The effect of space—frequency characteristics of the organ of vision on the human psychophysiological state and working capacity

Abstract

During the long-term stay in closed environment of the orbital space station, it is extremely important that the light conditions and color scheme were favorable for the working capacity of a cosmonaut. The systems of lighting should ensure visual comfort for the crew members under stressful conditions and, in addition, they should appropriate to their health and recovery of functional reserves during the long-duration flight. To solve this task, the distribution of luminosity and chromaticity within a closed space should be taken into account. For better understanding the perception of visual information, we studied the color space-frequency characteristics of the organ of vision (SFC VO). A set of sensors was used to estimate psychophysiological parameters. After preadaptation of an operator, VO contrast sensitivity was measured by determining the thresholds of advent and disappearance of the test objects; this was accompanied by fixation of the time and adaptive brightness. Analysis of the experimental data made it clear that the color contrast sensitivity and directly related SFC of the organ of vision are valuable markers for interrelationships between processing of visual information and psychophysiological state of a human. Note that the color SFC VO not only illustrates deviations but also enables their quantification. Changes in psychophysiological state are accompanied by the appropriate changes in SFC VO, which should be taken into account in developing the neural information technologies used for health recovery and light-and-color control of environment.