olivocochlear bundle
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2019 ◽  
Vol 28 (2S) ◽  
pp. 508-515
Author(s):  
L. Yashaswini ◽  
Sandeep Maruthy

Purpose The study aimed to assess the relationship between the level-dependent function of efferent inhibition and speech perception in noise across different intensities of suppressor and across different signal-to-noise ratios (SNRs) of speech. Method Twenty-six young normal-hearing adults participated in the study. Contralateral suppression of transient evoked otoacoustic emissions (TEOAEs) was measured for 3 levels of suppressor (40, 50, and 60 dB SPL). Speech identification score (SIS) was measured at 5 ipsilateral SNR conditions (quiet, 0, −5, −10, and −15 dB), with and without contralateral broadband noise at 3 levels (40, 50, and 60 dB SPL). Furthermore, SNR-50 was measured with and without the same 3 levels of contralateral broadband noise. Results The results showed that the suppression magnitude of TEOAE increased with an increase in suppressor level. However, neither SIS nor SNR-50 was influenced by the contralateral noise. In addition, SIS and SNR-50 did not show significant correlation with contralateral suppression of TEOAEs. This was true at all the SNRs and contralateral noise levels used in the study. Conclusions The findings suggest that the intensity of noise directly influences medial olivocochlear bundle–mediated efferent inhibition. However, the role of the medial olivocochlear bundle in regulating speech perception in noise needs to be revisited. Supplemental Material https://doi.org/10.23641/asha.9336353



2015 ◽  
Vol 36 (2) ◽  
pp. 201-208 ◽  
Author(s):  
Maria Riga ◽  
Michael Katotomichelakis ◽  
Vasilios Danielides




2010 ◽  
Vol 49 (7) ◽  
pp. 488-496 ◽  
Author(s):  
Ajith U. Kumar ◽  
Medha Hegde ◽  
Mayaleela




2007 ◽  
Vol 46 (6) ◽  
pp. 277-286 ◽  
Author(s):  
Eleni Gkoritsa ◽  
Stavros Korres ◽  
Ioannis Segas ◽  
Ioannis Xenelis ◽  
Nikolaos Apostolopoulos ◽  
...  


2007 ◽  
Vol 71 (1) ◽  
pp. 63-69 ◽  
Author(s):  
M. Riga ◽  
I. Psarommatis ◽  
S. Korres ◽  
M. Varvutsi ◽  
I. Giotakis ◽  
...  


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