Gap Detection in Hearing-Impaired Chinchillas

Details

• Personal Author:
  Giraudi-Perry DM ; Henderson D ; Salvi RJ
• Description:
  Auditory temporal resolution is known to deteriorate with sensorineural hearing loss; however, there is considerable intersubject variability in human studies. The purpose of the present study was to obtain measures of temporal resolution in the chinchilla as the degree of noise-induced hearing loss was systematically varied. Gap-detection thresholds, a measure of temporal resolution, were evaluated at four levels of noise-induced asymptotic threshold shift (ATS). Gap thresholds were normal when the pure-tone thresholds were elevated approximately 15 dB. With a hearing loss of approximately 30 dB, the gap thresholds were longer than normal if compared at the same sound pressure level, but within normal limits if compared at the same sensation level. When the hearing loss exceeded 40 dB, gap thresholds were longer than normal both in terms of sound pressure level and sensation level. These results show that there is an orderly breakdown in temporal resolution as the degree of noise-induced ATS increases. The results are related to neural data and models of temporal resolution. [Description provided by NIOSH]
• Subjects:
  Animals Hearing Hearing Loss Hearing Loss, Noise-Induced Noise Noise, Occupational Occupational Health Safety
• Keywords:
  Animal Studies Auditory System Exposure Assessment Hearing Impairment Hearing Threshold Noise Induced Hearing Loss
• ISSN:
  0001-4966
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  New York ; OSHA Region 2 ; OSHA Region 6 ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  72
• Issue:
  5
• NIOSHTIC Number:
  nn:20061006
• Citation:
  J Acoust Soc Am 1982 Nov; 72(5):1387-1393
• Federal Fiscal Year:
  1983
• Performing Organization:
  Upstate Medical Center, Syracuse, New York
• Peer Reviewed:
  True
• Start Date:
  19720501
• Source Full Name:
  Journal of the Acoustical Society of America
• End Date:
  19800630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4bfa8e57ea3e021be38a2d4b70f533a201777ac908b58980accce967d991cb7846f0a3bea0dcff6bbe26e31814d524569944a0c66f08d54a683f1b596f3e8ff0
• Download URL:
  https://stacks.cdc.gov/view/cdc/224712/cdc_224712_DS1.pdf
• File Type:
  [PDF - 852.64 KB ]