Effect of age on click-evoked otoacoustic emission: A systematic review

Neural Regeneration Research
Jinfeng Liu, Ningyu Wang

Abstract

The aims of this study were to investigate the changes of the total intensity of transient evoked otoacoustic emission (TEOAE) and signal-to-noise ratio in various frequency bands as a function of aging, and to explore the role of age-related decline of cochlear outer hair cells. The literature was searched using the PubMed database using 'transient-evoked otoacoustic emissions' as a keyword. Articles were limited as follows: Species was 'Humans'; languages were 'English and Chinese'; publication date between 1990-01-01 and 2010-12-31. The references of the found were also searched to obtain additional articles. (1) Articles should involve the total TEOAE level or signal-to-noise ratio. (2) The measurement and analysis system used was Otodynamics ILO analysis system (ILO88, ILO92, ILO96 or ILO292). (3) Studies involved groups of greater than 10 subjects and TEOAE results were from normally hearing ears. (4) If more papers from the same author or laboratory analyzed the same subjects, only one was used. The correlations of the age scale with the total level and signal-to-noise ratio of TEOAE was determined, respectively. (1) TEOAE total level gradually increased until 2 months of age, and then decreased with increasing age. Sign...Continue Reading

Software Mentioned

SPSS
GraphPad
Otodynamics
GraphPad Prism

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