Influence of Tinnitus on Auditory Spectral and Temporal Resolution and Speech Perception in Tinnitus Patients

被引:46
作者
Moon, Il Joon [1 ]
Won, Jong Ho [2 ]
Kang, Hyun Woo [3 ]
Kim, Dong Hyun [3 ]
An, Yong-Hwi [3 ]
Shim, Hyun Joon [3 ]
机构
[1] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Dept Otorhinolaryngol & Head & Neck Surg, Seoul 135710, South Korea
[2] Univ Tennessee, Hlth Sci Ctr, Dept Audiol & Speech Pathol, Knoxville, TN 37996 USA
[3] Eulji Univ, Eulji Med Ctr, Sch Med, Dept Otorhinolaryngol & Head & Neck Surg, Seoul 139711, South Korea
关键词
psychoacoustics; spectral resolution; speech perception; temporal resolution; tinnitus; COCHLEAR-IMPLANT LISTENERS; HIGH-FREQUENCY; HEARING-LOSS; HARMONIC COMPLEXES; NORMAL AUDIOGRAM; NOISE; INTELLIGIBILITY; DISCRIMINATION; THRESHOLDS; COMPRESSION;
D O I
10.1523/JNEUROSCI.5091-14.2015
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Although cochlear damage is believed to trigger the perception of tinnitus in the central auditory system, its pathophysiological mechanism is still unclear. We aimed to investigate the pathophysiology of tinnitus using psychoacoustic assessments of auditory spectral and temporal resolution and speech perception in noise. Human subjects with tinnitus and symmetric hearing thresholds were divided into three groups: nine unilateral tinnitus subjects with normal hearing thresholds (Group 1), 12 unilateral tinnitus subjects with hearing loss (HL; Group 2), and nine bilateral tinnitus subjects with HL. Fifteen normal-hearing subjects without tinnitus were also tested as a control group. Four different tests were administered: (1) the spectral-ripple discrimination (SRD) test, (2) the temporal modulation detection (TMD) test, (3) the Schroeder-phase discrimination (SPD) test, and (4) the speech recognition threshold (SRT) in noise test. There were no significant differences in SRD, TMD, and SPD between the tinnitus-affected ears (TEs) and non-tinnitus ears (NTEs) in Groups 1 and 2 (p > 0.05). In contrast, the TEs showed poorer SRTs than the NTEs in these two subject groups (p = 0.022 and 0.049). No inferiority of spectral/temporal resolution in TEs compared with NTEs suggests that theremaybe no more outer hair cell (OHC) damage on the tinnitus side given that damaged OHCs are associated with broadening the auditory filters. The decoupling of the SRT results from the spectral/temporal resolution data could imply that the occurrence of tinnitus does not depend upon the degree of damage to the OHCs, but rather upon different plastic changes in the central auditory system after cochlear damage.
引用
收藏
页码:14260 / 14269
页数:10
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