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在现代临床神经生理学中最有用的技术之一是诱发电位的记录。诱发电位是瞄对外界刺激反应的电过程,例如一个频闪光刺激产生的视觉诱发电位在枕部脑电图中有一个波,但大多数诱发电位用常规脑电图技术是看不到的,因为它们的波幅非常低,低到0.1到20/Jv,以至于它们与脑电图中的脑波背景活动及伪差相混淆。必须用计算机信号平均技术才能把诱发电位从背景活动中提出来。因为诱发电位总是在刺激后以同一间隔出现,而其他电活动是不能
One of the most useful techniques in modern clinical neurophysiology is the recording of evoked potentials. The evoked potential is an electrical process aimed at stimulating external stimuli. For example, the visual evoked potential generated by a stroboscopic stimulus has a wave in the occipital electroencephalogram, but most of the evoked potentials can not be seen by conventional electroencephalography. Because of their very low amplitude, as low as 0.1 to 20 / Jv, so that they are confused with brain wave background activity and artifacts in EEG. It is necessary to use computer averaging techniques to make evoked potentials from background activity. Because the evoked potentials always appear at the same intervals after stimulation, other electrical activities can not