Hou S M, Lipscomb D M
Arch Otorhinolaryngol. 1979;222(3):235-40. doi: 10.1007/BF00456321.
Comparisons were made of cochlear microphonics (CM) and scalp recorded frequency-following responses (FFR) from chinchilla and human. The latency of the scalp/ear-lobe recorded FFR was found to be nearly zero with respect to CM. Further, auditory nerve action potential were noted to diminish rapidly after death whereas the CM component in FFR reduced gradually. The decay of the CM component of FFR measured at the scalp after death followed an identical time course to that of the CM at round window. These observation lead to the conclusion that FFR does not originate in the brain stem but is essentially cochlear potentials picked up by electrodes located at the scalp.
对龙猫和人类的耳蜗微音电位（CM）以及头皮记录的频率跟随反应（FFR）进行了比较。发现相对于CM，头皮/耳垂记录的FFR潜伏期几乎为零。此外，还注意到听觉神经动作电位在死后迅速减弱，而FFR中的CM成分则逐渐降低。死后在头皮测量的FFR中CM成分的衰减与圆窗处CM的衰减具有相同的时间进程。这些观察结果得出结论，FFR并非起源于脑干，而是本质上由位于头皮的电极采集到的耳蜗电位。
