Funasaka S, Ito S
Audiology. 1986;25(3):176-83. doi: 10.3109/00206098609078384.
This study was conducted to investigate the effects of stimulus duration on auditory brainstem response (ABR) waveform. Stimuli were 3-kHz tone bursts with 1 ms rise/fall times and durations of 5, 10, 20 and 30 ms. They were delivered at interstimuli intervals ranging from 80 to 140 ms. Latency and amplitude increases were observed in waves V and VI as the stimulus duration increased, whereas wave III showed no increase in latency, but decreased in amplitude. Animal experiments showed that the slowly rising curve of the response with increasing stimulus duration results in an increase in the peak latency and in the amplitude of the slow component of the ABR. Thus the change in ABR waveform observed when the duration of the stimulus was increased is not explained by a recovery process of the nervous system, but is possibly mediated by the slow component of the ABR.
本研究旨在探讨刺激持续时间对听性脑干反应（ABR）波形的影响。刺激为3kHz短纯音，上升/下降时间为1ms，持续时间分别为5、10、20和30ms。刺激间隔时间为80至140ms。随着刺激持续时间的增加，V波和VI波的潜伏期和波幅增大，而III波潜伏期无增加，但波幅减小。动物实验表明，随着刺激持续时间增加，反应的缓慢上升曲线导致ABR峰值潜伏期和慢成分波幅增加。因此，当刺激持续时间增加时观察到的ABR波形变化并非由神经系统的恢复过程所解释，而可能由ABR的慢成分介导。
