Smith J C, Marsh J T, Brown W S
Electroencephalogr Clin Neurophysiol. 1975 Nov;39(5):465-72. doi: 10.1016/0013-4694(75)90047-4.
Two experiments were performed to determine the brainstem origins of the scalp recorded auditory frequency-following response (FFR). The first was a study of FFR onset latency in which responses observed by direct recording from depth electrodes in brainstem auditory nuclei were compared with those obtained from the scalp. The mean onset latency of scalp recorded FFR (5.8 msec) closely approximated the 5.4 msec mean latency of response recorded from within the inferior colliculus (IC). In a second experiment, cooling of the IC greatly reduced or eliminated FFR both within this nucleus and at the scalp. FFR at the medial superior olive was unaffected during cooling. It was concluded that at moderate intensities of stimulation the primary source of scalp recorded FFR is the IC.
进行了两项实验以确定头皮记录的听觉频率跟随反应（FFR）的脑干起源。第一项是对FFR起始潜伏期的研究，其中将通过脑干听觉核深度电极直接记录观察到的反应与从头皮获得的反应进行比较。头皮记录的FFR的平均起始潜伏期（5.8毫秒）与在下丘（IC）内记录的反应的5.4毫秒平均潜伏期非常接近。在第二项实验中，冷却IC极大地降低或消除了该核内和头皮处的FFR。冷却期间内侧上橄榄核处的FFR未受影响。得出的结论是，在中等强度的刺激下，头皮记录的FFR的主要来源是IC。
