Variations in attentional bias of the disconnected cerebral hemispheres

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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)57-74
Number of pages18
JournalCognitive Neuropsychology
Volume11
Issue number1
DOIs
StatePublished - 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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