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Updated: Sep 11, 2026

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Published on: August 18, 2014
Neural substrates of crossmodal association memory in monkeys: the amygdala versus the anterior rhinal cortex
1Ecole de Psychologie, Université Laval, Quebec, Canada.
Abstract:
Nine rhesus monkeys were trained on visual, tactual, and crossmodal (tactual-visual) versions of delayed nonmatching-to-sample (DNMS). They then received bilateral aspiration lesions of the anterior rhinal cortex or bilateral excitotoxic lesions of the amygdala or were retained as unoperated controls. Monkeys with anterior rhinal cortex lesions displayed a persistent deficit on crossmodal DNMS as well as a deficit on tactual DNMS. In contrast, monkeys with amygdala lesions exhibited only a transient impairment on crossmodal DNMS, and their difficulty appeared to be related to inadvertent damage to the anterior rhinal cortex. The present findings support the idea that the rhinal cortex is important for the formation and retrieval of stimulus-stimulus associations across sensory modalities.
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