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Light exposure elicits numerous effects on human physiology and behaviour, such as better alertness and mood. Here we investigated the effects of natural eye light exposure before awakening on sleep quality and morning alertness and mood. 16 subjects from 4 dormitories in the same class of Tsinghua University were selected to conduct a 30-day field experiment in summer. Because of the different distance from the window and the wall shelter, the distribution of natural light in the 4 beds of dormitory in the morning is also different. The natural eye light exposure before waking up was obtained by a wireless probe, which could record illumination in real-time. The physiological and psychological indicators such as sleep quality at night, alertness and mood after waking up were obtained by questionnaires and sleep monitoring band. The results showed that the more the LEA before waking up, the better alertness and mood after waking up. But no significant correlation was found between sleep quality and LEA.

STUDY ON THE EFFECTS OF AROUSLA LIGHTING OF DORMITORY ON COLLEGE STUDENTS’ SLEEP QUALITY, ALERTNESS AND MOOD IN SUMMER