Foveal Brightness Discrimination with Multiple Increments as a Function of Time Between Successive Increments.
NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA CREW SYSTEMS DEPT
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In many naval weapons systems, information is provided in the mode of visual displays. In some displays a momentary increase in the intensity of a spot of light serves as a signal to an observer. The increased intensity of the spot may be repeated a number of times, and the observers job is to detect the signal in the background of visual noise. The visual variables of interest in such displays are the background luminance, the duration of the pip of increased intensity, the time between successive pips, the number of repetitions, and the total observation time. All of these variables have been investigated in the present study. Simple empirical laws have been derived to describe the influence of the variables and the interactions among the variables. Author Modified Abstract
- Anatomy and Physiology
- Human Factors Engineering and Man Machine Systems