[Role of space-frequency characteristics of vision organ in the human psychophysiological state and performance]

Light conditions and color scheme of closed environments should be favorable to human performance. Space station lighting system should ensure visual comfort during work and be appropriate for crew health and well-being. To be successful in solving these problems, it is important to have objective data about luminosity and chromaticity distribution in closed environments. Experiments aimed to investigate the vision color space-frequency characteristic (SFC) were performed using a set of psychophysiological sensors. Contrast sensitivity of pre-adapted operators was determined by thresholds of perceiving object's advent and disappearance, as well as by tracking time and adaptation and test luminosity. Analysis of the experimental data made it evident that color contrast sensitivity and, therefore, SFC of the organ of vision are valuable markers of the interdependence between the visual information processing and psychophysiological status of human. Color SFC illustrates deviations and also enables their quantification. Changes in psychophysiological parameters bring about commensurate deviations in color SFC; consequently, SFC can be implemented in neuroinformation technologies of health recovery and light-and-color control of environment.