Accession Number:

ADA172467

Title:

Blast Trauma. The Effect on Hearing.

Descriptive Note:

Final rept. 1 Aug 80-31 Jul 83,

Corporate Author:

TEXAS UNIV AT DALLAS CALLIER CENTER FOR COMMUNICATION DISORDERS

Personal Author(s):

• Hamernik,Roger P.
• Salvi,Richard J.
• Henderson,Donald

Report Date:

1983-07-01

Pagination or Media Count:

339.0

Abstract:

The purpose of this research was to study the effects of impulse noise blast trauma on auditory function. The impulse noise was produced by a compressed air-driven shock tube the exposures were varied to produce a range of cochlear lesions. The effects of impulse noise was studied by measuring 1 changes in pure tone thresholds and tuning curves obtained behaviorally or with the auditory evoked response, 2 changes in the thresholds and tuning curves of single auditory nerve fibers, 3 changes in cochlear anatomy as determined by light and electron microscopy. The goal of the study was to relate the audiometric and physiological data with the cochlear pathologies in order to understand the nature of auditory pathologies produced by exposure to blast waves. Keywords Hearing loss Hair cells and Evoked response.

Descriptors:

• *PHYSIOLOGICAL EFFECTS
• *HEARING
• *TRAUMA
• COMPRESSION
• EXPERIMENTAL DATA
• CELLS
• BLAST WAVES
• ELECTRON MICROSCOPY
• PATHOLOGY
• IMPULSE NOISE
• ANATOMY
• EXPOSURE(PHYSIOLOGY)
• BLAST
• LESIONS
• SHOCK TUBES
• AUDIOMETRY
• COCHLEA
• DEAFNESS
• NERVE FIBERS
• HAIR

Subject Categories:

• Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE