Based on the analysis of information sources, including legislation acts, of hygienic regulation of insolation in Ukraine and some countries of the European Community, the latest data on the bio-logical and physiological mechanisms effect of sunlight of different frequency ranges on the nervous system and the circadian rhythms of living organisms, is formulated the purpose of research on the development of a special questionnaire. The Answers to the questions of the questionnaire with a rep-resentative sample will allow obtaining objective data on the conditions of natural lighting and inso-lation in the living environment, and using mathematical methods to investigate their possible influ-ence on the state of reactive and personal anxiety of a person (according to the method of diagnosis by C.D. Spielberg, Yu.L. Hanina), self-assessment of their health and the incidence of acute respira-tory viral infections.

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