Representation of visuotactile space in the split brain.
Psychol Sci
; 12(1): 90-3, 2001 Jan.
Article
in En
| MEDLINE
| ID: mdl-11294236
ABSTRACT
Recent neurophysiological research in the monkey has revealed bimodal neuronal cells with both tactile receptive fields on the hand and visual receptive fields that follow the hands as they move, suggesting the existence of a bimodal map of visuotactile space. Using a cross-modal congruency task, we examined the representation of visuotactile space in normal people and in a split-brain patient (J. W.) as the right arm assumed different postures. The results showed that the congruency effects from distracting lights followed the hand around in space in normal people, but failed to do so in the split-brain patient when the hand crossed the midline. This suggests that cross-cortical connections are required to remap visual space to the current hand position when the hand crosses the midline.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Touch
/
Visual Perception
/
Corpus Callosum
/
Epilepsy
Limits:
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Psychol Sci
Journal subject:
PSICOLOGIA
Year:
2001
Document type:
Article
Affiliation country:
United kingdom