Impulse and impact noise are important factors in the production of hearing loss in industrial and military settings. This project continues to have three objectives: (1) establish the relation between the acoustic parameters of an impulse i.e., intensity, repetition rate, rise-time, spectrum, number of impulses and the resultant hearing loss; (2) document the sequence of changes associated with exposure to impulse/impact noise using electrophysiological and anatomical techniques; (3) document the audiological changes associated with exposure to impulse/impact noise with an electrophysiological test battery i.e., quite thresholds, tuning curves and forward masking functions. All these experiments are to be conducted on chinchillas using experimental procedures that are well developed. The significance of this project is that it will be possible to establish future scientifically based noise standards using the results of our systematic parametric studies of impulse and impact noise. In particular, the results will address the appropriateness of the Equal Energy Hypothesis for impulse/impact noise.

Agency
National Institute of Health (NIH)
Institute
National Institute for Occupational Safety and Health (NIOSH)
Type
Research Project (R01)
Project #
3R01OH001152-09S1
Application #
3420106
Study Section
Hearing Research Study Section (HAR)
Project Start
1987-09-27
Project End
1990-09-28
Budget Start
1988-09-29
Budget End
1990-09-28
Support Year
9
Fiscal Year
1990
Total Cost
Indirect Cost
Name
State University of New York at Buffalo
Department
Type
Schools of Arts and Sciences
DUNS #
038633251
City
Buffalo
State
NY
Country
United States
Zip Code
14260
Arehole, S; Salvi, R J; Saunders, S S et al. (1989) Evoked-response forward-masking functions in chinchillas with noise-induced permanent hearing loss. Audiology 28:92-110
Arehole, S; Salvi, R J; Saunders, S S et al. (1987) Evoked response 'forward masking' patterns in chinchillas with temporary hearing loss. Hear Res 27:193-205