Document Detail

Interhemispheric comparisons in a man with complete forebrain commissurotomy.
MedLine Citation:
PMID:  11055254     Owner:  NLM     Status:  MEDLINE    
J. Sergent (1991) claimed that split-brained people are highly accurate in judging which is the larger of 2 circles in opposite visual hemifields but are relatively poor at judging whether circles in the 2 hemifields are of the same size. The discrepancy could be due, at least in part, to an artifact. A split-brained man, L.B., was markedly worse than normals at judging which was the larger of 2 circles or the longer of 2 horizontal lines in opposite hemifields, and his performance could be largely accounted for without assuming any interhemispheric transfer. L.B. also judged whether a single flashed line extended further into the left or right hemifield and, as in a previous study (M. C. Corballis, 1995), was strongly biased to respond "right longer." This bias was not observed in the judgments about the circles or the separated lines, suggesting that it is not due to a compression of perceived space in the left hemifield.
M C Corballis; A McLean
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Publication Detail:
Type:  Case Reports; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuropsychology     Volume:  14     ISSN:  0894-4105     ISO Abbreviation:  Neuropsychology     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2001-02-08     Completed Date:  2001-02-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8904467     Medline TA:  Neuropsychology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  519-25     Citation Subset:  IM    
Research Centre for Cognitive Neuroscience, University of Auckland, New Zealand.
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MeSH Terms
Cognition Disorders / diagnosis*
Corpus Callosum / surgery*
Functional Laterality / physiology*
Middle Aged
Neurosurgical Procedures
Prosencephalon / physiopathology*,  surgery*
Wechsler Scales

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