骨導音刺激によるBrain Stem Response

概要

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Short latency responses evoked by bone conduction sounds were recorded from the scalp of humans. One cycle of sinusoidal wave (1KHz)was used as a stimulus for driving the bone conduction receiver. The wave form of the responses evoked by bone conduction sounds was similar to brain stem responses evoked by air conduction sounds.In 10 adults with normal hearing, the thresholds of the bone-conduction BSR were 5 to 15dB SL (sensation level). In 7 normal hearing children, the bone-conduction BSR thresholds ranged from 0 to 20dB nHL (the mean of the sensation level of 10 normal hearing adults).The bone-conduction BSR test was applied to 20 clinical patients with conductive, scnsorineural and mixed hearing losses. It was demonstrated that the bone-conduction BSR test was useful for differentiation of conductive, sensorineural and mixed hearing losses.
耳鼻咽喉科臨床学会の論文