Generalizability of Clinically Measured Acoustic Reflexes to Brief Sounds

Details

• Personal Author:
  Ahroon WA ; Deiters KK ; Flamme, Gregory A. ; Greene NT ; Jones HG ; Murphy, William J. ; Tasko SM
• Description:
  Middle ear muscle contractions (MEMC) can be elicited in response to high-level sounds, and have been used clinically as acoustic reflexes (ARs) during evaluations of auditory system integrity. The results of clinical AR evaluations do not necessarily generalize to different signal types or durations. The purpose of this study was to evaluate the likelihood of observing MEMC in response to brief sound stimuli (tones, recorded gunshots, noise) in adult participants (N = 190) exhibiting clinical ARs and excellent hearing sensitivity. Results revealed that the presence of clinical ARs was not a sufficient indication that listeners will also exhibit MEMC for brief sounds. Detection rates varied across stimulus types between approximately 20% and 80%. Probabilities of observing MEMC also differed by clinical AR magnitude and latency, and declined over the period of minutes during the course of the MEMC measurement series. These results provide no support for the inclusion of MEMC as a protective factor in damage-risk criteria for impulsive noises, and the limited predictability of whether a given individual will exhibit MEMC in response to a brief sound indicates a need to measure and control for MEMC in studies evaluating pharmaceutical interventions for hearing loss. [Description provided by NIOSH]
• Subjects:
  Biopharmaceutics Ear Hearing Loss Hearing Loss, Noise-Induced Noise Noise, Occupational Occupational Health Safety Sense Organs
• Keywords:
  Acoustic Detection Acoustics Acoustic Signals Audiological Testing Auditory System Clinical Symptoms Clinical Tests Ears Hearing Acuity Hearing Loss Hearing Tests Humans Impulse Noise Intervention Muscle Contraction Noise Control Noise Exposure Noise Measurement Pharmaceuticals Sound

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• ISSN:
  0001-4966
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  Alabama ; Michigan ; Ohio ; Oregon ; OSHA Region 10 ; OSHA Region 4 ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DFSE - Division of Field Studies and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  146
• Issue:
  5
• NIOSHTIC Number:
  nn:20058015
• Citation:
  J Acoust Soc Am 2019 Nov; 146(5):3993-4006
• Contact Point Address:
  Kristy K. Deiters, Stephenson and Stephenson Research and Consulting (SASRAC), Forest Grove, Oregon 97116, USA
• Email:
  kdeiters@sasrac.com
• Federal Fiscal Year:
  2020
• Peer Reviewed:
  True
• Source Full Name:
  Journal of the Acoustical Society of America
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d39b008d0f20a55161916c2ff378f68b93aeddf83f99e197742fa06045e12fc76a8889b89892f5cc842cc0c655eba45ea2368bdad4cfabe1796cae2281d79f57
• Download URL:
  https://stacks.cdc.gov/view/cdc/215208/cdc_215208_DS1.pdf
• File Type:
  [PDF - 1.45 MB ]