WANG Jingbo,JIN Lanlan,CHEN Jun, et al. Characteristic analysis of air- and bone-conducted tone-burst evoked auditory brainstem response in normal adults[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2016, 46(2): 106-111.
Abstract：Objective: To analyse the characteristics of air- and bone-conducted tone-burst evoked auditory brainstem response (ABR) recorded in adults with normal hearing, to compare tone-burst ABR thresholds with pure tone behavioral thresholds and to investigate the value of air- and bone-conducted tone-burst ABR thresholds. Methods: Thirty otologically normal persons (male/female=14/16) accepted pure tone audiometry, air- and bone-conducted click evoked ABR and tone-burst evoked ABR. Results: ①Thresholds of air-conducted tone-burst ABR for 0.5, 1, 2 and 4 kHz were 18.41±4.47, 13.18±3.63, 8.86±5.10, 8.64±5.16 dB higher than the pure tone behavioral thresholds respectively; thresholds of bone-conducted tone-burst ABR for 0.5, 1, 2 and 4 kHz were 14.31±3.98, 10.45±4.54, 6.82±4.24, 8.18±4.77 dB higher than the pure tone behavioral thresholds respectively. ②The differences between the air- and bone- conducted tone-burst ABR thresholds for 0.5, 1, 2 and 4 kHz were 5.55±3.42, 3.86±4.86, 1.36±5.60, 1.59±6.05 dB. The differences for 0.5, 1 kHz were statistically significant (P<0.01); the differences for 2, 4 kHz had no statistically significance (P>0.05). ③The wave V latencies of air- and bone-conducted tone-burst evoked ABR were significantly longer than those of click evoked ABR (P<0.01), but there was no significant difference for I～V interval (P>0.05). Conclusion: The thresholds of air- and bone-conducted tone-burst evoked ABR are useful in estimating the pure tone behavioral thresholds. The differences between the air- and bone-conducted tone-burst ABR thresholds may be helpful in differentiating the type of hearing loss.
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