Influence of Stimulus Luminance upon the Upper Speed Threshold for the Visual Discrimination of Movement
- 1 February 1958
- journal article
- research article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 48 (2) , 125-128
- https://doi.org/10.1364/josa.48.000125
Abstract
The observer viewed the center of a circular black area surrounded by a dimly illuminated area. A small moving spot of white light traversed the path of a horizontal line centered in the circle. At high speeds, the observer reported a stationary line and could not indicate the direction of movement. At slow speeds, he indicated the direction (right or left). Three subjects made observations for different combinations of luminance and speed of the moving spot.Keywords
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