Excitotoxic Lesions of the Amygdala Fail to Produce Impairment in Visual Learning for Auditory Secondary Reinforcement But Interfere with Reinforcer Devaluation Effects in Rhesus Monkeys

This research was supported by the Human Frontiers Scientific Program Organization (E.A.M.) and the National Institute of Mental Health Intramural Research Program. We thank P. Holland and M. Mishkin for valuable comments on an earlier version of this manuscript, W. Hadfield for technical assistance, J. N. Sewell for help with histological processing of the tissue, and the staff of the In Vivo Nuclear Magnetic Resonance Research Center for performing the MRI scans. We thank the United Kingdom Medical Research Council’s Interdisciplinary Research Centre at Oxford University for a travel grant.

Correspondence should be addressed to Dr. Elisabeth A. Murray, Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Building 49, Room 1B80, Bethesda, MD 20892.