Takahashi T, Tsukahara Y
Electroencephalogr Clin Neurophysiol. 1976 Aug;41(2):124-36. doi: 10.1016/0013-4694(76)90040-7.
Using the visual stimulator, the effect of color on the photoconvulsive response (PCR) was studied in 14 photosensitive patients. When stimuli of 15 c/sec flickers of white, red, yellow, green and blue light of 20 cd/m2 were given to the subjects, generalized PCRs were provoked only by the red-flicker. These PCRs were all inhibited by blue light of 1.9 cd/m2 when given either after the appearance of the PCRs or simultaneously with the red-flicker from the start. When blue light was given after the appearance of the PCRs the latency of appearance of the PCRs in response to the red-flicker showed an inverse relation to the disappearance latency of the PCR in response to the blue light. With blue light of 1 cd/m2, however, inhibition of the PCRs was seen in only 2 cases when it was given after the appearance of the PCR, and in only 1 case when the blue light was simultaneously given with the red-flicker from the start. These results clearly disclosed the following findings: (1) among various colored lights, an excitatory effect on generalized PCR was excitatory effect on generalized PCR was always seen only with red light at 15 c/sec and 20 cd/m2; (2) the PCRs provoked by the red-flicker were inhibited by blue light of 1.9 cd/m2, but not by blue light of 1 cd/m2.
使用视觉刺激器，对14名光敏患者研究了颜色对光惊厥反应（PCR）的影响。当向受试者给予20 cd/m²的白色、红色、黄色、绿色和蓝色光以15次/秒闪烁的刺激时，仅红色闪烁能引发全身性PCR。这些PCR在PCR出现后或从一开始与红色闪烁同时给予1.9 cd/m²的蓝光时均受到抑制。当在PCR出现后给予蓝光时，对红色闪烁反应的PCR出现潜伏期与对蓝光反应的PCR消失潜伏期呈反比关系。然而，对于1 cd/m²的蓝光，在PCR出现后给予时仅在2例中观察到对PCR的抑制，从一开始与红色闪烁同时给予蓝光时仅在1例中观察到抑制。这些结果清楚地揭示了以下发现：（1）在各种颜色的光中，对全身性PCR的兴奋作用总是仅在15次/秒和20 cd/m²的红光下可见；（2）由红色闪烁引发的PCR受到1.9 cd/m²蓝光的抑制，但不受1 cd/m²蓝光的抑制。
