期刊
出版社
MDPI
DOI: 10.3390/ijerph15030524
关键词
acute effects; intermittent light; continuous light; dim light; alertness; sleep structure
资金
- National Key R&D Program of China [2016YFB0404202]
- National Natural Science Foundation of China [U1501244, 51561135014]
- Guangdong Innovative Research Team Program [2013C102]
- Science and Technology Project of Guangdong Province [2014B090914004]
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology [2017B030301007]
- Guangzhou Key Laboratory of Electronic Paper Displays Materials and Devices [201705030007]
- 111 Project
- Key Graduate Research Innovation Foundation Program of School of Psychology, SCNU [hsxly2016001]
Exposure to bright light is typically intermittent in our daily life. However, the acute effects of intermittent light on alertness and sleep have seldom been explored. To investigate this issue, we employed within-subject design and compared the effects of three light conditions: intermittent bright light (30-min pulse of blue-enriched bright light (similar to 1000 lux, similar to 6000 K) alternating with 30-min dim normal light (similar to 5 lux, similar to 3600 K) three times); continuous bright light; and continuous dim light on subjective and objective alertness and subsequent sleep structure. Each light exposure was conducted during the three hours before bedtime. Fifteen healthy volunteers (20 +/- 3.4 years; seven males) were scheduled to stay in the sleep laboratory for four separated nights (one for adaptation and the others for the light exposures) with a period of at least one week between nights. The results showed that when compared with dim light, both intermittent light and continuous bright light significantly increased subjective alertness and decreased sleep efficiency (SE) and total sleep time (TST). Intermittent light significantly increased objective alertness than dim light did during the second half of the light-exposure period. Our results suggested that intermittent light was as effective as continuous bright light in their acute effects in enhancing subjective and objective alertness and in negatively impacting subsequent sleep.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据