Accession Number:

ADA409819

Title:

Cochlear Maturation and Otoacoustic Emissions in Preterm Infants: A Time-Frequency Approach

Descriptive Note:

Corporate Author:

POLITECNICO DI MILANO (ITALY) BIOMEDICAL ENGINEERING

Report Date:

2001-10-25

Pagination or Media Count:

4.0

Abstract:

Click-evoked otoacoustic emissions CEOAEs from preterm infants were analyzed to characterize developmental changes of cochlear active mechanisms. Due to their strong time-varying properties, CEOAEs were studied with the wavelet transform. Results obtanied in our study give a clear indication that time-frequencies characteristics of CEOAEs are not fully developed in preterm babies aud reach the complete maturation at about 38 wks post-conception. Also, in agreement with previous physiological and behavioral findings, our results show that the maturation of cochlear active mechanisms is not the same along the cochlear partition but exhibit a spatial gradient proceeding from base to apex.

Subject Categories:

  • Anatomy and Physiology
  • Medicine and Medical Research
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE