Profiles of right hemisphere language and speech following brain bisection
Abstract
A variety of language tasks were administered to two patients who had undergone staged callosal section in an effort to control otherwise intractable epilepsy. Right hemisphere lexical capacity varied and preliminary results suggest that the case displaying greater semantic power also possessed some syntactic competence. This same case (V.P.) was also capable of expressive language from the right hemisphere. This rare capacity allowed for fresh observations on the dynamic interactions of conscious control that occur in this kind of patient.
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Some callosotomy patients have shown increasing ability to verbalize LVF materials between 12 and 30 months postoperatively.
“and an increasing ability to verbalize LVF materials between 12 and 30 months postoperatively (Gazzaniga et ai, 1984).”
From Collaboration between the hemispheres of a callosotomy patient: Emerging right hemisphere speech and the left hemisphere interpreter (1996) · cites this paper as Gazzaniga et al., 1984
MRI has confirmed the completeness of callosal section in J.W.
“and MRI has confirmed the completeness of callosal section (Gazzaniga et al., 1984).”
From Collaboration between the hemispheres of a callosotomy patient: Emerging right hemisphere speech and the left hemisphere interpreter (1996) · cites this paper as Gazzaniga et al., 1984
J.W.'s present capacity to name left field stimuli is comparable with the naming capacities of certain other patients who have undergone callosal section.
“Overall, J.W.'s present capacity to name left field stimuli is comparable with the naming capacities of certain other patients who have undergone callosal section (Gazzaniga et al., 1979(Gazzaniga et al., , 1984)).”
From Collaboration between the hemispheres of a callosotomy patient: Emerging right hemisphere speech and the left hemisphere interpreter (1996) · cites this paper as Gazzaniga et al., 1984
J.W.'s responses to LVF stimuli are often the result of a collaboration between his hemispheres.
“This implies that J.W.'s responses to LVF stimuli are often the result of a collaboration between his hemispheres (Gazzaniga et al., 1984).”
From Collaboration between the hemispheres of a callosotomy patient: Emerging right hemisphere speech and the left hemisphere interpreter (1996) · cites this paper as Gazzaniga et al., 1984
In previous cases, the development of right hemisphere speech capability occurred much earlier in the postoperative course.
“In previous cases, however, the development of right hemisphere speech capability occurred much earlier in the postoperative course.”
From Collaboration between the hemispheres of a callosotomy patient: Emerging right hemisphere speech and the left hemisphere interpreter (1996) · cites this paper as Gazzaniga et al., 1984
It seems unlikely that a hemisphere incapable of using syntax to comprehend sentences and phrases would emit elaborate vocalizations.
“However, it seems unlikely that a hemisphere incapable of using syntax to comprehend sentences and phrases (Gazzaniga, et al., 1984, Baynes andGazzaniga, 1988) would emit elaborate vocalizations.”
From Collaboration between the hemispheres of a callosotomy patient: Emerging right hemisphere speech and the left hemisphere interpreter (1996) · cites this paper as Gazzaniga et al., 1984
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- Authors
- Gazzaniga, M. S., Smylie, C. S., Baynes, K., Hirst, W., & McCleary, C.
- Affiliations
- Cornell University (US)
- Princeton University (US)
- Venue
- Brain and Language
- Publisher
- Elsevier BV
- Published
- 1984-07
- Volume
- 22
- Issue
- 2
- Pages
- 206-220
- ISSN
- 0093-934X (ISSN-L)
- OpenAlex
- W1964928586
- Cited by
- 82
- References
- 12
- Citations by year
- 2025: 1 · 2020: 2 · 2018: 1 · 2017: 3 · 2015: 1 · 2014: 2 · 2012: 1
- FWCI
- 1.84
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Brain and Language (publishedVersion)
- PubMed (publishedVersion)
- 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
- right hemisphere language, corpus callosotomy, epilepsy, semantic competence, syntactic competence, expressive language, hemispheric lateralization, conscious control
- MeSH terms
- Adult, Corpus Callosum, Dominance, Cerebral, Epilepsy, Tonic-Clonic, Female, Humans, Language, Male, Pattern Recognition, Visual, Reading, Semantics, Speech, Verbal Behavior, Vocabulary
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