Suppressibility of the 2f1-f2 stimulated acoustic emissions in gerbil and man.

Abstract:

:The suppression tuning properties of the oto-acoustic distortion product emission, 2f1-f2 have been measured in the ear canal of gerbil and man. The results show the acoustic response to be suppressible in a similar, frequency-dependent manner in both species. Frequencies near to those of the stimulating tones are most effective in suppressing the response. Derived iso-suppression tuning curves have Q10dB values of between 1 and 6. Suppressor tones having frequencies near to f2 (the higher frequency stimulus) make a contribution to the tuning curve which is largely independent of the stimulus intensity and the frequency ratio between the two primary tones. Suppressors having f1-associated frequencies produce a variable amount of suppression depending on the stimulus parameters chosen. No specific suppression feature could be associated with suppressors near to 2f1-f2. The frequency selectivity of the acoustic DP generation mechanism shown by this study indicates a close association with the transduction mechanism. The demonstration of comparable signals in gerbil and man facilitates the direct transfer of laboratory results to the study of human ears.

journal_name

Hear Res

journal_title

Hearing research

authors

Brown AM,Kemp DT

doi

10.1016/0378-5955(84)90092-3

subject

Has Abstract

pub_date

1984-01-01 00:00:00

pages

29-37

issue

1

eissn

0378-5955

issn

1878-5891

pii

0378-5955(84)90092-3

journal_volume

13

pub_type

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