Positive correlation between drowsiness and prefrontal activation during a simulated speed-control driving task
Positive correlation between drowsiness and prefrontal activation during a simulated speed-control driving task
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DOI：
10.1097/wnr.0000000000000265
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发表时间：
2014-11
期刊：
影响因子：
1.7
通讯作者：
Tao Liu
中科院分区：
文献类型：
--
作者：
Tao Liu
本研究旨在使用无线便携式近红外光谱设备来研究模拟驾驶任务中困倦和前额叶激活之间的关系。参与者沿着预设路线从起点开车到终点，有意控制车速的组（速度控制组）或不控制车速的组（无车速组）。困倦程度是用李克特式五项问卷来评估的。行为学数据显示，车速控制组的驾驶时间比无车速组长，但两组之间的错误次数没有差异。重要的是，速度控制组显示困倦得分和左前额叶激活之间存在显著的正相关，而无速度控制组则没有。研究结果表明，困倦的人可能会表现出前额叶激活的增加，作为在需要刻意控制行为的任务中维持预期表现水平的补偿性努力。此外，本研究表明，近红外光谱可以为我们提供一种检查日常工作中睡眠状态的可能性。
The present study aimed to examine the relationship between drowsiness and prefrontal activation during simulated driving tasks using a wireless portable near-infrared spectroscopy device. Participants drove from start to goal along default routes with either intentional control of their driving speed (speed-control group) or not (speed-free group). Drowsiness level was assessed using a five-item Likert-type questionnaire. The behavioral data indicated longer driving time in the speed-control group than in the speed-free group, whereas no difference in the number of errors was found between the two groups. Importantly, the speed-control group showed a significant positive correlation between the drowsiness score and left prefrontal activation, whereas the speed-free group did not. The results suggest that drowsy individuals may show increased prefrontal activation as compensatory efforts to maintain the desired level of performance in tasks that require deliberate control of behaviors. Furthermore, the present study shows that near-infrared spectroscopy may provide us with a possibility to examine the state of drowsiness during daily-life operations.