利用近红外探究疲劳对持久性注意影响

发布时间：2018-03-20 01:26

本文选题：持久性　切入点：疲劳状态　出处：《空军医学杂志》2016年06期 　论文类型：期刊论文

【摘要】：目的利用近红外探究疲劳对持久性注意影响。方法招募20名受试者,CPT任务刺激包括红绿蓝3种颜色的0~9阿拉伯数字,目标刺激为红色的3、绿色的5和蓝色的9,分别对应于键盘上的3,空格和9的按键。疲劳诱发任务为传统的字符2-back任务。试验分为3个阶段,第一阶段为清醒状态下CPT任务,时间为12 min,任务结束后被试者填写卡罗林斯卡嗜睡量表(karolinska sleepiness scale,KSS),第二阶段为疲劳诱发阶段,为60 min的字符2-back任务,任务结束后填写KSS量表。第三阶段为疲劳状态下的CPT任务,时间12 min,任务结束后填写KSS量表。采用带通滤波(0.05~0Hz)去除生理干扰成分,采用CBSI算法去除运动轨迹得到纯净的功能响应信号。结果 3次评价差异有统计学意义,经过成对Post-hoc检验,两两之间差异也有统计学意义,即警觉度水平随疲劳强度下降。同时发现了第3次警觉度较之第2次有所提高,即任务种类交替缓解了受试者疲劳感。从绩效水平看,疲劳前后对比,CPT任务的正确率显著性下降。从近红外血氧响应来看,相比于清醒状态下的CPT任务,疲劳状态下注意任务的血氧水平偏侧性显著性提高。结论研究结果对预测因疲劳引起的持续性注意能力下降有一定意义。
[Abstract]:Objective to investigate the effects of fatigue on persistent attention by using near infrared spectroscopy. Methods 20 subjects were recruited to stimulate 9 Arabic digits in three colors, including red, green and blue. The target stimulus was 3 in red, 5 in green and 9 in blue, corresponding to the 3, space and 9 keys on the keyboard, respectively. The fatigue induced task was a traditional character 2-back task. The experiment was divided into three stages, the first stage was the CPT task in awake state. At the end of the task, the participants completed Karolinska sleepiness scale, the second stage was fatigue inducing stage, the second stage was the character 2-back task of 60 min, and the third stage was the CPT task in fatigue state, after the completion of the task, the participants completed the Karolinska sleepiness scaleback scale, the second stage was the fatigue induced stage, the second stage was the character 2-back task of 60 min, and the third stage was the CPT task in the fatigue state. After the task was finished, the KSS scale was filled out. The physiological interference components were removed by bandpass filter (0.05Hz), and the pure functional response signals were obtained by CBSI algorithm. The results showed that there were significant differences among the three evaluations. After paired Post-hoc test, the difference was statistically significant, that is, the level of alertness decreased with fatigue strength. At the same time, it was found that the third alertness was higher than that of the second. From the performance level, the correct rate of comparison of CPT tasks before and after fatigue significantly decreased. From the near infrared blood oxygen response, compared with the waking state of CPT tasks, Conclusion\\\
【作者单位】：中国航天员科研训练中心基因工程国家重点实验室;
【基金】：国家自然科学基金课题(81671861) 中国航天医学工程预先研究项目(YJGF151204) 国家重点实验室自主课题(SYFD150051805)
【分类号】：R85

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