Detection of light and flicker at low luminance levels in the human peripheral visual system. I. Psychophysical experiments.

The interaction between summation and adaptation mechanisms near the absolute threshold of vision is studied. In this paper, results are presented of measurements of both light detection and flicker detection for circular flashes with a diameter of 5.7-480 min of arc, a flash duration of 5-1000 msec, a period of 0-8000 msec, and at eccentricities of 7 and… CONTINUE READING