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Received June 18, 2015 Revised August 18, 2015 Accepted August 29, 2015 Address for correspondence Yong-Hwi An, MD Department of Otorhinolaryngology, Eulji Medical Center, Eulji University School of Medicine, 68 Hangeulbiseok-ro, Nowon-gu, Seoul 01830, Korea Tel +82-2-970-8276 Fax +82-2-970-8275 E-mail an0072@hanmail.net Background and ObjectivesZZAuditory temporal resolution, which refers to the time-related aspects of acoustic processing, can be evaluated by the Gaps-In-Noise (GIN) test. We investigated whether the presence of high frequency sensorineural hearing loss (HF-SNHL) affects the temporal resolution of GIN performance in older adults with normal hearing. Subjects and MethodZZHearing tests including the GIN test were performed in 87 subjects with normal pure tone average. The GIN threshold and percentage of correct answers were compared among 4 groups of participants; older adults with normal hearing (n=18), older adults with HF-SNHL (n=24), young adults with normal hearing (n=24) and young adults with HF-SNHL (n=21). ResultsZZThere was no significant difference in the mean GIN thresholds between the HFSNHL group (5.8±0.8 msec) and the normal hearing group (6.0±0.8 msec) in older adults, whereas the mean GIN thresholds of HF-SNHL group was higher than that of the normal group in young adults (4.6±0.3 msec vs. 4.2±0.5 msec, p<0.05). The mean percentage of correct answers of HF-SNHL group (62.5±5.5%) was not significantly different from that of the normal hearing group (60.6±3.9%) in the old, unlike in the young (71.3±4.0% with HF-SNHL vs. 76.9±4.3% with normal hearing, p<0.05). Age only showed a significant correlation with the GIN performance. Neither the GIN threshold nor the GIN perception level had any relation with the presence of HF-SNHL in older adults. ConclusionZZWe found no evidence that supported the influence of HF-SNHL on auditory temporal resolution in older adults. These results imply that HF-SNHL may be of little importance in gap detection after age-related changes in central auditory system. Korean J Otorhinolaryngol-Head Neck Surg 2015;58(12):841-7

korean journal of otorhinolaryngology-head and neck surgery

The Effect of High Frequency Sensorineural Hearing Loss on Auditory Temporal Resolution: Gaps-In-Noise Test Performance in Older and Young Adults with Normal Hearing