Cited by 68Hemispheric Asymmetry in NeuroscienceNeurobiology of Language and BilingualismLanguage Development and Disorders

Language Hemispheric Dominance in Patients with Congenital Lesions of Eloquent Brain

Vikingstad, Eric M., Cao, Yue, Thomas, Ajith J., Johnson, Alex F., Malik, Ghaus M., Welch, Kenneth M. A.·2000·Neurosurgery

Abstract

OBJECTIVE: In 90% of normal subjects, the left hemisphere is dominant for language function. We investigated whether congenital lesions of the left perisylvian regions altered cortical language representation in right-handed individuals. METHODS: Using functional magnetic resonance imaging, we studied language hemispheric dominance in five right-handed adult patients with congenitally acquired arteriovenous malformations (AVMs) originating from left hemispheric cortical language regions. The AVMs had not caused neurological symptoms during early development, but patients presented as adults with migraine, seizure, or minor hemorrhage. Results obtained from the AVM patients were contrasted to those from right-handed brain-injured stroke patients recovering from aphasia and to those from right-handed normal subjects. RESULTS: During silent picture naming and verb generation tasks, cortical language networks lateralized primarily to the right hemisphere in the AVM group, compared with the left hemisphere in the normal group. This right hemisphere-shifted language network in the AVM group exceeded the shifts toward right hemispheric dominance found in the stroke group. CONCLUSION: Patients with AVMs affecting the left perisylvian regions recruited the right hemisphere into language processing networks during early development, presumably in response to congenitally aberrant circulation. This early right hemisphere recruitment in the AVM patients exceeded the similar process in the brains of stroke patients whose left cortical language networks were damaged in adulthood. Our data provide evidence of effective plasticity in the developing human brain compared with the mature brain response to injury. Knowledge of cortical language representation should assist presurgical planning in patients with developmental anomalies affecting apparently language-dominant brain regions.

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Crossref · 10.1227/00006123-200009000-00004

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42 of 42 references verified0 citation errors · 0 not checkable

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  • Previous research on recovery of function after brain injury has shown that, in the face of left hemisphere damage, the right hemisphere can increase its activity in a compensatory manner.

    “Previous research on recovery of function after brain injury has shown that, in the face of left hemisphere damage, the right hemisphere can increase its activity in a compensatory manner (16–18).”
  • The results are consistent with studies of recovery of function after left hemisphere damage showing increased activity in right hemisphere homologues of left hemisphere language areas associated with improved language ability.

    “These results are consistent with studies of recovery of function after left hemisphere damage that have shown increased activity in right hemisphere homologues of left hemisphere language areas associated with improved language ability (16–18).”

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Authors
Vikingstad, E. M., Cao, Y., Thomas, A. J., Johnson, A. F., Malik, G. M., & Welch, K. M. A.
Affiliations
  • Henry Ford Health (US)
  • University of Kansas Medical Center (US)
Venue
Neurosurgery
Published
2000-09
Volume
47
Issue
3
Pages
562-570
ISSN
0148-396X (ISSN-L)
OpenAlex
W1974998084
Cited by
68
References
42
Citations by year
2023: 1 · 2021: 1 · 2020: 4 · 2019: 2 · 2018: 2 · 2017: 4 · 2016: 2 · 2015: 4 · 2014: 1 · 2013: 5 · 2012: 4
FWCI
2.11
Type
journal article
Language
en
Open access
closed
Locations
  • Neurosurgery (publishedVersion)
  • PubMed (publishedVersion)
Funders
American Heart Association
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Hemispheric Asymmetry in Neuroscience
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
  • Social Sciences › Psychology › Developmental and Educational Psychology › Language Development and Disorders
Keywords
congenital arteriovenous malformation, aphasia, stroke, neuroplasticity, presurgical planning, right-handedness
MeSH terms
Adult, Brain Damage, Chronic, Brain Mapping, Intracranial Arteriovenous Malformations, Cerebral Cortex, Dominance, Cerebral, Female, Humans, Language Disorders, Magnetic Resonance Imaging, Male, Middle Aged, Nerve Net, Reference Values

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