Coletta N J, Adams A J
Vision Res. 1986;26(8):1241-8. doi: 10.1016/0042-6989(86)90104-5.
Sensitivity to 25 Hz luminance flicker is enhanced as the intensity of a background is increased. This effect is due, in part, to light adaptation of cones. Preliminary studies suggested that, in the parafovea, the enhancement of flicker sensitivity is due to the adaptation of a color-opponent mechanism rather than a single cone mechanism or achromatic mechanism. In the present study, action spectra and field additivity experiments demonstrated that the enhancing effect was opponent in nature. The field sensitivity function had a notch at 570 nm; fields on either side of the notch acted subadditively. This suggests that, in the parafovea, the sensitivity of an achromatic flicker mechanism is influenced by the adaptation of a chromatic mechanism.
随着背景亮度的增加，对25Hz亮度闪烁的敏感度会增强。这种效应部分归因于视锥细胞的光适应。初步研究表明，在视网膜中央凹周围，闪烁敏感度的增强是由于颜色拮抗机制的适应，而不是单一视锥细胞机制或消色差机制。在本研究中，作用光谱和视野相加实验表明，增强效应本质上是拮抗的。视野敏感度函数在570nm处有一个凹陷；凹陷两侧的视野表现为次相加。这表明，在视网膜中央凹周围，消色差闪烁机制的敏感度受颜色机制适应的影响。
