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Auditory threshold reduction on alcohol ingestion.

K Murata1, M Kawashima, R Inaba

  • 1Department of Audiology and Logopedics, Japan College of Rehabilitation and Welfare Professionals, Nagoya, Aichi. st@nihonchono.ac.jp

Psychopharmacology
|October 12, 2001
PubMed
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Alcohol consumption, even in small amounts, can temporarily reduce auditory threshold (AT) sensitivity in humans. The extent of this effect on hearing depends on the alcohol dose and time since consumption.

Area of Science:

  • Audiology
  • Neuroscience
  • Pharmacology

Background:

  • Auditory threshold (AT) measurement is standard for assessing auditory sensitivity and function.
  • Limited research exists on alcohol's effects on human audibility using AT measurements.

Purpose of the Study:

  • To investigate how alcohol ingestion methods influence auditory threshold (AT) across various frequencies over time.
  • To determine the impact of different alcohol doses and consumption times on auditory sensitivity.

Main Methods:

  • Fifteen healthy adults (7 men, 8 women) underwent AT measurements (250-8,000 Hz).
  • Participants consumed varying amounts of beer (5% alcohol) or alcohol-free beer.
  • Measurements were taken before and at multiple time points (5-480 min) post-ingestion.

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Main Results:

  • A significant reduction in auditory threshold (AT) was observed within 30 minutes after consuming 250 and 500 ml of beer.
  • This auditory effect correlated with peak blood alcohol concentration (BAC) and subsided by 480 minutes.
  • The degree of AT reduction varied with the alcohol dosage.

Conclusions:

  • Ingesting even small amounts of alcohol can decrease auditory threshold (AT).
  • The impact of alcohol on auditory function is dose-dependent and time-sensitive.