Gorga M P, Kaminski J R, Beauchaine K L, Bergman B M
Boys Town National Research Hospital, Omaha, Nebraska.
Ear Hear. 1993 Apr;14(2):85-94. doi: 10.1097/00003446-199304000-00003.
Auditory brain stem responses (ABRs) were measured for stimuli presented both by air conduction and by bone conduction. Stimuli included clicks and tone bursts at octave frequencies from 250 to 4000 Hz. ABR thresholds were comparable for air- and bone-conducted stimuli. Wave V latencies were longer for bone-conducted stimuli compared to similar responses for air conduction. This effect was evident for both clicks and tone bursts. The fact that these latency differences were largely independent of stimulus spectrum suggests that they are not due to differences between the frequency responses of air and bone conduction transducers. This finding is expected when one considers the interaction between output, threshold, and frequency for both transducer types. These data also suggest that there are inherent differences in transmission by air and bone conduction that affect response latency but are unrelated to the amplitude spectrum in the signal.
通过气导和骨导方式呈现刺激来测量听觉脑干反应（ABR）。刺激包括从250至4000赫兹的倍频程频率的短声和短纯音。气导和骨导刺激的ABR阈值相当。与气导的类似反应相比，骨导刺激的V波潜伏期更长。这种效应在短声和短纯音中均很明显。这些潜伏期差异在很大程度上与刺激频谱无关，这一事实表明它们并非由于气导和骨导换能器频率响应之间的差异所致。当考虑两种换能器类型的输出、阈值和频率之间的相互作用时，这一发现是可预期的。这些数据还表明，气导和骨导的传输存在内在差异，这些差异会影响反应潜伏期，但与信号中的振幅频谱无关。
