Variations in attentional bias of the disconnected cerebral hemispheres

Elisabetta Ladavas; Maria Del Pesce; George R Mangun; Michael S. Gazzaniga

doi:10.1080/02643299408251966

Variations in attentional bias of the disconnected cerebral hemispheres

Elisabetta Ladavas, Maria Del Pesce, George R Mangun, Michael S. Gazzaniga

Neurology

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The research presented in this paper investigates differences in the hemispheric control of attention. In particular, the contribution of environmental as well as egocentric co-ordinates to the speed of responses to attended visual stimuli is considered. Five patients with complete section of the corpus callosum were tested under conditions that allow hemispheric sensitivity to environmental and egocentric co-ordinates to be examined separately. We conclude that each hemisphere can direct attention in the contraversive direction in both egocentric and environmental co-ordinate space. Additionally, right-hemisphere dominance for maintenance of alertness is supported. These results are discussed in the context of neurophysiological data and current theories of attention.

Original language	English (US)
Pages (from-to)	57-74
Number of pages	18
Journal	Cognitive Neuropsychology
Volume	11
Issue number	1
DOIs	https://doi.org/10.1080/02643299408251966
State	Published - Feb 1 1994

ASJC Scopus subject areas

Arts and Humanities (miscellaneous)
Cognitive Neuroscience
Developmental and Educational Psychology
Experimental and Cognitive Psychology
Neuropsychology and Physiological Psychology

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