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不同视刺激的人脑视诱发电位（ＶＥＰ）有着不同的波形特征和规律。光闪ＶＥＰ随刺激亮度增高，峰时缩短，波幅增大；频闪刺激时反应出现多峰，随频率增高波幅逐渐下降，同步的ＶＥＰ的空间频率极限接近刺激频率３０次／Ｓ。棋盘格ＶＥＰ随空间频率由低增高，波幅迅速增大。至某一空间频率时，再增高空间频率，波幅又迅速减小，对某一空间频率反应最大。对比度ＶＥＰ波幅开始随对比度增大而迅速增大，峰时开始则随对比度增大而迅速缩短。增至某一对比度时，波幅上升明显减慢，峰时缩短减少，对比度增至１００％时，波幅达到最大值，峰时变化甚小；红绿蓝三基色ＶＥＰ，波形上有明显差别，波形较上述几种波形复杂。红色刺激的ＶＥＰ峰时最短，蓝色刺激的ＶＥＰ峰时最长。两负波波幅比值随波长变化呈红－绿色或红－蓝色拮抗。
Different visual stimuli of human brain evoked potentials (VEP) have different waveform characteristics and laws. The light-flashed VEP increased with the stimulus brightness, shortened at the peak, and increased in amplitude. When the strobe stimulated, the response appeared multi-peaked and decreased gradually with increasing frequency. The spatial frequency of the synchronized VEP was close to the stimulus frequency of 30 times / s. The chessboard VEP increases rapidly with increasing spatial frequency and its amplitude increases rapidly. To a certain spatial frequency, and then increase the spatial frequency, the amplitude decreases rapidly, the maximum response to a spatial frequency. Contrast VEP amplitude began to increase rapidly with increasing contrast, peak began with the contrast rapidly increased and shortened. When the contrast is increased to 100%, the amplitude reaches the maximum value, and the change of the amplitude is very small. The VEP of the red, green and blue colors have obvious difference on the waveform, and the waveform More complex than the above several waveforms. The red stimulated VEP peak was the shortest and the blue stimulated VEP peaked the longest. The ratio of the two negative wave amplitudes showed red-green or red-blue antagonism with the change of wavelength.