Accession Number : AD0449855

Title :   A STUDY OF THE ACOUSTIC REFLEX IN INFANTRYMEN,

Corporate Author : BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA

Personal Author(s) : Hecker, Michael H. L. ; Kryter, Karl D.

Report Date : 01 OCT 1964

Pagination or Media Count : 9

Abstract : The degree of reflex response to monaurally presented white noise (100 dB SPL) was measured and graphically recorded at the contralateral ear for 40 career infantrymen with an acoustic bridge. These soldiers had been exposed to controlled amounts of weapon noise, and pre- and post-exposure audiograms were obtained. The results show that subjects with a high-preexposure HL are l ss susceptible to TTS than subjects with normal hearing. The results further indicate that a strong acoustic reflex is associated with high rather than low pre-exposure HL for subjects having no appreciable conductive hearing impairment. Subjects with suspected middle-ear disorders exhibited no reflex response to the same stimulus. (Author)

Descriptors :   (*ACOUSTICS, MOTOR REACTIONS), (*MILITARY PERSONNEL, MOTOR REACTIONS), REFLEXES, PSYCHOLOGY, HEARING, NOISE, EAR, WEAPONS, STIMULATION(PHYSIOLOGY), MEASUREMENT, INSTRUMENTATION, PATHOLOGY, AUDIOMETRY, AUDITORY PERCEPTION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE