Bidirectional control of saccadic eye movements by the disconnected cerebral hemispheres

The present investigation demonstrates that callosotomy patient J.W. can generate either leftward or rightward saccades in response to color cues presented unilaterally. When asked to name the colors, performance was at chance for left visual field presentations, demonstrating a disability in interh...

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Bibliographic Details
Published in:Experimental brain research 1992-10, Vol.91 (2), p.335-339
Main Authors: HUGHES, H. C, REUTER-LORENZ, P. A, FENDRICH, R, GAZZANIGA, M. S
Format: Article
Language:English
Subjects:
Biological and medical sciences
Brain - physiology
Color Perception - physiology
Corpus Callosum - physiology
Corpus Callosum - surgery
Cues
Discrimination (Psychology) - physiology
Eye and associated structures. Visual pathways and centers. Vision
Fundamental and applied biological sciences. Psychology
Humans
Male
Saccades - physiology
Vertebrates: nervous system and sense organs
Citations: Items that cite this one
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Summary:The present investigation demonstrates that callosotomy patient J.W. can generate either leftward or rightward saccades in response to color cues presented unilaterally. When asked to name the colors, performance was at chance for left visual field presentations, demonstrating a disability in interhemispheric transfer of chromatic information. The successful control of saccadic direction based on discriminative color cues that appear confined to a single hemisphere may suggest a capacity for bidirectional control of saccadic eye movements in the disconnected cerebral hemispheres.
ISSN:0014-4819
1432-1106
DOI:10.1007/BF00231667