Abstract

Measurements in terms of the total average number of quanta that must be intercepted from the background by a flash of various durations, shapes, and sizes in order to perceive a “negative” flash are presented for rod vision 7° nasal from the fovea.

It proved that the results are fairly well described by quantatheoretical observations on the dependence of the absolute threshold on the visual angle of the test spot and the flashtime and such observations on the behavior of the contrast threshold.

© 1952 Optical Society of America

Peripheral Contrast Thresholds for Various and Different Wavelengths for Adapting Field and Test Stimulus

M. A. Bouman
J. Opt. Soc. Am. 42(11) 820-829 (1952)

Mechanisms in Peripheral Dark Adaptation

M. A. Bouman
J. Opt. Soc. Am. 42(12) 941-950 (1952)

On the Integrate Capacity in Time and Space of the Human Peripheral Retina

M. A. Bouman and G. van den Brink
J. Opt. Soc. Am. 42(9) 617-620 (1952)

Visual Thresholds for Line-Shaped Targets

M. A. Bouman
J. Opt. Soc. Am. 43(3) 209-211 (1953)

Absolute Thresholds for Moving Point Sources

M. A. Bouman and G. van den Brink
J. Opt. Soc. Am. 43(10) 895-898 (1953)