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Processing of form stimuli presented unilaterally in humans, chimpanzees (Pan troglodytes), and monkeys (Macaca mulatta)Visual forms were unilaterally presented using a video-task paradigm to ten humans, chimpanzees, and two rhesus monkeys to determine whether hemispheric advantages existed in the processing of these stimuli. Both accuracy and reaction time served as dependent measures. For the chimpanzees, a significant right hemisphere advantage was found within the first three test sessions. The humans and monkeys failed to show a hemispheric advantage as determined by accuracy scores. Analysis of reaction time data revealed a significant left hemisphere advantage for the monkeys. A visual half-field x block interaction was found for the chimpanzees, with a significant left visual field advantage in block two, whereas a right visual field advantage was found in block four. In the human subjects, a left visual field advantage was found in block three when they used their right hands to respond. The results are discussed in relation to recent reports of hemispheric advantages for nonhuman primates.
Document ID
19910035576
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hopkins, William D.
(Georgia State Univ. Atlanta, GA, United States)
Washburn, David A.
(Georgia State Univ. Atlanta, GA, United States)
Rumbaugh, Duane M.
(Georgia State University; Emory University, Atlanta, United States)
Date Acquired
August 15, 2013
Publication Date
August 1, 1990
Publication Information
Publication: Behavioral Neuroscience
Volume: 104
ISSN: 0735-7044
Subject Category
Life Sciences (General)
Accession Number
91A20199
Funding Number(s)
CONTRACT_GRANT: NIH-RR-00165
CONTRACT_GRANT: NAG2-438
Distribution Limits
Public
Copyright
Other

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