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Title:The Cerebral Hemispheres Cooperate to Perform Complex but Not Simple Tasks
Author(s):Weissman, Daniel Howard
Doctoral Committee Chair(s):Banich, Marie T.
Department / Program:Psychology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Psychology, Psychobiology
Abstract:In four experiments, we examined whether task complexity determines the degree to which a division of processing across the hemispheres (i.e., across-hemisphere processing) underlies performance when within- and across-hemisphere processing are equally possible. When task complexity was relatively low, performance in a midline condition (which allowed for either within- or across-hemispheric processing) resembled within-hemisphere performance (Exps. 1 & 2). However, when task complexity was high, performance in a midline condition (Exps. 1 & 2) and a lateralized condition (which also allowed for either within- or across-hemisphere processing) (Exp. 3), resembled across-hemisphere performance. Our results complement and extend prior work (e.g., Banich & Belger, 1990) by indicating that the degree to which interhemispheric cooperation underlies performance changes with the complexity of the task being performed. This finding suggests that the hemispheres couple or uncouple their processing as a function of task complexity.
Issue Date:1999
Description:100 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999.
Other Identifier(s):(MiAaPQ)AAI9953174
Date Available in IDEALS:2015-09-25
Date Deposited:1999

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