before and an average of 6.5 months after frontal lobe resections for treatment of epilepsy. Evaluations included tests of intelligence, attention/working memory, processing speed, language, visuospatial skills, executive function, and episodic memory. Practice effect-adjusted RCIs were used to determine clinically significant postoperative cognitive change. Demographic, disease, and surgical variables were examined to identify factors associated with postoperative cognitive decline or improvement. RESULTS Within each cognitive domain, there was a large proportion of patients (51-84%) who did not exhibit significant cognitive change. In terms of overall cognitive profile, 44% demonstrated improvement in at least one domain and 69% declined in at least one domain. Postoperative cognitive improvement occurred most commonly in the domain of processing speed, whereas postoperative cognitive decline occurred most frequently in the domain of visuospatial skills. Younger age at surgery was associated with cognitive improvement. Older age at seizure onset and higher baseline cognitive performance were associated with cognitive decline. SIGNIFICANCE Approximately 6.5 months after frontal lobe resection, only 15% of our sample showed stable performance across all cognitive domains. Seventeen percent of patients showed improvements without declines, 42% showed declines without improvements, and 27% showed a mix of improvements and declines across different cognitive domains. Age and baseline abilities were associated with postoperative cognitive change on multiple measures. With 1 in 8 children demonstrating postoperative decline across three or more domains, further research is needed to identify factors associated with cognitive decline in order to inform clinical decision-making and patient/family counseling.
Collapse
Affiliation(s)
- Lisa Ferguson
- Epilepsy Center, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - Margaret Miller
- Department of Neurology, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - Alexander Whiting
- Department of Neurosurgery, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - Jennifer Haut
- Department of Pediatrics, Psychology Section, Texas Children's Hospital, 6701 Fannin Street, Suite 1630, Houston, TX 77003, USA.
| | - Patricia Klaas
- Department of Neurology, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - William Bingaman
- Epilepsy Center, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA; Department of Neurosurgery, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - Deepak Lachhwani
- Epilepsy Center, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA; Department of Neurology, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - Tara T Lineweaver
- Department of Psychology, Butler University, 4600 Sunset Avenue, Indianapolis, IN 46208, USA.
| | - Darlene Floden
- Department of Neurology, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA; Center for Neurological Restoration, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | - Robyn M Busch
- Epilepsy Center, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA; Department of Neurology, Neurological Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| |
Collapse
|
15
|
Gerrits R, Verhelst H, Dhollander T, Xiang L, Vingerhoets G. Structural perisylvian asymmetry in naturally occurring atypical language dominance. Brain Struct Funct 2021; 227:573-586. [PMID: 34173870 DOI: 10.1007/s00429-021-02323-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 06/14/2021] [Indexed: 01/15/2023]
Abstract
Functional and anatomical hemispheric asymmetries abound in the neural language system, yet the relationship between them remains elusive. One attractive proposal is that structural interhemispheric differences reflect or even drive functional language laterality. However, studies on structure-function couplings either find that left and right language dominant individuals display similar leftward structural asymmetry or yield inconsistent results. The current study aimed to replicate and extend prior work by comparing structural asymmetries between neurologically healthy left-handers with right hemispheric language dominance (N = 24) and typically lateralized left-handed controls (N = 39). Based on structural MRI data, anatomical measures of six 'language-related' perisylvian structures were derived, including the surface area of five gray matter regions with known language functions and the FDC (combined fiber density and fiber-bundle cross-sectional area) of the arcuate fasciculus. Only the surface area of the pars triangularis and the anterior insula differed significantly between participant groups, being on average leftward asymmetric in those with typical dominance, but right lateralized in volunteers with atypical language specialization. However, these findings did not survive multiple testing correction and the asymmetry of these structures demonstrated much inter-individual variability in either subgroup. By integrating our findings with those reported previously we conclude that while some perisylvian anatomical asymmetries may differ subtly between typical and atypical speech dominants at the group level, they serve as poor participant-specific predictors of hemispheric language specialization.
Collapse
Affiliation(s)
- Robin Gerrits
- Department of Experimental Psychology, Ghent University, Ghent, Belgium.
| | - Helena Verhelst
- Department of Experimental Psychology, Ghent University, Ghent, Belgium
| | - Thijs Dhollander
- Developmental Imaging, Murdoch Children's Research Institute, Melbourne, Australia
| | - Li Xiang
- Centre for Reproductive Health, University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Guy Vingerhoets
- Department of Experimental Psychology, Ghent University, Ghent, Belgium
- Ghent Institute for Functional and Metabolic Imaging (GIfMI), Ghent University, Ghent, Belgium
| |
Collapse
|
16
|
Zickert N, Geuze RH, Beking T, Groothuis TGG. Testing the Darwinian function of lateralization. Does separation of workload between brain hemispheres increase cognitive performance? Neuropsychologia 2021; 159:107884. [PMID: 34090868 DOI: 10.1016/j.neuropsychologia.2021.107884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 04/19/2021] [Accepted: 05/03/2021] [Indexed: 12/23/2022]
Abstract
Brain lateralization is a fundamental aspect of the organization of brain and behavior in the animal kingdom, begging the question about its Darwinian function. We tested the possibility that lateralization enhances cognitive performance in single- and dual-tasks. Previous studies reported mixed results on this topic and only a handful of studies have measured functional brain lateralization and performance independently and simultaneously. We therefore examined a possible positive effect of the strength and direction of lateralization on two demanding cognitive tasks: A visuospatial task (mental rotation MR), and a language task (word generation WG), executed either as a singletask or as dual-task. Participants (n = 72) performed these tasks while their single-task brain lateralization was assessed with functional Transcranial Doppler for both tasks. From these measurements we determined strength and direction of lateralization for both tasks and the individual pattern of lateralization (contralateral or ipsilateral) was derived. These factors, along with sex, were used in a GLM analysis to determine if they predicted the respective performance measure of the tasks. We found that for MR there was a significant medium effect of direction of lateralization on performance with better performance in left-lateralized (atypical) participants (partial eta squared 0.061; p = .039). After correction for outliers, there was a significant effect for strength (p = .049). For the dual-task, there was a significant positive medium effect of strength of lateralization on performance (partial eta squared 0.062; p = .038, respectively) No other association between direction or strength in either tests were found. We conclude that there is no evidence for hemispheric crowding, and that strength of lateralization may be a factor that contributes to the evolutionary selection of functional brain lateralization. Pattern of lateralization does not, explaining the large inter-individual variation in these traits.
Collapse
Affiliation(s)
- Nele Zickert
- University of Groningen, Faculty of Mathematics and Natural Sciences, GELIFES - Groningen Institute for Evolutionary Life Sciences, Groningen, the Netherlands.
| | - Reint H Geuze
- University of Groningen, Faculty of Behavioural and Social Sciences, Department Clinical & Developmental Neuropsychology, Groningen, the Netherlands
| | - Tess Beking
- University of Groningen, Faculty of Behavioural and Social Sciences, Department Clinical & Developmental Neuropsychology, Groningen, the Netherlands
| | - Ton G G Groothuis
- University of Groningen, Faculty of Mathematics and Natural Sciences, GELIFES - Groningen Institute for Evolutionary Life Sciences, Groningen, the Netherlands
| |
Collapse
|
17
|
Hazem SR, Awan M, Lavrador JP, Patel S, Wren HM, Lucena O, Semedo C, Irzan H, Melbourne A, Ourselin S, Shapey J, Kailaya-Vasan A, Gullan R, Ashkan K, Bhangoo R, Vergani F. Middle Frontal Gyrus and Area 55b: Perioperative Mapping and Language Outcomes. Front Neurol 2021; 12:646075. [PMID: 33776898 PMCID: PMC7988187 DOI: 10.3389/fneur.2021.646075] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 01/29/2021] [Indexed: 12/20/2022] Open
Abstract
Background: The simplistic approaches to language circuits are continuously challenged by new findings in brain structure and connectivity. The posterior middle frontal gyrus and area 55b (pFMG/area55b), in particular, has gained a renewed interest in the overall language network. Methods: This is a retrospective single-center cohort study of patients who have undergone awake craniotomy for tumor resection. Navigated transcranial magnetic simulation (nTMS), tractography, and intraoperative findings were correlated with language outcomes. Results: Sixty-five awake craniotomies were performed between 2012 and 2020, and 24 patients were included. nTMS elicited 42 positive responses, 76.2% in the inferior frontal gyrus (IFG), and hesitation was the most common error (71.4%). In the pMFG/area55b, there were seven positive errors (five hesitations and two phonemic errors). This area had the highest positive predictive value (43.0%), negative predictive value (98.3%), sensitivity (50.0%), and specificity (99.0%) among all the frontal gyri. Intraoperatively, there were 33 cortical positive responses—two (6.0%) in the superior frontal gyrus (SFG), 15 (45.5%) in the MFG, and 16 (48.5%) in the IFG. A total of 29 subcortical positive responses were elicited−21 in the deep IFG–MFG gyri and eight in the deep SFG–MFG gyri. The most common errors identified were speech arrest at the cortical level (20 responses−13 in the IFG and seven in the MFG) and anomia at the subcortical level (nine patients—eight in the deep IFG–MFG and one in the deep MFG–SFG). Moreover, 83.3% of patients had a transitory deterioration of language after surgery, mainly in the expressive component (p = 0.03). An increased number of gyri with intraoperative positive responses were related with better preoperative (p = 0.037) and worse postoperative (p = 0.029) outcomes. The involvement of the SFG–MFG subcortical area was related with worse language outcomes (p = 0.037). Positive nTMS mapping in the IFG was associated with a better preoperative language outcome (p = 0.017), relating to a better performance in the expressive component, while positive mapping in the MFG was related to a worse preoperative receptive component of language (p = 0.031). Conclusion: This case series suggests that the posterior middle frontal gyrus, including area 55b, is an important integration cortical hub for both dorsal and ventral streams of language.
Collapse
Affiliation(s)
- Sally Rosario Hazem
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Mariam Awan
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Jose Pedro Lavrador
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Sabina Patel
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Hilary Margaret Wren
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Oeslle Lucena
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Carla Semedo
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.,Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
| | - Hassna Irzan
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.,Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
| | - Andrew Melbourne
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.,Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
| | - Sebastien Ourselin
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Jonathan Shapey
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Ahilan Kailaya-Vasan
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Richard Gullan
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Keyoumars Ashkan
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Ranjeev Bhangoo
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| | - Francesco Vergani
- Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom.,King's Neuro Lab, Department of Neurosurgery, King's College Hospital National Health Service Foundation Trust, London, United Kingdom
| |
Collapse
|
18
|
Gurunandan K, Arnaez-Telleria J, Carreiras M, Paz-Alonso PM. Converging Evidence for Differential Specialization and Plasticity of Language Systems. J Neurosci 2020. [PMID: 33168623 DOI: 10.1523/jneur0sci.0851-20.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Abstract
Functional specialization and plasticity are fundamental organizing principles of the brain. Since the mid-1800s, certain cognitive functions have been known to be lateralized, but the provenance and flexibility of hemispheric specialization remain open questions. Language is a uniquely human phenomenon that requires a delicate balance between neural specialization and plasticity, and language learning offers the perfect window to study these principles in the human brain. In the current study, we conducted two separate functional MRI experiments with language learners (male and female), one cross-sectional and one longitudinal, involving distinct populations and languages, and examined hemispheric lateralization and learning-dependent plasticity of the following three language systems: reading, speech comprehension, and verbal production. A multipronged analytic approach revealed a highly consistent pattern of results across the two experiments, showing (1) that in both native and non-native languages, while language production was left lateralized, lateralization for language comprehension was highly variable across individuals; and (2) that with increasing non-native language proficiency, reading and speech comprehension displayed substantial changes in hemispheric dominance, with languages tending to lateralize to opposite hemispheres, while production showed negligible change and remained left lateralized. These convergent results shed light on the long-standing debate of neural organization of language by establishing robust principles of lateralization and plasticity of the main language systems. Findings further suggest involvement of the sensorimotor systems in language lateralization and its plasticity.SIGNIFICANCE STATEMENT The human brain exhibits a remarkable ability to support a vast variety of languages that may be acquired at different points in the life span. Language is a complex construct involving linguistic as well as visual, auditory, and motor processes. Using functional MRI, we examined hemispheric specialization and learning-dependent plasticity of three language systems-reading, speech comprehension, and verbal production-in cross-sectional and longitudinal experiments in language learners. A multipronged analytic approach revealed converging evidence for striking differences in hemispheric specialization and plasticity among the language systems. The results have major theoretical and practical implications for our understanding of fundamental principles of neural organization of language, language testing and recovery in patients, and language learning in healthy populations.
Collapse
Affiliation(s)
- Kshipra Gurunandan
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
| | - Jaione Arnaez-Telleria
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
| | - Manuel Carreiras
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
- Basque Foundation for Science, 48013 Bilbao, Spain
- Department of Basque Language and Communication, University of the Basque Country, 48015 Bilbao, Spain
| | - Pedro M Paz-Alonso
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
- Basque Foundation for Science, 48013 Bilbao, Spain
| |
Collapse
|
19
|
Relationships of Language Lateralization with Diffusion Tensor Imaging Metrics of Corpus Callosum, Tumor Grade, and Tumors Distance to Language-Eloquent Areas in Glial Neoplasms. J Comput Assist Tomogr 2020; 44:956-968. [PMID: 33196603 DOI: 10.1097/rct.0000000000001103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of the study was to search relationships between language lateralization and corpus callosum (CC) connectivity, tumor grade, and tumors distance to language-eloquent areas in glial neoplasms. MATERIALS AND METHODS The functional magnetic resonance imaging and CC diffusion tensor imaging (DTI) metrics of 42 patients with glial neoplasm were evaluated for relationships of language lateralization (left, right, and bilateral) with CC DTI metrics (tracts number, voxel, volume, length, fractional anisotropy [FA], and apparent diffusion coefficient), tumor grade, and tumors distance to language-eloquent areas and relationships of CC DTI metrics with tumor grade. Kruskal-Wallis, Mann-Whitney U, and χ tests were used. All were repeated in 26 patients with left hemispheric masses. RESULTS In glial masses, language bilateralism was more common than normal population and more pronounced in low grade than high grade. In right lateralism and bilateralism, tumor settlement nearby language-eloquent areas was more common. In the left lateralism, highest CC tract number, higher tumor grade, and more remote tumor settlements were noted. There was no relationship between CC DTI metrics and tumor grade but increase in CC tracts number and FA with increasing tumor grade. CONCLUSIONS Increased bilateralism in glial masses than normal population and in low grade tumors than high grade and increased nearby tumor settlement in right lateralism and bilateralism support interhemispheric reorganization and plasticity. This is more pronounced in low grade because of higher life span. Highest CC tract number, higher tumor grade, and more remote tumor settlement in left lateralized group suggest intact CC integrity with limited hemispheric destruction. Increasing CC tracts number and FA with increasing tumor grade support preserved CC integrity in the shorter life span of high-grade tumors.
Collapse
|
20
|
Converging Evidence for Differential Specialization and Plasticity of Language Systems. J Neurosci 2020; 40:9715-9724. [PMID: 33168623 PMCID: PMC7726546 DOI: 10.1523/jneurosci.0851-20.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 11/23/2022] Open
Abstract
Functional specialization and plasticity are fundamental organizing principles of the brain. Since the mid-1800s, certain cognitive functions have been known to be lateralized, but the provenance and flexibility of hemispheric specialization remain open questions. Language is a uniquely human phenomenon that requires a delicate balance between neural specialization and plasticity, and language learning offers the perfect window to study these principles in the human brain. In the current study, we conducted two separate functional MRI experiments with language learners (male and female), one cross-sectional and one longitudinal, involving distinct populations and languages, and examined hemispheric lateralization and learning-dependent plasticity of the following three language systems: reading, speech comprehension, and verbal production. A multipronged analytic approach revealed a highly consistent pattern of results across the two experiments, showing (1) that in both native and non-native languages, while language production was left lateralized, lateralization for language comprehension was highly variable across individuals; and (2) that with increasing non-native language proficiency, reading and speech comprehension displayed substantial changes in hemispheric dominance, with languages tending to lateralize to opposite hemispheres, while production showed negligible change and remained left lateralized. These convergent results shed light on the long-standing debate of neural organization of language by establishing robust principles of lateralization and plasticity of the main language systems. Findings further suggest involvement of the sensorimotor systems in language lateralization and its plasticity. SIGNIFICANCE STATEMENT The human brain exhibits a remarkable ability to support a vast variety of languages that may be acquired at different points in the life span. Language is a complex construct involving linguistic as well as visual, auditory, and motor processes. Using functional MRI, we examined hemispheric specialization and learning-dependent plasticity of three language systems—reading, speech comprehension, and verbal production—in cross-sectional and longitudinal experiments in language learners. A multipronged analytic approach revealed converging evidence for striking differences in hemispheric specialization and plasticity among the language systems. The results have major theoretical and practical implications for our understanding of fundamental principles of neural organization of language, language testing and recovery in patients, and language learning in healthy populations.
Collapse
|
21
|
Trébuchon A, Liégeois-Chauvel C, Gonzalez-Martinez JA, Alario FX. Contributions of electrophysiology for identifying cortical language systems in patients with epilepsy. Epilepsy Behav 2020; 112:107407. [PMID: 33181892 DOI: 10.1016/j.yebeh.2020.107407] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/10/2020] [Accepted: 08/10/2020] [Indexed: 11/26/2022]
Abstract
A crucial element of the surgical treatment of medically refractory epilepsy is to delineate cortical areas that must be spared in order to avoid clinically relevant neurological and neuropsychological deficits postoperatively. For each patient, this typically necessitates determining the language lateralization between hemispheres and language localization within hemisphere. Understanding cortical language systems is complicated by two primary challenges: the extent of the neural tissue involved and the substantial variability across individuals, especially in pathological populations. We review the contributions made through the study of electrophysiological activity to address these challenges. These contributions are based on the techniques of magnetoencephalography (MEG), intracerebral recordings, electrical-cortical stimulation (ECS), and the electrovideo analyses of seizures and their semiology. We highlight why no single modality alone is adequate to identify cortical language systems and suggest avenues for improving current practice.
Collapse
Affiliation(s)
- Agnès Trébuchon
- Aix-Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France
| | - Catherine Liégeois-Chauvel
- Aix-Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France; Department of Neurological Surgery, School of Medicine, University of Pittsburgh (PA), USA
| | | | - F-Xavier Alario
- Department of Neurological Surgery, School of Medicine, University of Pittsburgh (PA), USA; Aix-Marseille Univ, CNRS, LPC, Marseille, France.
| |
Collapse
|
22
|
Trimmel K, Caciagli L, Xiao F, van Graan LA, Koepp MJ, Thompson PJ, Duncan JS. Impaired naming performance in temporal lobe epilepsy: language fMRI responses are modulated by disease characteristics. J Neurol 2020; 268:147-160. [PMID: 32747979 PMCID: PMC7815622 DOI: 10.1007/s00415-020-10116-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To investigate alterations of language networks and their relation to impaired naming performance in temporal lobe epilepsy (TLE) using functional MRI. METHODS Seventy-two adult TLE patients (41 left) and 36 controls were studied with overt auditory and picture naming fMRI tasks to assess temporal lobe language areas, and a covert verbal fluency task to probe frontal lobe language regions. Correlation of fMRI activation with clinical naming scores, and alteration of language network patterns in relation to epilepsy duration, age at onset and seizure frequency, were investigated with whole-brain multiple regression analyses. RESULTS Auditory and picture naming fMRI activated the left posterior temporal lobe, and stronger activation correlated with better clinical naming scores. Verbal fluency MRI mainly activated frontal lobe regions. In left and right TLE, a later age of epilepsy onset related to stronger temporal lobe activations, while earlier age of onset was associated with impaired deactivation of extratemporal regions. In left TLE patients, longer disease duration and higher seizure frequency were associated with reduced deactivation. Frontal lobe language networks were unaffected by disease characteristics. CONCLUSIONS While frontal lobe language regions appear spared, temporal lobe language areas are susceptible to dysfunction and reorganisation, particularly in left TLE. Early onset and long duration of epilepsy, and high seizure frequency, were associated with compromised activation and deactivation patterns of task-associated regions, which might account for impaired naming performance in individuals with TLE.
Collapse
Affiliation(s)
- Karin Trimmel
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK. .,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK. .,Department of Neurology, Medical University of Vienna, 1090, Vienna, Austria.
| | - Lorenzo Caciagli
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK.,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| | - Fenglai Xiao
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK.,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| | - Louis A van Graan
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK.,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| | - Matthias J Koepp
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK.,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| | - Pamela J Thompson
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK.,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| | - John S Duncan
- Epilepsy Society MRI Unit, Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0LR, UK.,Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| |
Collapse
|
23
|
Perrone-Bertolotti M, Alexandre S, Jobb AS, De Palma L, Baciu M, Mairesse MP, Hoffmann D, Minotti L, Kahane P, David O. Probabilistic mapping of language networks from high frequency activity induced by direct electrical stimulation. Hum Brain Mapp 2020; 41:4113-4126. [PMID: 32697353 PMCID: PMC7469846 DOI: 10.1002/hbm.25112] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/28/2020] [Accepted: 06/02/2020] [Indexed: 11/29/2022] Open
Abstract
Direct electrical stimulation (DES) at 50 Hz is used as a gold standard to map cognitive functions but little is known about its ability to map large‐scale networks and specific subnetwork. In the present study, we aim to propose a new methodological approach to evaluate the specific hypothesis suggesting that language errors/dysfunction induced by DES are the result of large‐scale network modification rather than of a single cortical region, which explains that similar language symptoms may be observed after stimulation of different cortical regions belonging to this network. We retrospectively examined 29 patients suffering from focal drug‐resistant epilepsy who benefitted from stereo‐electroencephalographic (SEEG) exploration and exhibited language symptoms during a naming task following 50 Hz DES. We assessed the large‐scale language network correlated with behavioral DES‐induced responses (naming errors) by quantifying DES‐induced changes in high frequency activity (HFA, 70–150 Hz) outside the stimulated cortical region. We developed a probabilistic approach to report the spatial pattern of HFA modulations during DES‐induced language errors. Similarly, we mapped the pattern of after‐discharges (3–35 Hz) occurring after DES. HFA modulations concurrent to language symptoms revealed a brain network similar to our current knowledge of language gathered from standard brain mapping. In addition, specific subnetworks could be identified within the global language network, related to different language processes, generally described in relation to the classical language regions. Spatial patterns of after‐discharges were similar to HFA induced during DES. Our results suggest that this new methodological DES‐HFA mapping is a relevant approach to map functional networks during SEEG explorations, which would allow to shift from “local” to “network” perspectives.
Collapse
Affiliation(s)
- Marcela Perrone-Bertolotti
- CNRC, Laboratoire de Psychologie et NeuroCognition, University of Grenoble Alpes, University of Savoie Mont Blanc, Grenoble, France.,Institut Universitaire de, Paris, France
| | - Sarah Alexandre
- CHU Grenoble Alpes, Pôle Neurologie Psychiatrie, Grenoble, France
| | - Anne-Sophie Jobb
- CHU Grenoble Alpes, Pôle Neurologie Psychiatrie, Grenoble, France.,University of Grenoble Alpes, Grenoble Institut Neurosciences, GIN, Grenoble, France.,Inserm, Grenoble, France
| | - Luca De Palma
- CHU Grenoble Alpes, Pôle Neurologie Psychiatrie, Grenoble, France
| | - Monica Baciu
- CNRC, Laboratoire de Psychologie et NeuroCognition, University of Grenoble Alpes, University of Savoie Mont Blanc, Grenoble, France.,Institut Universitaire de, Paris, France
| | | | | | - Lorella Minotti
- CHU Grenoble Alpes, Pôle Neurologie Psychiatrie, Grenoble, France.,University of Grenoble Alpes, Grenoble Institut Neurosciences, GIN, Grenoble, France.,Inserm, Grenoble, France
| | - Philippe Kahane
- CHU Grenoble Alpes, Pôle Neurologie Psychiatrie, Grenoble, France.,University of Grenoble Alpes, Grenoble Institut Neurosciences, GIN, Grenoble, France.,Inserm, Grenoble, France
| | - Olivier David
- University of Grenoble Alpes, Grenoble Institut Neurosciences, GIN, Grenoble, France.,Inserm, Grenoble, France
| |
Collapse
|
24
|
The Clinical Utility of Transcranial Magnetic Stimulation in Determining Hemispheric Dominance for Language: A Magnetoencephalography Comparison Study. J Clin Neurophysiol 2020; 37:90-103. [PMID: 32142020 DOI: 10.1097/wnp.0000000000000499] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
PURPOSE Transcranial magnetic stimulation (TMS) has recently emerged as a noninvasive alternative to the intracarotid sodium amytal (Wada) procedure for establishing hemispheric dominance (HD) for language. The accuracy of HD determined by TMS was examined by comparing against the HD derived by magnetoencephalography (MEG), a prominent clinical technique with excellent concordance with the Wada procedure. METHODS Sixty-seven patients (54 patients ≤18 years) underwent language mapping with TMS and MEG as part of clinical epilepsy and tumor presurgical assessment. Language was mapped in MEG during an auditory word recognition paradigm, and a laterality index was calculated using the number of dipoles and their spatial extent in the two hemispheres. Transcranial magnetic stimulation language mapping was performed as patients performed a naming task, and TMS-induced speech disruptions were recorded during 5-Hz TMS applied to anterior and posterior language cortices. Transcranial magnetic stimulation laterality index was estimated using the number and type of speech disruption in the language regions of each hemisphere. RESULTS Transcranial magnetic stimulation and MEG estimates of HD were concordant in 42 (63%) patients, resulting in a sensitivity of 74% and a specificity of 72%. The overall accuracy of TMS was 73%, equivalent to an odds ratio of 7.35. CONCLUSIONS In this first large-scale comparative study in a clinical population, we demonstrate that TMS is a safe and reliable noninvasive tool in determining HD for language. Improving the accuracy of TMS by optimizing TMS parameters and improving task choice will further facilitate the use of TMS to characterize language function, especially in pediatrics.
Collapse
|
25
|
Coolen T, Wens V, Vander Ghinst M, Mary A, Bourguignon M, Naeije G, Peigneux P, Sadeghi N, Goldman S, De Tiège X. Frequency-Dependent Intrinsic Electrophysiological Functional Architecture of the Human Verbal Language Network. Front Integr Neurosci 2020; 14:27. [PMID: 32528258 PMCID: PMC7264165 DOI: 10.3389/fnint.2020.00027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/16/2020] [Indexed: 11/13/2022] Open
Abstract
Functional magnetic resonance imaging (fMRI) allowed the spatial characterization of the resting-state verbal language network (vLN). While other resting-state networks (RSNs) were matched with their electrophysiological equivalents at rest and could be spectrally defined, such correspondence is lacking for the vLN. This magnetoencephalography (MEG) study aimed at defining the spatio-spectral characteristics of the neuromagnetic intrinsic functional architecture of the vLN. Neuromagnetic activity was recorded at rest in 100 right-handed healthy adults (age range: 18-41 years). Band-limited power envelope correlations were performed within and across frequency bands (θ, α, β, and low γ) from a seed region placed in the left Broca's area, using static orthogonalization as leakage correction. K-means clustering was used to segregate spatio-spectral clusters of resting-state functional connectivity (rsFC). Remarkably, unlike other RSNs, within-frequency long-range rsFC from the left Broca's area was not driven by one main carrying frequency but was characterized by a specific spatio-spectral pattern segregated along the ventral (predominantly θ and α) and dorsal (β and low-γ bands) vLN streams. In contrast, spatial patterns of cross-frequency vLN functional integration were spectrally more widespread and involved multiple frequency bands. Moreover, the static intrinsic functional architecture of the neuromagnetic human vLN involved clearly left-hemisphere-dominant vLN interactions as well as cross-network interactions with the executive control network and postero-medial nodes of the DMN. Overall, this study highlighted the involvement of multiple modes of within and cross-frequency power envelope couplings at the basis of long-range electrophysiological vLN functional integration. As such, it lays the foundation for future works aimed at understanding the pathophysiology of language-related disorders.
Collapse
Affiliation(s)
- Tim Coolen
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium.,Department of Radiology, CUB-Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Vincent Wens
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium.,Magnetoencenphalography Unit, Department of Functional Neuroimaging, Service of Nuclear Medicine, CUB-Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Marc Vander Ghinst
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Alison Mary
- Neuropsychology & Functional Neuroimaging Research Unit (UR2NF), Center for Research in Cognition and Neurosciences, ULB-Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Mathieu Bourguignon
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium.,BCBL-Basque Center on Cognition, Brain and Language, San Sebastian, Spain.,Laboratoire Cognition Langage et Développement, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Gilles Naeije
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Philippe Peigneux
- Neuropsychology & Functional Neuroimaging Research Unit (UR2NF), Center for Research in Cognition and Neurosciences, ULB-Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Niloufar Sadeghi
- Department of Radiology, CUB-Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Serge Goldman
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium.,Magnetoencenphalography Unit, Department of Functional Neuroimaging, Service of Nuclear Medicine, CUB-Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Xavier De Tiège
- Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), Brussels, Belgium.,Magnetoencenphalography Unit, Department of Functional Neuroimaging, Service of Nuclear Medicine, CUB-Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium
| |
Collapse
|
26
|
Villar-Rodríguez E, Palomar-García MÁ, Hernández M, Adrián-Ventura J, Olcina-Sempere G, Parcet MA, Ávila C. Left-handed musicians show a higher probability of atypical cerebral dominance for language. Hum Brain Mapp 2020; 41:2048-2058. [PMID: 32034834 PMCID: PMC7268010 DOI: 10.1002/hbm.24929] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/02/2019] [Accepted: 01/07/2020] [Indexed: 12/18/2022] Open
Abstract
Music processing and right hemispheric language lateralization share a common network in the right auditory cortex and its frontal connections. Given that the development of hemispheric language dominance takes place over several years, this study tested whether musicianship could increase the probability of observing right language dominance in left-handers. Using a classic fMRI language paradigm, results showed that atypical lateralization was more predominant in musicians (40%) than in nonmusicians (5%). Comparison of left-handers with typical left and atypical right lateralization revealed that: (a) atypical cases presented a thicker right pars triangularis and more gyrified left Heschl's gyrus; and (b) the right pars triangularis of atypical cases showed a stronger intra-hemispheric functional connectivity with the right angular gyrus, but a weaker interhemispheric functional connectivity with part of the left Broca's area. Thus, musicianship is the first known factor related to a higher prevalence of atypical language dominance in healthy left-handed individuals. We suggest that differences in the frontal and temporal cortex might act as shared predisposing factors to both musicianship and atypical language lateralization.
Collapse
Affiliation(s)
- Esteban Villar-Rodríguez
- Neuropsychology and Functional Neuroimaging Group, Jaume I University, Edificio de Investigación II, Castellón de la Plana, Spain
| | - María-Ángeles Palomar-García
- Neuropsychology and Functional Neuroimaging Group, Jaume I University, Edificio de Investigación II, Castellón de la Plana, Spain
| | - Mireia Hernández
- Cognition and Brain Plasticity Group, Department of Cognition, Development and Educational Psychology, Institut de Neurociències, University of Barcelona, Barcelona, Spain
| | - Jesús Adrián-Ventura
- Neuropsychology and Functional Neuroimaging Group, Jaume I University, Edificio de Investigación II, Castellón de la Plana, Spain
| | - Gustau Olcina-Sempere
- Neuropsychology and Functional Neuroimaging Group, Jaume I University, Edificio de Investigación II, Castellón de la Plana, Spain
| | - María-Antònia Parcet
- Neuropsychology and Functional Neuroimaging Group, Jaume I University, Edificio de Investigación II, Castellón de la Plana, Spain
| | - César Ávila
- Neuropsychology and Functional Neuroimaging Group, Jaume I University, Edificio de Investigación II, Castellón de la Plana, Spain
| |
Collapse
|
27
|
Schiller K, Choudhri AF, Jones T, Holder C, Wheless JW, Narayana S. Concordance Between Transcranial Magnetic Stimulation and Functional Magnetic Resonance Imaging (MRI) Derived Localization of Language in a Clinical Cohort. J Child Neurol 2020; 35:363-379. [PMID: 32122221 DOI: 10.1177/0883073820901415] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Transcranial magnetic stimulation (TMS) is a newer noninvasive language mapping tool that is safe and well-tolerated by children. We examined the accuracy of TMS-derived language maps in a clinical cohort by comparing it against functional magnetic resonance imaging (MRI)-derived language map. The number of TMS-induced speech disruptions and the volume of activation during functional MRI tasks were localized to Brodmann areas for each modality in 40 patients with epilepsy or brain tumor. We examined the concordance between TMS- and functional MRI-derived language maps by deriving statistical performance metrics for TMS including sensitivity, specificity, accuracy, and diagnostic odds ratio. Brodmann areas 6, 44, and 9 in the frontal lobe and 22 and 40 in the temporal lobe were the most commonly identified language areas by both modalities. Overall accuracy of TMS compared to functional MRI in localizing language cortex was 71%, with a diagnostic odds ratio of 1.27 and higher sensitivity when identifying left hemisphere regions. TMS was more accurate in determining the dominant hemisphere for language with a diagnostic odds ratio of 6. This study is the first to examine the accuracy of the whole brain language map derived by TMS in the largest cohort examined to date. While this comparison against functional MRI confirmed that TMS reliably localizes cortical areas that are not essential for speech function, it demonstrated only slight concordance between TMS- and functional MRI-derived language areas. That the localization of specific language cortices by TMS demonstrated low accuracy reveals a potential need to use concordant tasks between the modalities and other avenues for further optimization of TMS parameters.
Collapse
Affiliation(s)
- Katherine Schiller
- Department of Pediatrics, Division of Pediatric Neurology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Asim F Choudhri
- Le Bonheur Children's Hospital, Le Bonheur Neuroscience Institute, Memphis, TN, USA.,Department of Radiology, University of Tennessee Health Science Center, Memphis, TN, USA.,Department of Neurosurgery, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Tamekia Jones
- Department of Pediatrics, Division of Pediatric Neurology, University of Tennessee Health Science Center, Memphis, TN, USA.,Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN, USA
| | - Christen Holder
- Department of Pediatrics, Division of Pediatric Neurology, University of Tennessee Health Science Center, Memphis, TN, USA.,Le Bonheur Children's Hospital, Le Bonheur Neuroscience Institute, Memphis, TN, USA
| | - James W Wheless
- Department of Pediatrics, Division of Pediatric Neurology, University of Tennessee Health Science Center, Memphis, TN, USA.,Le Bonheur Children's Hospital, Le Bonheur Neuroscience Institute, Memphis, TN, USA
| | - Shalini Narayana
- Department of Pediatrics, Division of Pediatric Neurology, University of Tennessee Health Science Center, Memphis, TN, USA.,Le Bonheur Children's Hospital, Le Bonheur Neuroscience Institute, Memphis, TN, USA.,Department of Neurobiology and Anatomy, University of Tennessee Health Science Center, Memphis, TN, USA
| |
Collapse
|
28
|
Bargalló N, Cano-López I, Rosazza C, Vernooij MW, Smits M, Vitali P, Alvarez-Linera J, Urbach H, Mancini L, Ramos A, Yousry T. Clinical practice of language fMRI in epilepsy centers: a European survey and conclusions by the ESNR Epilepsy Working Group. Neuroradiology 2020; 62:549-562. [PMID: 32170372 PMCID: PMC7186249 DOI: 10.1007/s00234-020-02397-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/04/2020] [Indexed: 01/08/2023]
Abstract
Purpose To assess current clinical practices throughout Europe with respect to acquisition, implementation, evaluation, and interpretation of language functional MRI (fMRI) in epilepsy patients. Methods An online survey was emailed to all European Society of Neuroradiology members (n = 1662), known associates (n = 6400), and 64 members of European Epilepsy network. The questionnaire featured 40 individual items on demographic data, clinical practice and indications, fMRI paradigms, radiological workflow, data post-processing protocol, and reporting. Results A total of 49 non-duplicate entries from European centers were received from 20 countries. Of these, 73.5% were board-certified neuroradiologists and 69.4% had an in-house epilepsy surgery program. Seventy-one percent of centers performed fewer than five scans per month for epilepsy. The most frequently used paradigms were phonemic verbal fluency (47.7%) and auditory comprehension (55.6%), but variants of 13 paradigms were described. Most centers assessed the fMRI task performance (75.5%), ensured cognitive-task adjustment (77.6%), trained the patient before scanning (85.7%), and assessed handedness (77.6%), but only 28.6% had special paradigms for patients with cognitive impairments. fMRI was post-processed mainly by neuroradiologists (42.1%), using open-source software (55.0%). Reporting was done primarily by neuroradiologists (74.2%). Interpretation was done mainly by visual inspection (65.3%). Most specialists (81.6%) were able to determine the hemisphere dominance for language in more than 75% of exams, attributing failure to the patient not performing the task correctly. Conclusion This survey shows that language fMRI is firmly embedded in the preoperative management of epilepsy patients. The wide variety of paradigms and the use of non-CE-marked software underline the need for establishing reference standards. Electronic supplementary material The online version of this article (10.1007/s00234-020-02397-w) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- N Bargalló
- Magnetic Resonance Image Core Facility, IDIBAPS and Center of Diagnostic Image (CDIC), Hospital Clinic, Barcelona, Spain.
| | - I Cano-López
- Valencian International University, Valencia, Spain
| | - C Rosazza
- Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - M W Vernooij
- Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - M Smits
- Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - P Vitali
- Neuroradiology and Brain MRI 3T Mondino Research Center, IRCCS Mondino Foundation, Pavia, Italy
| | - J Alvarez-Linera
- Neuroradiology Department, Hospital Ruber Internacional, Madrid, Spain
| | - H Urbach
- Department of Neuroradiology, Freiburg University Medical Center, Freiburg (i.Br.), Germany
| | - L Mancini
- Lysholm Department of Neuro-radiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Trust, London, UK
| | - A Ramos
- Departments Radiology (A.H., A.R.), Hospital Universitario 12 de Octubre, Madrid, Spain
| | - T Yousry
- Lysholm Department of Neuro-radiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Trust, London, UK
| |
Collapse
|
29
|
Giroud J, Trébuchon A, Schön D, Marquis P, Liegeois-Chauvel C, Poeppel D, Morillon B. Asymmetric sampling in human auditory cortex reveals spectral processing hierarchy. PLoS Biol 2020; 18:e3000207. [PMID: 32119667 PMCID: PMC7067489 DOI: 10.1371/journal.pbio.3000207] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/12/2020] [Accepted: 02/13/2020] [Indexed: 11/18/2022] Open
Abstract
Speech perception is mediated by both left and right auditory cortices but with differential sensitivity to specific acoustic information contained in the speech signal. A detailed description of this functional asymmetry is missing, and the underlying models are widely debated. We analyzed cortical responses from 96 epilepsy patients with electrode implantation in left or right primary, secondary, and/or association auditory cortex (AAC). We presented short acoustic transients to noninvasively estimate the dynamical properties of multiple functional regions along the auditory cortical hierarchy. We show remarkably similar bimodal spectral response profiles in left and right primary and secondary regions, with evoked activity composed of dynamics in the theta (around 4–8 Hz) and beta–gamma (around 15–40 Hz) ranges. Beyond these first cortical levels of auditory processing, a hemispheric asymmetry emerged, with delta and beta band (3/15 Hz) responsivity prevailing in the right hemisphere and theta and gamma band (6/40 Hz) activity prevailing in the left. This asymmetry is also present during syllables presentation, but the evoked responses in AAC are more heterogeneous, with the co-occurrence of alpha (around 10 Hz) and gamma (>25 Hz) activity bilaterally. These intracranial data provide a more fine-grained and nuanced characterization of cortical auditory processing in the 2 hemispheres, shedding light on the neural dynamics that potentially shape auditory and speech processing at different levels of the cortical hierarchy. Capitalizing on intracranial data from 96 epileptic patients, this study precisely estimates the processing timescales along the cortical auditory hierarchy and reveals that an asymmetric sampling emerges in associative areas.
Collapse
Affiliation(s)
- Jérémy Giroud
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, Marseille, France
| | - Agnès Trébuchon
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, Marseille, France
- APHM, Hôpital de la Timone, Service de Neurophysiologie Clinique, Marseille, France
| | - Daniele Schön
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, Marseille, France
| | - Patrick Marquis
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, Marseille, France
| | - Catherine Liegeois-Chauvel
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, Marseille, France
- Cleveland Clinic Neurological Institute, Epilepsy Center, Cleveland, Ohio, United States of America
| | - David Poeppel
- Department of Neuroscience, Max-Planck-Institute for Empirical Aesthetics, Frankfurt am Main, Germany
- Department of Psychology and Center for Neural Science, New York University, New York, New York, United States of America
| | - Benjamin Morillon
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, Marseille, France
- * E-mail:
| |
Collapse
|
30
|
Croxson PL, Forkel SJ, Cerliani L, Thiebaut de Schotten M. Structural Variability Across the Primate Brain: A Cross-Species Comparison. Cereb Cortex 2019; 28:3829-3841. [PMID: 29045561 DOI: 10.1093/cercor/bhx244] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Indexed: 11/13/2022] Open
Abstract
A large amount of variability exists across human brains; revealed initially on a small scale by postmortem studies and, more recently, on a larger scale with the advent of neuroimaging. Here we compared structural variability between human and macaque monkey brains using grey and white matter magnetic resonance imaging measures. The monkey brain was overall structurally as variable as the human brain, but variability had a distinct distribution pattern, with some key areas showing high variability. We also report the first evidence of a relationship between anatomical variability and evolutionary expansion in the primate brain. This suggests a relationship between variability and stability, where areas of low variability may have evolved less recently and have more stability, while areas of high variability may have evolved more recently and be less similar across individuals. We showed specific differences between the species in key areas, including the amount of hemispheric asymmetry in variability, which was left-lateralized in the human brain across several phylogenetically recent regions. This suggests that cerebral variability may be another useful measure for comparison between species and may add another dimension to our understanding of evolutionary mechanisms.
Collapse
Affiliation(s)
- Paula L Croxson
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L Levy Place, New York, NY, USA
| | - Stephanie J Forkel
- Centre for Neuroimaging Sciences, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,Natbrainlab, Department Forensics and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - 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
| | - 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
| |
Collapse
|
31
|
Klaus J, Schutter DJLG, Piai V. Transient perturbation of the left temporal cortex evokes plasticity-related reconfiguration of the lexical network. Hum Brain Mapp 2019; 41:1061-1071. [PMID: 31705740 PMCID: PMC7267941 DOI: 10.1002/hbm.24860] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 09/30/2019] [Accepted: 10/28/2019] [Indexed: 12/28/2022] Open
Abstract
While much progress has been made in how brain organization supports language function, the language network's ability to adapt to immediate disturbances by means of reorganization remains unclear. The aim of this study was to examine acute reorganizational changes in brain activity related to conceptual and lexical retrieval in unimpaired language production following transient disruption of the left middle temporal gyrus (MTG). In a randomized single‐blind within‐subject experiment, we recorded the electroencephalogram from 16 healthy participants during a context‐driven picture‐naming task. Prior to the task, the left MTG was perturbed with real continuous theta‐burst stimulation (cTBS) or sham stimulation. During the task, participants read lead‐in sentences creating a constraining (e.g., “The farmer milks the”) or nonconstraining context (e.g., “The farmer buys the”). The last word was shown as a picture that participants had to name (e.g., “cow”). Replicating behavioral studies, participants were overall faster in naming pictures following a constraining relative to a nonconstraining context, but this effect did not differ between real and sham cTBS. In contrast, real cTBS increased overall error rates compared to sham cTBS. In line with previous studies, we observed a decrease in alpha‐beta (8–24 Hz) oscillatory power for constraining relative to nonconstraining contexts over left temporal–parietal cortex after participants received sham cTBS. However, following real cTBS, this decrease extended toward left prefrontal regions associated with both domain‐general and domain‐specific control mechanisms. Our findings provide evidence that immediately after perturbing the left MTG, the lexical‐semantic network is able to quickly reconfigure, also recruiting domain‐general regions.
Collapse
Affiliation(s)
- Jana Klaus
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, Netherlands.,Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.,Helmholtz Institute, Experimental Psychology, Utrecht University, Utrecht, Netherlands
| | - Dennis J L G Schutter
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, Netherlands.,Helmholtz Institute, Experimental Psychology, Utrecht University, Utrecht, Netherlands
| | - Vitória Piai
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, Netherlands.,Donders Centre for Medical Neuroscience, Radboud University Medical Center, Nijmegen, Netherlands
| |
Collapse
|
32
|
Characterising neural plasticity at the single patient level using connectivity fingerprints. NEUROIMAGE-CLINICAL 2019; 24:101952. [PMID: 31357148 PMCID: PMC6664196 DOI: 10.1016/j.nicl.2019.101952] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/11/2019] [Accepted: 07/19/2019] [Indexed: 02/07/2023]
Abstract
The occurrence of wide-scale neuroplasticity in the injured human brain raises hopes for biomarkers to guide personalised treatment. At the individual level, functional reorganisation has proven challenging to quantify using current techniques that are optimised for population-based analyses. In this cross-sectional study, we acquired functional MRI scans in 44 patients (22 men, 22 women, mean age: 39.4 ± 14 years) with a language-dominant hemisphere brain tumour prior to surgery and 23 healthy volunteers (11 men, 12 women, mean age: 36.3 ± 10.9 years) during performance of a verbal fluency task. We applied a recently developed approach to characterise the normal range of functional connectivity patterns during task performance in healthy controls. Next, we statistically quantified differences from the normal in individual patients and evaluated factors driving these differences. We show that the functional connectivity of brain regions involved in language fluency identifies “fingerprints” of brain plasticity in individual patients, not detected using standard task-evoked analyses. In contrast to healthy controls, patients with a tumour in their language dominant hemisphere showed highly variable fingerprints that uniquely distinguished individuals. Atypical fingerprints were influenced by tumour grade and tumour location relative to the typical fluency-activated network. Our findings show how alterations in brain networks can be visualised and statistically quantified from connectivity fingerprints in individual brains. We propose that connectivity fingerprints offer a statistical metric of individually-specific network organisation through which behaviourally-relevant adaptations could be formally quantified and monitored across individuals, treatments and time. Personalised treatment awaits individualised measures of brain adaptation. Connectivity patterns from FMRI offer unique “fingerprints” of brain networks. Individual brain tumours disrupt the language fluency network in unique ways. By fingerprint matching, networks can be tested and visualised in single patients.
Collapse
|
33
|
Carrion‐Castillo A, Van der Haegen L, Tzourio‐Mazoyer N, Kavaklioglu T, Badillo S, Chavent M, Saracco J, Brysbaert M, Fisher SE, Mazoyer B, Francks C. Genome sequencing for rightward hemispheric language dominance. GENES, BRAIN, AND BEHAVIOR 2019; 18:e12572. [PMID: 30950222 PMCID: PMC6850193 DOI: 10.1111/gbb.12572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/18/2019] [Accepted: 04/02/2019] [Indexed: 12/14/2022]
Abstract
Most people have left-hemisphere dominance for various aspects of language processing, but only roughly 1% of the adult population has atypically reversed, rightward hemispheric language dominance (RHLD). The genetic-developmental program that underlies leftward language laterality is unknown, as are the causes of atypical variation. We performed an exploratory whole-genome-sequencing study, with the hypothesis that strongly penetrant, rare genetic mutations might sometimes be involved in RHLD. This was by analogy with situs inversus of the visceral organs (left-right mirror reversal of the heart, lungs and so on), which is sometimes due to monogenic mutations. The genomes of 33 subjects with RHLD were sequenced and analyzed with reference to large population-genetic data sets, as well as 34 subjects (14 left-handed) with typical language laterality. The sample was powered to detect rare, highly penetrant, monogenic effects if they would be present in at least 10 of the 33 RHLD cases and no controls, but no individual genes had mutations in more than five RHLD cases while being un-mutated in controls. A hypothesis derived from invertebrate mechanisms of left-right axis formation led to the detection of an increased mutation load, in RHLD subjects, within genes involved with the actin cytoskeleton. The latter finding offers a first, tentative insight into molecular genetic influences on hemispheric language dominance.
Collapse
Affiliation(s)
- Amaia Carrion‐Castillo
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
| | - Lise Van der Haegen
- Department of Experimental PsychologyGhent Institute for Functional and Metabolic Imaging, Ghent UniversityGhentBelgium
| | - Nathalie Tzourio‐Mazoyer
- Groupe d'Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives, Centre National de la Recherche Scientifique, Commissariat à l'Energie Atomiqueet Université de BordeauxBordeauxFrance
| | - Tulya Kavaklioglu
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
| | - Solveig Badillo
- Groupe d'Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives, Centre National de la Recherche Scientifique, Commissariat à l'Energie Atomiqueet Université de BordeauxBordeauxFrance
- Institut de Mathématiques de Bordeaux, Centre National de la Recherche Scientifique, Institut National de la Recherche en Informatique et Automatiqueet Université de BordeauxBordeauxFrance
| | - Marie Chavent
- Institut de Mathématiques de Bordeaux, Centre National de la Recherche Scientifique, Institut National de la Recherche en Informatique et Automatiqueet Université de BordeauxBordeauxFrance
| | - Jérôme Saracco
- Institut de Mathématiques de Bordeaux, Centre National de la Recherche Scientifique, Institut National de la Recherche en Informatique et Automatiqueet Université de BordeauxBordeauxFrance
| | - Marc Brysbaert
- Department of Experimental PsychologyGhent Institute for Functional and Metabolic Imaging, Ghent UniversityGhentBelgium
| | - Simon E. Fisher
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
- Donders Institute for Brain, Cognition and BehaviourRadboud UniversityNijmegenThe Netherlands
| | - Bernard Mazoyer
- Groupe d'Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives, Centre National de la Recherche Scientifique, Commissariat à l'Energie Atomiqueet Université de BordeauxBordeauxFrance
| | - Clyde Francks
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
- Donders Institute for Brain, Cognition and BehaviourRadboud UniversityNijmegenThe Netherlands
| |
Collapse
|
34
|
Payne H, Gutierrez-Sigut E, Woll B, MacSweeney M. Cerebral lateralisation during signed and spoken language production in children born deaf. Dev Cogn Neurosci 2019; 36:100619. [PMID: 30711882 PMCID: PMC6891228 DOI: 10.1016/j.dcn.2019.100619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 01/26/2023] Open
Abstract
The effect of sensory experience on hemispheric specialisation for language production is not well understood. Children born deaf, including those who have cochlear implants, have drastically different perceptual experiences of language than their hearing peers. Using functional transcranial Doppler sonography (fTCD), we measured lateralisation during language production in a heterogeneous group of 19 deaf children and in 19 hearing children, matched on language ability. In children born deaf, we observed significant left lateralisation during language production (British Sign Language, spoken English, or a combination of languages). There was no difference in the strength of lateralisation between deaf and hearing groups. Comparable proportions of children were categorised as left-, right-, or not significantly-lateralised in each group. Moreover, an exploratory subgroup analysis showed no significant difference in lateralisation between deaf children with cochlear implants and those without. These data suggest that the processes underpinning language production remain robustly left lateralised regardless of sensory language experience.
Collapse
Affiliation(s)
- Heather Payne
- Deafness, Cognition & Language Research Centre, University College London, WC1H 0PD, UK; Institute of Cognitive Neuroscience, University College London, WC1N 3AZ, UK.
| | - Eva Gutierrez-Sigut
- Deafness, Cognition & Language Research Centre, University College London, WC1H 0PD, UK; Institute of Cognitive Neuroscience, University College London, WC1N 3AZ, UK; Departamento de Metodología de las Ciencias del Comportamiento, Universitat de València, Av. Blasco Ibáñez, 2146010, Spain.
| | - Bencie Woll
- Deafness, Cognition & Language Research Centre, University College London, WC1H 0PD, UK.
| | - Mairéad MacSweeney
- Deafness, Cognition & Language Research Centre, University College London, WC1H 0PD, UK; Institute of Cognitive Neuroscience, University College London, WC1N 3AZ, UK.
| |
Collapse
|
35
|
Assaf Y, Johansen-Berg H, Thiebaut de Schotten M. The role of diffusion MRI in neuroscience. NMR IN BIOMEDICINE 2019; 32:e3762. [PMID: 28696013 DOI: 10.1002/nbm.3762] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 04/25/2017] [Accepted: 05/17/2017] [Indexed: 05/05/2023]
Abstract
Diffusion-weighted imaging has pushed the boundaries of neuroscience by allowing us to examine the white matter microstructure of the living human brain. By doing so, it has provided answers to fundamental neuroscientific questions, launching a new field of research that had been largely inaccessible. We briefly summarize key questions that have historically been raised in neuroscience concerning the brain's white matter. We then expand on the benefits of diffusion-weighted imaging and its contribution to the fields of brain anatomy, functional models and plasticity. In doing so, this review highlights the invaluable contribution of diffusion-weighted imaging in neuroscience, presents its limitations and proposes new challenges for future generations who may wish to exploit this powerful technology to gain novel insights.
Collapse
Affiliation(s)
- Yaniv Assaf
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Heidi Johansen-Berg
- FMRIB Centre, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Michel Thiebaut de Schotten
- Brain Connectivity and Behaviour Group, Frontlab, Brain and Spine Institute, Paris, France
- Sorbonne Universités, UPMC Université Paris 06, Inserm, CNRS, Institut du cerveau et la moelle (ICM) - Hôpital Pitié-Salpêtrière, Boulevard de l'hôpital, Paris, France
- Centre de Neuroimagerie de Recherche CENIR, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| |
Collapse
|
36
|
Cano-López I, Calvo A, Boget T, Carreño M, Donaire A, Setoain X, Pintor L, Rumià J, González-Bono E, Junqué C, Bargalló N. Typical asymmetry in the hemispheric activation during an fMRI verbal comprehension paradigm is related to better performance in verbal and non-verbal tasks in patients with epilepsy. Neuroimage Clin 2018; 20:742-752. [PMID: 30238918 PMCID: PMC6154460 DOI: 10.1016/j.nicl.2018.09.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/05/2018] [Accepted: 09/14/2018] [Indexed: 01/28/2023]
Abstract
Chronic exposure to seizures in patients with left hemisphere (LH) epileptic focus could favor higher activation in the contralateral hemisphere during language processing, but the cognitive effects of this remain unclear. This study assesses the relationship between asymmetry in hemispheric activation during language fMRI and performance in verbal and non-verbal tasks. Whereas prior studies primarily used fMRI paradigms that favor frontal lobe activation and less prominent activation of the medial or superior temporal lobes, we used a verbal comprehension paradigm previously demonstrated to activate reliably receptive language areas. Forty-seven patients with drug-resistant epilepsy candidates for surgery underwent a multidisciplinary assessment, including a comprehensive neuropsychological evaluation and an fMRI verbal comprehension paradigm. Patients were distributed in two groups depending on laterality indexes (LI): typical hemispheric asymmetry (unilateral left activation preponderance; n = 23) and atypical hemispheric asymmetry (bilateral or unilateral right preponderance; n = 24). Right-handedness and right hemisphere (RH) focus were significant predictors of typical asymmetry. Patients with typical activation pattern presented better performance intelligence quotient and verbal learning than patients with atypical hemispheric asymmetry (for all, p < 0.014). Patients with LH focus had more frequently atypical hemispheric asymmetry than patients with RH focus (p = 0.05). Specifically, they showed lower LI and this was related to worse performance in verbal and non-verbal tasks. In conclusion, an increased activation of homologous RH areas for verbal comprehension processing could imply a competition of cognitive resources in the performance of the same task, disrupting cognitive performance.
Collapse
Affiliation(s)
- Irene Cano-López
- IDOCAL/Department of Psychobiology, Psychology Center, University of Valencia, Valencia, Spain.
| | - Anna Calvo
- IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain
| | - Teresa Boget
- Epilepsy Unit, Department of Psychiatry, Hospital Clínic, Barcelona, Spain
| | - Mar Carreño
- Epilepsy Unit, Department of Neurology, Hospital Clínic, Barcelona, Spain
| | - Antonio Donaire
- Epilepsy Unit, Department of Neurology, Hospital Clínic, Barcelona, Spain
| | - Xavier Setoain
- Epilepsy Unit, Department of Nuclear Medicine, Hospital Clínic, Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - Luis Pintor
- Epilepsy Unit, Department of Psychiatry, Hospital Clínic, Barcelona, Spain
| | - Jordi Rumià
- Epilepsy Unit, Department of Neurosurgery, Hospital Clínic, Barcelona, Spain
| | - Esperanza González-Bono
- IDOCAL/Department of Psychobiology, Psychology Center, University of Valencia, Valencia, Spain
| | - Carme Junqué
- IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain; Medical Psychology Unit, Department of Medicine, Institute of Neuroscience, University of Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Hospital Clínic, Barcelona, Spain
| | - Núria Bargalló
- IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain; Epilepsy Unit, Department of Radiology, Hospital Clínic, Barcelona, Spain
| |
Collapse
|
37
|
Ocklenburg S, Friedrich P, Fraenz C, Schlüter C, Beste C, Güntürkün O, Genç E. Neurite architecture of the planum temporale predicts neurophysiological processing of auditory speech. SCIENCE ADVANCES 2018; 4:eaar6830. [PMID: 30009258 PMCID: PMC6040861 DOI: 10.1126/sciadv.aar6830] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 05/31/2018] [Indexed: 06/08/2023]
Abstract
The left hemispheric advantage in speech perception is reflected in faster neurophysiological processing. On the basis of postmortem data, it has been suggested that asymmetries in the organization of the intrinsic microcircuitry of the posterior temporal lobe may produce this leftward timing advantage. However, whether this hypothetical structure-function relationship exists in vivo has never been empirically validated. To test this assumption, we used in vivo neurite orientation dispersion and density imaging to quantify microcircuitry in terms of axon and dendrite complexity of the left and right planum temporale in 98 individuals. We found that a higher density of dendrites and axons in the temporal speech area is associated with faster neurophysiological processing of auditory speech, as reflected by electroencephalography. Our results imply that a higher density and higher number of synaptic contacts in the left posterior temporal lobe increase temporal precision and decrease latency of neurophysiological processes in this brain region.
Collapse
Affiliation(s)
- Sebastian Ocklenburg
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Patrick Friedrich
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Christoph Fraenz
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Caroline Schlüter
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Christian Beste
- Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Onur Güntürkün
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Erhan Genç
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| |
Collapse
|
38
|
Chen S, Fang J, An D, Xiao F, Chen D, Chen T, Zhou D, Liu L. The focal alteration and causal connectivity in children with new-onset benign epilepsy with centrotemporal spikes. Sci Rep 2018; 8:5689. [PMID: 29632387 PMCID: PMC5890242 DOI: 10.1038/s41598-018-23336-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 03/09/2018] [Indexed: 02/05/2023] Open
Abstract
The aim of the current study was to find the epileptic focus and examine its causal relationship to other brain regions in children with new-onset benign childhood epilepsy with centrotemporal spikes (BECTS). Resting-state functional magnetic resonance imaging (fMRI) was performed in 66 children with BECTS and 37 matched control children. We compared the amplitude of low frequency fluctuation (ALFF) signals between the two groups to find the potential epileptogenic zone (EZ), then used Granger causality analysis (GCA) to explore the causal effects of EZ on the whole brain. Children with BECTS had significantly increased ALFF in the right Broca’s area, and decreased ALFF in bilateral fusiform gyrus. The patients also showed increased driving effect from the EZ in Broca’s area to the right prefrontal lobe, and decreased effects to the frontal lobe and posterior parts of the language network. The causal effect on left Wernicke’s area negatively correlated with verbal IQ (VIQ) score. Our research on new-onset BECTS patients illustrates a possible compensatory mechanism in the language network at early stages of BECTS, and the negative correlation of GCA and VIQ suggest the disturbance of epileptiform activity on language. These findings shed light on the mechanisms of and language dysfunction in BECTS.
Collapse
Affiliation(s)
- Sihan Chen
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China
| | - Jiajia Fang
- Department of Neurology, Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu, PR China
| | - Dongmei An
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China
| | - Fenglai Xiao
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China
| | - Deng Chen
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China
| | - Tao Chen
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China
| | - Dong Zhou
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China.
| | - Ling Liu
- Epilepsy Center, Department of Neurology, West China Hospital, Sichuan University, Chengdu, PR China.
| |
Collapse
|
39
|
Luders E, Kurth F, Pigdon L, Conti-Ramsden G, Reilly S, Morgan AT. Atypical Callosal Morphology in Children with Speech Sound Disorder. Neuroscience 2017; 367:211-218. [PMID: 29102664 DOI: 10.1016/j.neuroscience.2017.10.039] [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: 07/01/2017] [Revised: 10/25/2017] [Accepted: 10/26/2017] [Indexed: 12/16/2022]
Abstract
Speech sound disorder (SSD) is common, yet its neurobiology is poorly understood. Recent studies indicate atypical structural and functional anomalies either in one hemisphere or both hemispheres, which might be accompanied by alterations in inter-hemispheric connectivity. Indeed, abnormalities of the corpus callosum - the main fiber tract connecting the two hemispheres - have been linked to speech and language deficits in associated disorders, such as stuttering, dyslexia, aphasia, etc. However, there is a dearth of studies examining the corpus callosum in SSD. Here, we investigated whether a sample of 18 children with SSD differed in callosal morphology from 18 typically developing children carefully matched for age. Significantly reduced dimensions of the corpus callosum, particularly in the callosal anterior third, were observed in children with SSD. These findings indicating pronounced callosal aberrations in SSD make an important contribution to an understudied field of research and may suggest that SSD is accompanied by atypical lateralization of speech and language function.
Collapse
Affiliation(s)
- Eileen Luders
- Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, USA; Murdoch Childrens Research Institute, Melbourne, Australia.
| | - Florian Kurth
- Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, USA
| | - Lauren Pigdon
- Murdoch Childrens Research Institute, Melbourne, Australia
| | - Gina Conti-Ramsden
- Murdoch Childrens Research Institute, Melbourne, Australia; The University of Manchester and Manchester Academic Health Science Centre (MAHSC), Manchester, United Kingdom
| | - Sheena Reilly
- Murdoch Childrens Research Institute, Melbourne, Australia; Menzies Health Institute at Griffith University, Gold Coast, Queensland, Australia
| | - Angela T Morgan
- Murdoch Childrens Research Institute, Melbourne, Australia; University of Melbourne, Melbourne, Australia.
| |
Collapse
|
40
|
Zago L, Hervé PY, Genuer R, Laurent A, Mazoyer B, Tzourio-Mazoyer N, Joliot M. Predicting hemispheric dominance for language production in healthy individuals using support vector machine. Hum Brain Mapp 2017; 38:5871-5889. [PMID: 28868791 DOI: 10.1002/hbm.23770] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 07/27/2017] [Accepted: 08/08/2017] [Indexed: 01/16/2023] Open
Abstract
We used a Support Vector Machine (SVM) classifier to assess hemispheric pattern of language dominance of 47 individuals categorized as non-typical for language from their hemispheric functional laterality index (HFLI) measured on a sentence minus word-list production fMRI-BOLD contrast map. The SVM classifier was trained at discriminating between Dominant and Non-Dominant hemispheric language production activation pattern on a group of 250 participants previously identified as Typicals (HFLI strongly leftward). Then, SVM was applied to each hemispheric language activation pattern of 47 non-typical individuals. The results showed that at least one hemisphere (left or right) was found to be Dominant in every, except 3 individuals, indicating that the "dominant" type of functional organization is the most frequent in non-typicals. Specifically, left hemisphere dominance was predicted in all non-typical right-handers (RH) and in 57.4% of non-typical left-handers (LH). When both hemisphere classifications were jointly considered, four types of brain patterns were observed. The most often predicted pattern (51%) was left-dominant (Dominant left-hemisphere and Non-Dominant right-hemisphere), followed by right-dominant (23%, Dominant right-hemisphere and Non-Dominant left-hemisphere) and co-dominant (19%, 2 Dominant hemispheres) patterns. Co-non-dominant was rare (6%, 2 Non-Dominant hemispheres), but was normal variants of hemispheric specialization. In RH, only left-dominant (72%) and co-dominant patterns were detected, while for LH, all types were found, although with different occurrences. Among the 10 LH with a strong rightward HFLI, 8 had a right-dominant brain pattern. Whole-brain analysis of the right-dominant pattern group confirmed that it exhibited a functional organization strictly mirroring that of left-dominant pattern group. Hum Brain Mapp 38:5871-5889, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Laure Zago
- Université de Bordeaux, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CNRS, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CEA, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France
| | - Pierre-Yves Hervé
- Université de Bordeaux, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CNRS, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CEA, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France
| | - Robin Genuer
- Université de Bordeaux, ISPED, Centre INSERM U-1219, F-33000 Bordeaux, France.,INSERM, ISPED, Centre INSERM U-1219, F-33000 Bordeaux, France
| | - Alexandre Laurent
- Université de Bordeaux, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CNRS, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CEA, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France
| | - Bernard Mazoyer
- Université de Bordeaux, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CNRS, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CEA, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France
| | - Nathalie Tzourio-Mazoyer
- Université de Bordeaux, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CNRS, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CEA, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France
| | - Marc Joliot
- Université de Bordeaux, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CNRS, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France.,CEA, Institut des Maladies Neurodégéneratives, UMR 5293, Groupe d'Imagerie Neurofonctionnelle, F-33000 Bordeaux, France
| |
Collapse
|
41
|
Hussey EK, Christianson K, Treiman DM, Smith KA, Steinmetz PN. Single neuron recordings of bilinguals performing in a continuous recognition memory task. PLoS One 2017; 12:e0181850. [PMID: 28832639 PMCID: PMC5568109 DOI: 10.1371/journal.pone.0181850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 07/07/2017] [Indexed: 01/09/2023] Open
Abstract
We report the results of a bilingual continuous recognition memory task during which single- and multi-neuron activity was recorded in human subjects with intracranial microwire implants. Subjects (n = 5) were right-handed Spanish-English bilinguals who were undergoing evaluation prior to surgery for severe epilepsy. Subjects were presented with Spanish and English words and the task was to determine whether any given word had been seen earlier in the testing session, irrespective of the language in which it had appeared. Recordings in the left and right hippocampus revealed notable laterality, whereby both Spanish and English items that had been seen previously in the other language (switch trials) triggered increased neural firing in the left hippocampus. Items that had been seen previously in the same language (repeat trials) triggered increased neural firings in the right hippocampus. These results are consistent with theories that propose roles of both the left- and right-hemisphere in real-time linguistic processing. Importantly, this experiment presents the first instance of intracranial recordings in bilinguals performing a task with switching demands.
Collapse
Affiliation(s)
- Erika K. Hussey
- Cognitive Science Team, U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, Massachusetts, United States of America
- Center for Applied Brain and Cognitive Sciences, Medford, Massachusetts, United States of America
- Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana, Illinois, United States of America
| | - Kiel Christianson
- Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana, Illinois, United States of America
- Department of Educational Psychology, University of Illinois, Champaign, Illinois, United States of America
| | - David M. Treiman
- Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona, United States of America
| | - Kris A. Smith
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, United States of America
| | - Peter N. Steinmetz
- Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona, United States of America
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, United States of America
- Nakamoto Brain Research Institute, Tempe, Arizona, United States of America
| |
Collapse
|
42
|
Bakhtiari R, Cummine J, Reed A, Fox CM, Chouinard B, Cribben I, Boliek CA. Changes in brain activity following intensive voice treatment in children with cerebral palsy. Hum Brain Mapp 2017; 38:4413-4429. [PMID: 28580693 DOI: 10.1002/hbm.23669] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 05/02/2017] [Accepted: 05/18/2017] [Indexed: 12/13/2022] Open
Abstract
Eight children (3 females; 8-16 years) with motor speech disorders secondary to cerebral palsy underwent 4 weeks of an intensive neuroplasticity-principled voice treatment protocol, LSVT LOUD® , followed by a structured 12-week maintenance program. Children were asked to overtly produce phonation (ah) at conversational loudness, cued-phonation at perceived twice-conversational loudness, a series of single words, and a prosodic imitation task while being scanned using fMRI, immediately pre- and post-treatment and 12 weeks following a maintenance program. Eight age- and sex-matched controls were scanned at each of the same three time points. Based on the speech and language literature, 16 bilateral regions of interest were selected a priori to detect potential neural changes following treatment. Reduced neural activity in the motor areas (decreased motor system effort) before and immediately after treatment, and increased activity in the anterior cingulate gyrus after treatment (increased contribution of decision making processes) were observed in the group with cerebral palsy compared to the control group. Using graphical models, post-treatment changes in connectivity were observed between the left supramarginal gyrus and the right supramarginal gyrus and the left precentral gyrus for the children with cerebral palsy, suggesting LSVT LOUD enhanced contributions of the feedback system in the speech production network instead of high reliance on feedforward control system and the somatosensory target map for regulating vocal effort. Network pruning indicates greater processing efficiency and the recruitment of the auditory and somatosensory feedback control systems following intensive treatment. Hum Brain Mapp 38:4413-4429, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Reyhaneh Bakhtiari
- Communication Sciences and Disorders, University of Alberta, Alberta, Canada
| | - Jacqueline Cummine
- Communication Sciences and Disorders, University of Alberta, Alberta, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Alberta, Canada
| | - Alesha Reed
- Communication Sciences and Disorders, University of Alberta, Alberta, Canada
| | - Cynthia M Fox
- National Center for Voice and Speech, Denver Center for Performing Arts, University of Colorado-Boulder, Colorado.,LSVT Global, Inc, Tucson, Arizona
| | - Brea Chouinard
- Rebilitation Sciences, Faculty of Rehabilitation Medicine, University of Alberta, Alberta, Canada
| | - Ivor Cribben
- Neuroscience and Mental Health Institute, University of Alberta, Alberta, Canada.,Department of Finance and Statistical Analysis, University of Alberta, Alberta, Canada
| | - Carol A Boliek
- Communication Sciences and Disorders, University of Alberta, Alberta, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Alberta, Canada
| |
Collapse
|
43
|
Tzourio-Mazoyer N, Mazoyer B. Variations of planum temporale asymmetries with Heschl's Gyri duplications and association with cognitive abilities: MRI investigation of 428 healthy volunteers. Brain Struct Funct 2017; 222:2711-2726. [PMID: 28164245 DOI: 10.1007/s00429-017-1367-5] [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: 09/29/2016] [Accepted: 01/08/2017] [Indexed: 12/11/2022]
Abstract
In a large sample of 428 healthy adults balanced for gender and manual preference (MP), we investigated planum temporale (PT) surface area variability in relation with Heschl's gyrus (HG) duplication pattern, MP, and familial sinistrality (FS), considering different PT definitions. In a sub-sample of 362 participants, we also investigated whether variability of PT asymmetry was associated with differences in verbal abilities. On each participant brain hemisphere MRI, we delineated a posterior PT area (PTpost), excluding the second Heschl gyrus in case of either complete posterior duplication (CPD) or common stem partial duplication (CSD). We then defined a total PT area (PTtot) as the union of PTpost and of the second HG when present, and a HGPT area as the union of PTtot and of the first HG. The HG duplication pattern of one hemisphere was found to significantly affect the PTpost surface area of the same hemisphere, a larger reduction being present in case of CPD than in case of CSD, leading to a strong impact of both left and right HG duplication patterns on PTpost asymmetry. The HG duplication pattern had no effect on PTtot surface areas, while a significant effect of the left HG duplication was present on PTtot asymmetry that was larger in case of a CSD as compared to a single HG. By contrast, the type of HG duplication did not affect HGPT and neither left nor right HG duplication pattern had an effect on HGPT asymmetry. Meanwhile, MP had no effect on PTpost, PTtot, HGPT, or their asymmetries. The absence of a left PTpost was associated with existence of FS (FS+) (7FS+ among nine without PTpost). Removing the nine individuals lacking PTpost, a lower left PTpost surface area was observed in FS+ participants with left CPD. In the sub-sample of 362 participants, we observed a significant interaction between PTpost asymmetry and cognitive abilities due to poorer lexical performances in individuals having a symmetric PTpost as compared to individuals having either a leftward or a rightward asymmetric PTpost. By contrast, there was no significant effect of PTtot or HGPT asymmetry on cognitive abilities. This study shows that HG duplication pattern mainly affects the surface area of the most posterior part of PT and its asymmetry, this PTpost area being specifically associated with variability in verbal performances. This study also shows, for the first time, an association between decreased performances and lack of PTpost anatomical asymmetry, being rightward asymmetrical having no deleterious effect on verbal abilities, thereby supporting the idea that anatomical lateralization is necessary for optimal verbal performances.
Collapse
Affiliation(s)
- Nathalie Tzourio-Mazoyer
- Univ. Bordeaux, IMN, UMR 5293, 33000, Bordeaux, France. .,CNRS, IMN, UMR 5293, 33000, Bordeaux, France. .,CEA, GIN, IMN, UMR 5293, 33000, Bordeaux, France. .,IMN Institut des Maladies Neurodégénératives UMR 5293, Team 5: GIN Groupe d'Imagerie Neurofonctionnelle, CEA-CNRS-Université de Bordeaux, 146 rue Léo Saignat-CS 61292-Case 28, 33076, Bordeaux cedex, France.
| | - B Mazoyer
- Univ. Bordeaux, IMN, UMR 5293, 33000, Bordeaux, France.,CNRS, IMN, UMR 5293, 33000, Bordeaux, France.,CEA, GIN, IMN, UMR 5293, 33000, Bordeaux, France.,IMN Institut des Maladies Neurodégénératives UMR 5293, Team 5: GIN Groupe d'Imagerie Neurofonctionnelle, CEA-CNRS-Université de Bordeaux, 146 rue Léo Saignat-CS 61292-Case 28, 33076, Bordeaux cedex, France
| |
Collapse
|
44
|
Identical, similar or different? Is a single brain model sufficient? Cortex 2017; 86:172-175. [DOI: 10.1016/j.cortex.2016.12.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 12/02/2016] [Indexed: 11/16/2022]
|
45
|
Affiliation(s)
- Nathalie Tzourio-Mazoyer
- IMN UMR 5293 CNRS, Bordeaux, France; IMN UMR 5293 Université de Bordeaux, Bordeaux, France; IMN UMR 5293 CNRS, GIN CEA, France.
| | | |
Collapse
|