Ipsilateral suppression effects on transient evoked otoacoustic emission

G. A. Tavartkiladze, G. I. Frolenkov, A. V. Kruglov, S. V. Artamasov

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


The spectral properties of click- and tone-evoked otoacoustic emission (OAE) under ipsilateral simultaneous tonal masking conditions as well as the changes of click-evoked OAE under ipsilateral forward masking by clicks were studied in normalhearing subjects. It was found that (i) transiently evoked OAE (TEOAE) spectra consist of a number of peaks individual to the subject and distributed along a sufficiently wide cochlear region; (ii) each spectral peak is excited only when the stimulus energy was concentrated within the frequency range covering the frequency of the particular peak; (iii) different TEOAE spectral peaks can be masked independently under simultaneous tonal masking conditions; (iv) the TEOAE tuning curve shape is more closely related to the spectrum of TEOAE but not to that of the stimulus; (v) forward masking of TEOAE generation is most pronounced during the first few milliseconds after masker click onset and become significantly smaller with the longer latency. It is suggested that; (i) TEOAE is generated by a number of local generators individually distributed along the cochlear partition within a sufficiently wide region and characterized by different power; (ii) possible efferent effects in the ipsilateral TEOAE suppression are negligible as compared to the TEOAE reduction of exclusively cochlear origin.

Original languageEnglish
Pages (from-to)193-204
Number of pages12
JournalBritish Journal of Audiology
Issue number5 --Apr
StatePublished - Jan 1994


  • outer hair cells
  • simultaneous and forward masking
  • transiently evoked otoacoustic emission
  • tuning curves

ASJC Scopus subject areas

  • Otorhinolaryngology


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