Behavioral Effects of Chronic Exposure to Impulsive Noise in Primates.

摘要

Two young female chimpanzees were exposed to 35 impulsive acoustic stimuli each night for 180 consecutive nights. Daytime performance on a temporal discrimination psychomotor task deteriorated following initiation of the acoustic exposures. Adaptation to baseline performance was observed for one subject and suggested for the other. Both exhibited preexposure performance after the impulses ceased. Cage movements were measured for both subjects in response to every impulse noise presentation over the 180 days. The study demonstrated performance decrements which showed adaptation over time as well as general behavior changes and sleep interference which did not show adaptation over 180 days. All behavioral changes which occurred during the exposure disappeared after the noise exposures were terminated. (Author)