Daurat A, Foret J, Touitou Y, Benoit O
Laboratoire d'étude du sommeil, Inserm U296, Service d'explorations fonctionnelles, hôpital Henri-Mondor, Créteil, France.
Neurophysiol Clin. 1996;26(1):8-14. doi: 10.1016/0987-7053(96)81529-2.
The aim of this study was to assess the effects of exposure for one night to moderate bright light (BL) on subjective and objective measures of alertness, performance, and mood. Eight subjects were exposed to either BL or dim light (DL) during one night. During the previous day, they were exposed to bright light in both experimental conditions. Nocturnal BL suppressed melatonin secretion and increased body temperature. The ability to stay awake during the night, as measured by the power density in the alpha band, was significantly improved by BL exposure. BL also improved subjective alertness and performance during the first part of the night. However, improvements in the last two variables were followed by marked disruption in early morning patterns, with deterioration of mood and motivation.
本研究的目的是评估一晚暴露于中度强光（BL）对警觉性、表现和情绪的主观及客观指标的影响。八名受试者在一个晚上分别暴露于强光或暗光（DL）下。在前一天，他们在两种实验条件下均暴露于强光。夜间强光抑制褪黑素分泌并升高体温。通过α波段的功率密度测量，夜间保持清醒的能力在暴露于强光后显著提高。强光还改善了夜间前半段的主观警觉性和表现。然而，在这两个变量得到改善之后，清晨的模式出现了明显紊乱，情绪和动力恶化。
