视觉系统独特的解剖生理特征使人们能够从视网膜和大脑皮层水平记录诱发电位。1865年Holmgren首先描述了直接从眼睛记录到诱发电位。后来又直接从动物的纹状皮层记录到对视觉刺激产生的诱发电位,但要从头皮记录到相同的电却极难成功,因为与背景脑电活动相比,诱发电位的振幅要小得多,难以辨认。 The unique anatomical and physiological characteristics of the visual system allow one to record the evoked potentials at the level of the retina and cortex. In 1865 Holmgren first described recording directly from the eye to the evoked potential. Later, the evoked potential generated by visual stimuli was recorded directly from the striatum of the animal, but recording the same electricity from the scalp was extremely difficult to succeed because the amplitude of the evoked potential was much smaller than that of background EEG activity Unrecognizable.