Functioning of olivocochlear bundle and speech perception in noise
Objectives To evaluate the effect of contralateral acoustic stimuli on speech identification
scores and to correlate this effect to contralateral suppression of evoked otoacoustic
emission. Design Ten normal-hearing children with good academic performance
participated in the study. Speech identification scores were measured in quiet and with
different ipsilateral signal to noise ratios in two conditions, with and without contralateral
acoustic stimuli. Transient evoked otoacoustic emissions were recorded for 70 dB SPL clicks …
scores and to correlate this effect to contralateral suppression of evoked otoacoustic
emission. Design Ten normal-hearing children with good academic performance
participated in the study. Speech identification scores were measured in quiet and with
different ipsilateral signal to noise ratios in two conditions, with and without contralateral
acoustic stimuli. Transient evoked otoacoustic emissions were recorded for 70 dB SPL clicks …
Objectives
To evaluate the effect of contralateral acoustic stimuli on speech identification scores and to correlate this effect to contralateral suppression of evoked otoacoustic emission.
Design
Ten normal-hearing children with good academic performance participated in the study. Speech identification scores were measured in quiet and with different ipsilateral signal to noise ratios in two conditions, with and without contralateral acoustic stimuli. Transient evoked otoacoustic emissions were recorded for 70 dB SPL clicks with and without contralateral acoustic stimuli.
Results
Findings revealed that contralateral acoustic stimuli enhanced speech perception when ipsilateral signal to noise ratios was+ 10 dB and+ 15 dB. This enhancement had significant positive correlation with contralateral suppression of OAE.
Conclusions
The results of the present study support the hypothesis that medial olivocochlear bundle might aid in speech perception in noise, thereby suggesting a possible role of cochlear efferent fibers in hearing. The psychoacoustic measures can be used to evaluate the efferent auditory pathways, where it is not possible to record otoacoustic emissions.
Lippincott Williams & Wilkins以上显示的是最相近的搜索结果。 查看全部搜索结果