Studies of Psychology and Behavior ›› 2013, Vol. 11 ›› Issue (6): 752-758.

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The Influence of Mental Fatigue on Cognitive Control and Motivation in the Research on Peripheral Physiological Mechanisms

Zhu Zhaohong, Ma Xiao, Zhang Junfeng   

  1. Department of psychology, Xi'an Physical Education University, Xi'an 710068
  • Received:2013-05-16 Online:2015-02-15 Published:2013-11-20

心理疲劳对认知控制和动机影响的外周生理机制

朱昭红, 马骁, 张俊峰   

  1. 西安体育学院心理学系,西安 710068
  • 作者简介:朱昭红,女,西安体育学院讲师。E-mail:zhuzhaohong3011@126.com。
  • 基金资助:
    本研究得到陕西自然科学基金项目(2011JQ4041)和国家自然科学基金项目(30970912)的资助。

Abstract: The effects of mental fatigue on cognition control and the accompanying changes in autonomic nervous were assessed. Subjects performed a Flanker task for 1 h without rest, and were motivated to continue task for 20 minutes. Subjective levels of fatigue, performance measures and HRV were recorded. From the results, we found that subjects fatigue ratings increased,suggesting that the 1 h of task performance resulted in an increase in mental fatigue. Misses increased with time on task. Time domain measures of HRV and LF increased, while HF and LF/HF recovered to baseline with time on task. Time domain measures of HRV and HF increased, while LF decreased to baseline after motivated. Thus, we speculate that subjects with more sympathetic-and less parasympathetic-related modulation will be less capable of inhibiting responses because of mental fatigue, After motivated, parasympathetic-related modulation is hypoactive and as a result performance increase.

Key words: mental fatigue, cognitive control, motivation, peripheral physiological, Heart Rate Variability (HRV)

摘要: 检测心理疲劳进程中的认知控制变化特点和动机的作用,以及所伴随的自主神经变化特点。心理疲劳由1小时持续完成的Flanker任务引发,之后采用社会性比较和物质奖励激励被试继续完成另20分钟该任务,期间记录了被试厌恶继续完成该任务的水平,行为指标和心率变异性。结果发现,随着时间增加厌恶继续完成任务评分增加;反应时变化不显著,错误率显著增高,给出激励后降低,而且错误率上兼容效应显著;心率变异性时域和频域差异显著。心理疲劳之后表现为交感神经激活增加而副交感神经激活减弱,被试错误率增加,行为绩效降低,源于疲劳造成了被试行为抑制能力下降,给出奖励之后副交感神经再次激活,抑制能力得到部分改善。

关键词: 心理疲劳, 认知控制, 动机, 外周生理, 心率变异性

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