Accession Number : ADA334331

Title :   Sex Differences in Susceptibility and Resistance to Noise- Induced Hearing Loss in Chinchillas.

Descriptive Note : Annual rept. 23 Sep 96-22 Sep 97.

Corporate Author : STATE UNIV OF NEW YORK AT BUFFALO AMHERST

Personal Author(s) : McFadden, Sandra L.

PDF Url : ADA334331

Report Date : OCT 1997

Pagination or Media Count : 32

Abstract : Noise-induced hearing loss (NIHL) is a major occupational hazard for military personnel. Although considerable evidence points to gender differences in susceptibility to NIHL, the precise nature of these differences, and how they apply to the types of noise characteristic of military settings is currently unknown. During Year 1, experiments were conducted with chinchillas to examine sex differences in (a) basic auditory sensitivity; (b) susceptibility to temporary and permanent threshold shifts (TTS and PTS, respectively) caused by exposure to simulated Ml6 rifle fire; (c) TTS and PTS caused by exposure to 0.5 kHz octave band noise and UH-60 Blackhawk helicopter noise; and (d) the ability to benefit from prophylactic "conditioning" exposures. The results of these initial experiments point to sex differences in the response of the cochlea to noise, which could have important implications for military assigments and hearing conservation programs.

Descriptors :   *THRESHOLD EFFECTS, *SENSITIVITY, *NOISE, *COCHLEA, *AUDITORY DEFECTS, MILITARY PERSONNEL, HELICOPTERS, SHIFTING, CONSERVATION, RODENTS, HEARING, SEX, RESISTANCE(BIOLOGY), AIRCRAFT NOISE.

Subject Categories : Anatomy and Physiology
      Stress Physiology
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE