Abstract

The luminance–time relation was recorded at various retinal locations along the horizontal meridian of the dark-adapted retina. The test spot subtended at the eye 7′. The critical duration is found to vary as a function of eccentricity. In addition, some data are produced that seem to show that the luminance–time relation, at absolute threshold, depends on the time distribution of luminance, in the light stimulus, in the range of duration for which partial summation occurs. However, strong individual differences of the sign of this effect are found.

© 1971 Optical Society of America

Absolute Threshold before and after Correction of Oblique-Ray Astigmatism

Lucia Ronchi
J. Opt. Soc. Am. 61(12) 1705-1709 (1971)

Photochromatic Intervals as a Function of Retinal Eccentricity for Stimuli of Different Size*†

Lothar Spillmann and Susan Seneff
J. Opt. Soc. Am. 61(2) 267-270 (1971)

Visual Latency as a Function of Stimulus Onset, Offset, and Background Luminance*

Ralph W. Hansteen
J. Opt. Soc. Am. 61(9) 1190-1195 (1971)

Spatial and Luminance Determinants of the Increment Threshold under Monoptic and Dichoptic Viewing*†

Joseph I. Markoff and Joseph F. Sturr
J. Opt. Soc. Am. 61(11) 1530-1537 (1971)

Effects of Surround Luminance on Perceptual Latency in the Fovea*

Halsey H. Matteson
J. Opt. Soc. Am. 61(9) 1169-1172 (1971)