✦ LIBER ✦

The effects of selective hippocampal damage on tests of oddity in rhesus macaques

✍ Scribed by Maria C. Alvarado; Andy Kazama; Alyson Zeamer; Jocelyne Bachevalier

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 479 KB
Volume: 21
Category: Article
ISSN: 1050-9631
DOI: 10.1002/hipo.20827

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✦ Synopsis

Abstract

The oddity task (e.g., A−, A−, B+) is classified as a conjunctive or relational task in which accurate performance depends upon learning to attend to stimulus relationships, not stimulus identity, and has no retention component as stimuli are presented simultaneously. It has been suggested that the hippocampus may play a particular role in learning this type of task in humans and animals. To test this, we trained adult rhesus macaques with selective neurotoxic damage to the hippocampal formation on their ability to learn and apply an oddity rule. The results suggest that the monkeys were able to adapt simple strategies to solve variations of the oddity task, however as the opportunity for such strategies was reduced, monkeys with hippocampal damage were increasingly impaired. © 2010 Wiley‐Liss, Inc.

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