PSYCHOPHYSIOLOGICAL EFFECTS OF LED LIGHTING IN CONDITIONS OF THE HERMETIC OBJECTS

Objective: research of psychophysiological effects of LED lighting with different spectral and energy characteristics to justify the advisability of using LED light sources in hermetic objects. Materials and methods. An assessment was made of mental performance, psycho-emotional state, subjective indicators of the quality of sleep of the human operator and the functional activity of his visual analyzer under the conditions of LED lighting with constant and time-varying spectral and energy characteristics (simulating natural diurnal dynamics). Four hermetic chambers with duration of 11.5-12 days were carried out. Results ofthestudy. It is shown that the mental performance of operators in the approved LED lighting modes remained at a high level throughout the exposure period. The integral indicator of mood increased under the conditions of dynamic lighting by 78.9%, and in conditions of constant illumination by 14.1% compared to the background. The negative influence of experimental light regimes on subjective indicators of the quality of sleep and the state after awakening was not revealed. Dynamic LED lighting did not have a significant negative effect on the functional activity of the visual analyzer under the conditions of the hermetic volume. Conclusion. The results of the research indicate the possibility of using light-emitting diodes on board manned spacecraft and other hermetic objects without harm to mental performance, psychoemotional state and sleep quality of crew members (bibliography: 6 refs).

dynamic lighting, LED lighting, mental performance, operator, visual analyzer