Bright light exposure does not prevent the deterioration of alertness induced by sustained high cognitive load demands
Bright light exposure does not prevent the deterioration of alertness induced by sustained high cognitive load demands
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DOI：
10.1016/j.jenvp.2017.03.008
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发表时间：
2017-08-01
影响因子：
6.9
通讯作者：
Leproult, Rachel
中科院分区：
文献类型：
--
作者：
Borragan, Guillermo;Deliens, Gaetane;Leproult, Rachel
本工作调查的影响，明亮的光线照射，以防止增加嗜睡和警觉性下降引起的双重工作记忆任务，其中高认知需求（HCL）是适应个人的最大能力。在一项随机交叉研究中，20名参与者暴露于两个阶段，其中包括20分钟的光照（昏暗或明亮的光线）。主观嗜睡（Karolinska嗜睡量表）和客观警觉性（心理警戒任务）进行了评估之前和之后的曝光和之前和之后执行高认知需求的任务。明亮的光线照射并不能防止任务引起的警觉性下降和嗜睡增加。这些结果表明，明亮的光管理之前，认知要求的任务是没有好处的，以防止损害随之而来的高认知需求。(C)2017爱思唯尔有限公司版权所有
The present work investigated the effects of bright light exposure to prevent increased sleepiness and decreased alertness induced by a dual working memory task in which high cognitive demands (HCL) are adapted to the individual's maximal capacity. In a randomized cross-over study, twenty participants were exposed to two sessions that included 20 min of light exposure (dim light or bright light). Subjective sleepiness (Karolinska Sleepiness Scale) and objective alertness (Psychomotor Vigilance Task) were assessed before and after light exposure and before and after performing with the high cognitive demands task. Bright light exposure did not prevent decreased alertness and increased sleepiness prompted by the task. These results suggest that bright light administered prior to a cognitively demanding task is not beneficial to prevent impairments ensuing from high cognitive demands. (C) 2017 Elsevier Ltd. All rights reserved.