Abstract
The influence of periodic sound programs on the runningwheel activity of the golden hamster was investigated. The hamsters were kept in constant darkness in sound‐isolated boxes (insulation up to 80 dB). Random white noise was used; the frequency ranging from 50 Hz to 15 kHz or up to 50 kHz with an intensity of mostly about 90 dB re 0,0002 dyn/cm2.