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Evaluation of Masking Effects on Speech Perception in Patients With Unilateral Chronic Tinnitus Using the Hearing in Noise Test.
MedLine Citation:
PMID:  22996163     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To verify that tinnitus itself could disturb speech perception and to evaluate the effects of masking noise on speech perception ability in the patients with normal hearing but unilateral chronic tinnitus using the hearing in noise test. STUDY DESIGN: Prospective, nonrandomized study. MATERIALS AND METHODS: Between June 2009 and May 2011, we enrolled 20 patients with normal hearing and subjective unilateral tinnitus that had persisted for more than 12 months, along with 20 healthy controls of the same age. All subjects were evaluated using audiologic examinations, the tinnitus handicap inventory, and the Korean version of the Hearing in Noise Test (K-HINT) to assess characteristics of tinnitus and speech perception ability in various noisy situations. RESULTS: Reception threshold for speech (RTS) in a quiet environment and signal-to-noise ratio (SNR) in various conditions of noise were significantly higher in the tinnitus than in the control group, regardless of whether noise came from the front, right, or left (p < 0.05). When the tinnitus group was subdivided according to the site of noise exposure, the mean SNR of the contralateral noise group was -7.9 ± 1.4 dB, which was significantly higher than the ipsilateral noise (-9.1 ± 1.8 dB) or control group (right, -10.0 ± 0.6 dB; left, -10.1 ± 0.5 dB) (p < 0.05). In addition, there was no significant difference between ipsilateral noise and control groups. CONCLUSION: From this study, we showed that tinnitus itself could adversely affect speech perception ability by increasing both RTS and SNR in the tinnitus patients in comparison with healthy controls. In addition, we suggest that proper level of noise on the site of tinnitus might be helpful to increase speech perception in the patients who experience chronic subjective tinnitus.
In Sun Ryu; Joong Ho Ahn; Hyun Woo Lim; Ka Young Joo; Jong Woo Chung
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-19
Journal Detail:
Title:  Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology     Volume:  -     ISSN:  1537-4505     ISO Abbreviation:  Otol. Neurotol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100961504     Medline TA:  Otol Neurotol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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