TY - JOUR
T1 - Ipsilateral suppression of transient evoked otoacoustic emission
T2 - Role of the medial olivocochlear system
AU - Tavartkiladze, George A.
AU - Frolenkov, Gregory I.
AU - Artamasov, Serge V.
PY - 1996
Y1 - 1996
N2 - Contralateral sound stimulation produces suppression of transient evoked otoacoustic emission (TEOAE), which is attributed to a reflex activation of the medial olivocochlear system. More pronounced suppression of TEOAE produced by ipsilateral masking could involve efferent-mediated effects along with effects of cochlear origin. However, this has not been investigated so far. Therefore, changes of click-evoked OAE under ipsi- and contralateral forward masking by clicks and noise-bursts were investigated in an extremely long-lasting experiment in one normal-hearing volunteer. The reduction of TEOAE under ipsilateral click-to-click forward masking was maximal during the first milliseconds after masker delivery implying the predominant role of the cochlear processes in TEOAE ipsilateral suppression. Ipsilateral forward masking by noise burst revealed additional TEOAE suppression with longer latency. Its time course was similar to that of the contralateral masking effect. The latter data suggest the involvement of the medial olivocochlear system in TEOAE ipsilateral suppression.
AB - Contralateral sound stimulation produces suppression of transient evoked otoacoustic emission (TEOAE), which is attributed to a reflex activation of the medial olivocochlear system. More pronounced suppression of TEOAE produced by ipsilateral masking could involve efferent-mediated effects along with effects of cochlear origin. However, this has not been investigated so far. Therefore, changes of click-evoked OAE under ipsi- and contralateral forward masking by clicks and noise-bursts were investigated in an extremely long-lasting experiment in one normal-hearing volunteer. The reduction of TEOAE under ipsilateral click-to-click forward masking was maximal during the first milliseconds after masker delivery implying the predominant role of the cochlear processes in TEOAE ipsilateral suppression. Ipsilateral forward masking by noise burst revealed additional TEOAE suppression with longer latency. Its time course was similar to that of the contralateral masking effect. The latter data suggest the involvement of the medial olivocochlear system in TEOAE ipsilateral suppression.
KW - Ipsilateral and contralateral forward masking
KW - Olivocochlear efferents
KW - Transient evoked otoacoustic emission
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U2 - 10.3109/00016489609137826
DO - 10.3109/00016489609137826
M3 - Article
C2 - 8725517
AN - SCOPUS:0029865805
SN - 0001-6489
VL - 116
SP - 213
EP - 218
JO - Acta Oto-Laryngologica
JF - Acta Oto-Laryngologica
IS - 2
ER -