The elffects of control over high intensity noise on plasma cortisol levels in rhesus moneksy.
Publication Type: |
Journal Article |
Year of Publication: |
1976 |
Authors: |
J.D. Hanson, M.E. Larson, C.T. Snowdon |
Publication/Journal: |
Behavioral Biology |
Keywords: |
control of noise, high intensity noise, plasma-cortisol, rhesus monkey |
Abstract:
The effects of control over exposure to high intensity noise on plasma cortisol levels and social behaviors were examined in rhesus monkeys. There were four conditions: control over noise, loss of control over noise, no control over noise, and no noise. Plasma cortisol data indicated that animals with control over high intensity noise stimulation did not differ from animals exposed to no noise at all. Plasma cortisol levels were significantly elevated in animals with no control over high intensity noise and in animals experiencing a loss of control over noise. Animals which experienced loss of control over noise showed increased aggressive behavior while animals with no control over noise showed significantly less social contact than other animals.