Accession Number : AD0711636

Title :   COMBINED EFFECTS OF NOISE AND VIBRATION ON MENTAL PERFORMANCE AS A FUNCTION OF TIME OF DAY.

Descriptive Note : Final rept. Feb 69-Mar 70,

Corporate Author : AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Sommer,Henry C. ; Harris,C. Stanley

Report Date : JUL 1970

Pagination or Media Count : 20

Abstract : To determine the combined effects of noise and vibration on mental performance as a function of time of day, subjects were randomly exposed to each of the following conditions: stress (5 Hz vibration, 110 dB noise) at 6 AM; no stress (no vibration - 85 dB noise) at 6 AM; stress at 3 PM; and no stress at 3 PM. Subjects' performance on a mental arithmetic task was measured during each of these exposures on consecutive days. The average exposure time was approximately 20 minutes. The results are discussed in the context of arousal theory. (Author)

Descriptors :   (*PSYCHOPHYSICS, *VIBRATION), (*PERFORMANCE(HUMAN), *NOISE), PSYCHOLOGICAL TESTS, STATISTICAL DATA, DIURNAL VARIATIONS, TEST METHODS, EXPOSURE(PHYSIOLOGY), STRESS(PSYCHOLOGY)

Subject Categories : Psychology
      Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE