Eisen A, Roberts K, Low M, Hoirch M, Lawrence P
Electroencephalogr Clin Neurophysiol. 1984 Sep;59(5):388-95. doi: 10.1016/0168-5597(84)90040-6.
Digital bandpass filtering (300-2500 Hz) designed for zero phase shift was applied to somato-sensory evoked potentials recorded with cephalic bipolar montages. Four consistent negative and corresponding positive peaks with latencies of about 16, 18, 19, and 20 msec were elicited with median nerve stimulation. Peroneal nerve stimulation also elicited 4 reproducible negative-positive peaks having latencies of about 24, 26, 28, and 30 msec. Interpeak latencies measured 1.3 +/- 0.2 msec and 1.8 +/- 0.25 msec for median and peroneal elicited SEPs respectively. Because cephalic bipolar recordings cancel most far-field potentials, multiple generators cannot account for all the additional components seen. It is hypothesized that some of the high frequency components recorded are due to activity in recurrent intrathalamic neuronal networks.
为实现零相移而设计的数字带通滤波（300 - 2500赫兹）应用于通过头部双极导联记录的体感诱发电位。正中神经刺激引出了四个持续出现的负峰和相应的正峰，潜伏期约为16、18、19和20毫秒。腓总神经刺激也引出了4个可重复的负 - 正峰，潜伏期约为24、26、28和30毫秒。正中神经和腓总神经引出的体感诱发电位的峰间潜伏期分别为1.3 ± 0.2毫秒和1.8 ± 0.25毫秒。由于头部双极记录消除了大部分远场电位，多个发生器无法解释所观察到的所有额外成分。据推测，记录到的一些高频成分是由于丘脑内神经元网络的反复活动所致。
