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用平面均匀闪光和棋盘格图形翻转刺激，研究了１７只正常猫的多导程视觉诱发电位（ＶＥＰｓ），主要结果为：１．图形刺激引起的Ｐ－ＶＥＰ波形为两个正相成份（Ｐ１和Ｐ２）夹着一个负相成份（Ｎ１）组成“Ｗ”型的波复合；而平面均匀闪光引起的Ｆ－ＶＥＰ则为两个负相成分（Ｎ１和Ｎ１）成分夹着一个正相成分（Ｐ１）构成“Ｍ”型的波复合．这两种ＶＥＰ均表现出明显的双眼总和现象，而且Ｐ－ＶＥＰ的总和率大于Ｆ－ＶＥＰ的。２．Ｐ－ＶＥＰ在头颅表面的分布是左右对称的，以在枕中线部位电极记录到的电位最大，距离中线越远，其电位越小。而Ｆ－ＶＥＰ则在中线的电位最小，而两侧电极记录到的电位反而更高，分布也是左右对称的。３．随刺激的空间频率增加，Ｐ－ＶＥＰ的峰潜伏期逐渐延长；振幅则以０．１ｃ／ｄｅｇ的刺激所引起的为最高，然后随刺激空间频率的升高而下降。４．以半视野图形进行刺激，各导程的Ｐ－ＶＥＰ仍为“Ｗ”型，但振幅则明显低于全视野刺激，并且当鼻侧视网膜受刺激时，其反应均大于颞侧受刺激。
The multilevel visual evoked potentials (VEPs) of 17 normal cats were studied with flat uniform flashes and checkerboard graphic flip stimulations. The main results were as follows: 1. The P-VEP waveform caused by the pattern stimulus consists of two “W” -shaped waves with two negative-phase components (N1 and N1) sandwiched between two positive-phase components (P1 and P2) Negative phase components (N1 and N1) sandwich a positive phase component (P1) to form a “M” type of wave recombination. Both VEPs showed significant binocular summation, and the sum of P-VEP was greater than that of F-VEP. 2. The distribution of P-VEP on the cranial surface is bilaterally symmetrical so that the potential recorded by the electrode in the midline part of the occiput is the largest, and the farther it is from the midline, the smaller its potential is. The F-VEP in the midline of the smallest potential, while the two sides of the electrode recorded a higher potential, the distribution is symmetrical. 3. As the spatial frequency of stimulation increased, the peak latency of P-VEP gradually extended; the amplitude was highest at 0.1c / deg stimulus, and then decreased with increasing spatial frequency of stimulation. 4. With semi-field pattern, P-VEP of each lead was still “W” type, but its amplitude was significantly lower than that of full-field stimulation. When the nasal retina was stimulated, its response was greater than that of temporal stimulation.