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. 1978 Aug 25;201(4357):753-4.
doi: 10.1126/science.97785.

Localization of primate calls by old world monkeys

Localization of primate calls by old world monkeys

C H Brown et al. Science. .

Abstract

Monkeys (Macaca) were trained by operant conditioning techniques to report the minimum detectable change in location of a sound in space, and were tested with a series of recorded coo or clear call vocalizations. Acuity of localization varied from approximately 4 degrees to 15 degrees and was a function of the magnitude of the change in pitch (frequency modulation) of the different clear calls.

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