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ERIC Number: EJ754909
Record Type: Journal
Publication Date: 2007
Pages: 14
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0033-2933
EISSN: N/A
Rhesus Monkeys (Macaca Mulatta) Maintain Learning Set Despite Second-Order Stimulus-Response Spatial Discontiguity
Beran, Michael J.; Washburn, David A.; Rumbaugh, Duane M.
Psychological Record, v57 n1 p9 Win 2007
In many discrimination-learning tests, spatial separation between stimuli and response loci disrupts performance in rhesus macaques. However, monkeys are unaffected by such stimulus-response spatial discontiguity when responses occur through joystick-based computerized movement of a cursor. To examine this discrepancy, five monkeys were tested on a learning-set task that required them to touch computer-graphic "levers" (which differed in location across experimental phases) with a cursor in order to select an associated test stimulus. The task produced both first-order (joystick and lever) and second-order (lever and stimuli) spatial discontiguity between the stimuli to be discriminated and the discriminative response. Performance was significantly better than chance for all lever locations including locations in which selection of the correct lever required moving the cursor away from the positive stimulus. Thus, rhesus macaques do not attend simply to the region around the cursor in these computerized tests, but rather they attend to relevant stimulus loci even when these are discontiguous with response and reward areas. (Contains 4 figures.)
Psychological Record. 214 North Acland Street, Kenyon College, Gambier, OH 43022. Tel: 740-427-5377; Fax: 740-427-5390; Web site: http://www.thepsychologicalrecord.org/subscriptions.htm
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A