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The Cognitive Neuroscience of MindA Tribute to Michael S. Gazzaniga$
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Patricia A. Reuter-Lorenz, Kathleen Baynes, George R. Mangun, and Elizabeth A. Phelps

Print publication date: 2010

Print ISBN-13: 9780262014014

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262014014.001.0001

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Interhemispheric Cooperation Following Brain Bisection

Interhemispheric Cooperation Following Brain Bisection

Chapter:
(p.25) 2 Interhemispheric Cooperation Following Brain Bisection
Source:
The Cognitive Neuroscience of Mind
Author(s):

Steven A. Hillyard

Publisher:
The MIT Press
DOI:10.7551/mitpress/9780262014014.003.0019

Mike Gazzaniga, along with his colleagues Roger W. Sperry and Joseph Bogen, revealed that the two separate mental systems, one in each hemisphere, were created by the surgical bisection of the forebrain. This was based on the neuropsychological studies of split-brain patients who had undergone cerebral commissurotomy. Gazzaniga found that the left and right hemispheres had distinct cognitive specializations: The left was capable of processing language and logic functions, whereas the right had a specialization in visual pattern perception and spatial relationships. The scientists also mentioned that these disparate functions of the two hemispheres could be integrated through the corpus callosum, which would ultimately produce a unified conscious mind. This chapter sheds light on these findings, and explores how these two separated hemispheres work and interact.

Keywords:   split-brain patients, mental systems, left hemisphere, right hemisphere, cognitive specializations

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