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Science 28 September 1973:
Vol. 181. no. 4106, pp. 1256 - 1258
DOI: 10.1126/science.181.4106.1256
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Articles

Behavior of Free-Ranging Macaques after Intraventricular 6-Hydroxydopamine

D. E. Redmond Jr. 1, R. L. Hinrichs 1, J. W. Maas 1, and A. Kling 2

1 Illinois State Psychiatric Institute and University of Illinois College of Medicine, Chicago 60612
2 Department of Psychiatry, Rutgers Medical School, New Brunswick, New Jersey 08854

Macaques (Macaca mulatta) observed in a free-ranging colony on Guayacan Island, Puerto Rico, were significantly different in their social interactions, initiatives, facial expressions, and postures after intraventricular 6-hydroxydopamine compared with sham-treated and field controls. This study extends the known effects of 6-hydroxydopamine and catecholamine depletion to the social interactions of a higher primate species under free-ranging conditions.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)