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KMID : 0361020200630120570
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Korean Journal of Otolaryngology - Head and Neck Surgery
2020 Volume.63 No. 12 p.570 ~ p.579
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The Effect of Long-Term Unilateral Deafness on Auditory Performance
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Kwak Min-Young
Kim Dong-Hyun
Oh Hyeon-Sik
An Yong-Hwi
Won Jong-Ho
Shim Hyun-Joon
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Abstract
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Background and Objectives :We investigated whether there are differences in auditory performancebetween the healthy ears of subjects with unilateral deafness (UD) and the controlears of subjects with normal hearing (NH) in both ears.
Subjects and Method : Sixteen subjects with acquired UD and 16 subjects with NH thresholdsfor both ears were enrolled. We compared the auditory performance of UD group and controlgroup with NH in both ears.
Results : We found no meaningful differences in the three measures of psychoacoustic performancebetween the total healthy ears of subjects with UD and the ears of the control group.
However, in the subgroup comparison, the left ears of subjects with right UD showed significantlypoorer spectral-ripple discrimination (SRD) than the right ears of the subjects with leftUD (p=0.006) and the ears of control subjects with NH (p=0.004).
Conclusion : Our findings indicate that after unilateral auditory deprivation, auditory processingis differentially affected by the side involved. In the subjects with acquired UD, the longtermhearing deprivation on the right side induced the down-regulation of central auditory processfor SRD, but hearing deprivation on the left side did not affect SRD.
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KEYWORD
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Auditory cortex, Deafness, Hearing loss, unilateral, Plastics, Speech perception
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