Date of Award

1-1-1984

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Psychology

Abstract

In order to test the effect of cortisol on auditory thresholds, seventy-five volunteer right-handed college males were given either a 10 mg, 20 mg, 40 mg dose of hydrocortisone, or placebo, or were part of a control group in a double blind design. Right ear auditory thresholds were determined for frequencies of 500, 1,000, 4,000 and 8,000 Hz using the method of limits. The results were converted to mean threshold change scores by using threshold scores obtained for the same subject prior to treatment. Results indicated that treatment with 20 mg of cortisol reduced sensitivity at 8,000 Hz as compared to the controls. The findings suggest that cortisol does alter perceptual functioning in normal adult males and recommended further research in the area.

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