소음성 난청자의 순음청력역치와 어음청취역치 및 청성뇌간반응 역치와의 비교

• Published in: Audiology and Speech Research, 5(1) Vol. 5; no. 1; pp. 42 - 50
• Main Author: 김규상
• Format: Journal Article
• Language: Korean
• Published: 한국청각언어재활학회 01.12.2009
• Subjects: 교육학; Noise-induced hearing loss (NIHL); Speech reception threshold; Pure-tone threshold; Auditory brainstem
• ISSN: 2635-5019; 2635-5027

Pure-tone thresholds (PTTs), speech reception threshold (SRT), and auditory brainstem response (ABR) threshold were compared in 100 ears with noise-induced hearing loss to examine the accuracy of prediction for hearing thresholds. The 100 subject ears, which were with sensorineural hearing loss and no history of ear disease, were selected from 62 male workers who were exposed to noise in automobile manufacturing factory and suspected of noise-induced hearing loss. PTTs were determined using modified ascending method in 5-dB steps by pure tone audiometry (PTA)；threshold for speech were measured as SRT；and ABR threshols was defined as the lowest stimulus intensity at which V wave could be clearly observed. SRT was lower than the average PTTs, and ABR threshold was higher than PTTs and SRT. Simple regression analysis was carried out to examine the relationship between SRT and the average PTTs and thresholds by frequency by PTA. PTTs in low frequency region (0.5-1 kHz) showed higher association, with explanatory power of more than 70%, and particularly the average PTTs by three division method showed the highest association with SRT. Simple regression analysis for the relationship between ABR threshold and the average PTTs and thresholds by frequency by PTA revealed that PTTs in 2-6 kHz region was more highly associated with ABR threshold. KCI Citation Count: 2