Brinkmann R D, Scherg M
Scand Audiol. 1979;8(1):27-32. doi: 10.3109/01050397909076298.
Brainstem auditory evoked potentials (BAEP) elicited by bursts of white noise and 2 kHz sine waves were investigated in 3 subjects with normal hearing. The effects of Gaussian-shaped envelopes of varying half-width on the BAEP for stimulus on- and offset are demonstrated. The concept of "virtual trigger time, amplitude or energy" of the acoustic stimulus is proposed for an understanding of the effects of different envelope characteristics on the BAEP. Apart from potentials due to stimulus onset, we also found consistent potential changes after signal switch-off both for bursts of white noise and sinewaves. In the case of white noise these potentials appear to be related to a synchronized decrease in the firing rate of the cochlea and the auditory nerve. In the case of tone-bursts the potentials appear to be related to transient spectral components which elicit a new On-potential during acoustic stimulus offset.
对3名听力正常的受试者进行了研究，以检测由白噪声突发和2 kHz正弦波诱发的脑干听觉诱发电位（BAEP）。展示了不同半高宽的高斯形状包络对刺激开启和关闭时BAEP的影响。为理解不同包络特征对BAEP的影响，提出了声学刺激的“虚拟触发时间、幅度或能量”概念。除了由刺激开始引起的电位外，我们还发现，对于白噪声突发和正弦波，信号关闭后均出现一致的电位变化。对于白噪声，这些电位似乎与耳蜗和听神经放电率的同步下降有关。对于短音，这些电位似乎与瞬态频谱成分有关，这些成分在声学刺激偏移期间引发新的起始电位。
