Tsuji S, Lüders H, Lesser R P, Dinner D S, Klem G
Electroencephalogr Clin Neurophysiol. 1984 Jun;59(3):214-28. doi: 10.1016/0168-5597(84)90061-3.
Cortical somatosensory evoked potentials to posterior tibial nerve stimulation were obtained in 29 normal controls varying in age and body height. In obtaining these potentials we varied recording derivations and frequency settings. Our recordings demonstrated the following points: N20 (dorsal cord potential) and the early cortical components (P2, N2) were the only potentials that were consistently recorded. All other subcortical components (N18, N24, P27, N30) were of relatively low amplitude and not infrequently absent even in normals. All absolute latencies other than N2 were correlated with body height. However, interpeak latency differences were independent of body height. Below the age of 20, subcortical but not cortical peak latencies correlated with age, but this appeared to be due to changes in body height in this age group. Absolute amplitudes and amplitude ratios (left/right and uni/bilateral) showed marked interindividual variability and have very limited value in defining abnormality. The use of restricted filter windows facilitated the selective recording of postsynaptic potentials (30-250 Hz) and action potentials (150-1500 Hz).
对29名年龄和身高各异的正常对照者进行了胫后神经刺激的皮质体感诱发电位检测。在获取这些电位时，我们改变了记录导联和频率设置。我们的记录显示了以下几点：N20（脊髓背侧电位）和早期皮质成分（P2、N2）是唯一能持续记录到的电位。所有其他皮质下成分（N18、N24、P27、N30）的振幅相对较低，即使在正常人中也常常缺失。除N2外，所有绝对潜伏期均与身高相关。然而，峰间潜伏期差异与身高无关。20岁以下，皮质下而非皮质峰潜伏期与年龄相关，但这似乎是由于该年龄组身高的变化所致。绝对振幅和振幅比（左/右和单/双侧）显示出明显的个体间差异，在定义异常方面价值非常有限。使用受限滤波窗口有助于选择性记录突触后电位（30 - 250 Hz）和动作电位（150 - 1500 Hz）。
