Document Detail

Fluctuations in susceptibility to noise-induced temporary threshold shift as influenced by the menstrual cycle.
MedLine Citation:
PMID:  7187667     Owner:  NLM     Status:  MEDLINE    
The relationship between the menstrual cycle and changes in HTL and in TTS (from exposure to "magenta" noise at 115 dBA for 10 min) was studied bidaily over 40 days in 9 normal-hearing (HTLs less than or equal to 15 db at .5-8 kc/s) aged from 20-30 years. All HTLs pre- and post-exposure were estimated from interrupted-tone, fixed-frequency Bekesy tracings. The analysis used was a technique developed to study such biological rhythms, a least-squares regression to a cosine function. An F ratio from the bivariate normal distribution was used to evaluate whether significant fluctuations across sessions occurred either in pre-exposure HTLs (2-8 kc/s) or in TTS (2,3,4, and 6 kc/s). No effects were frequency-dependent. For the pre-exposure HTLs 24 of 63 total measures showed a significant (p less than .05) fluctuation, ranging from 1.6 to 6.8 db. For the TTS data, 14 of 36 measures showed a significant fluctuation, ranging from 2.4 to 9.1 db. In general, pre-exposure HTLs were highest (poorer hearing) and TTS was least during menses.
M J Davis; W A Ahroon
Related Documents :
17573367 - The effect of fellows' training in invasive cardiology on radiological exposure of pati...
7342777 - Sulfur dioxide induced airway hyperreactivity in allergic sheep.
594497 - Fatigue of airway obstruction during long-term exposure to allergen aerosol.
22300357 - Validation of a new mixing chamber system for breath-by-breath indirect calorimetry.
24579387 - Patients' knowledge and exercise of their rights at the university college hospital, ib...
19084807 - Ventricular ectopy during treadmill exercise stress testing in the evaluation of long q...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of auditory research     Volume:  22     ISSN:  0021-9177     ISO Abbreviation:  J Aud Res     Publication Date:  1982 Jul 
Date Detail:
Created Date:  1984-02-23     Completed Date:  1984-02-23     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0014024     Medline TA:  J Aud Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  173-87     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Audiometry, Pure-Tone
Auditory Threshold / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Audiologic findings in presbycusis.
Next Document:  The effects of high-pass and of low-pass filtering upon the intelligibility of speech in white noise...