Yamazaki H, Armington J C
Chiba University School of Medicine, Japan.
Int J Neurosci. 1987 Aug;35(3-4):163-73. doi: 10.3109/00207458708987124.
(1) The human electroretinogram was recorded using two procedures that were designed to change the ratio of photopic to scotopic activity. (2) With the first procedure, responses were recorded with patterns that alternated with an asymmetrical time period to produce two average responses, one of which was more adapted than the other. (3) The second employed symmetrical alternation, but red and blue stimulation were used. (4) The electroretinogram was larger in responses to patterns of low spatial frequency for all conditions. The evoked potential, which was recorded simultaneously, was larger at intermediate frequencies. (5) The electroretinogram must be mediated before the antagonistic receptive field organization. (6) Sensitivity of electroretinogram with blue stimuli was higher than those with red at low spatial frequency. The possible scotopic contribution was discussed.
(1) 使用两种旨在改变明视觉与暗视觉活动比例的程序记录人类视网膜电图。(2) 在第一种程序中，用具有不对称时间段交替的图案记录反应，以产生两个平均反应，其中一个比另一个适应性更强。(3) 第二种程序采用对称交替，但使用红色和蓝色刺激。(4) 在所有条件下，视网膜电图对低空间频率图案的反应更大。同时记录的诱发电位在中频时更大。(5) 视网膜电图必定是在对抗性感受野组织之前介导的。(6) 在低空间频率下，视网膜电图对蓝色刺激的敏感性高于对红色刺激的敏感性。讨论了可能的暗视觉贡献。
