[Changes in mental workload and fatigue during performance of a mental task. 1. An experiment in 8-h self-paced transcribing task].
[Changes in mental workload and fatigue during performance of a mental task. 1. An experiment in 8-h self-paced transcribing task].
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[执行脑力任务期间脑力负荷和疲劳的变化。
DOI：
10.1539/joh1959.34.565
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
S. Kurimori
中科院分区：
文献类型：
--
作者：
T. Kakizaki;T. Oka;S. Kurimori
通过测定反映心理活动的主观和生理指标，研究了一天抄写任务中脑力负荷和疲劳的变化。三个测试日之间间隔一周，12名男学生休息并以中等和最大努力执行自节奏抄写任务，每人8小时。在最大努力下，被试比中等努力下抄写更多的字。在上午和下午，随着时间的推移，肾上腺素分泌增加，心率下降。在线性比例的总工作时间，枕中线β-2振幅，主观评级的疲劳和主观症状的疲劳上升，但临界闪烁值略有下降，在任务中的最大努力。从这些结果可以推断，随着工作时间的推移，智力活动和疲劳感增加，唤醒水平略有下降。因此，人们认为，随着工作时间的延长，脑力工作量会增加，主观疲劳感也会增加。
The changes in mental workload and fatigue during a one-day transcribing task were examined by determining some subjective and physiological measures which reflect mental activity. With an interval of one week between the three test days, 12 male students rested and performed self-paced transcribing task with moderate and maximum effort for 8 h each. The subjects transcribed more characters in the task with maximum effort than with moderate effort. In both the morning and afternoon, adrenaline excretion increased and heart rate decreased with the lapse of time. In linear proportion to the total working hours, occipital midline beta-2 amplitude, subjective rating of tiredness and subjective symptoms of fatigue rose, but critical flicker values fell slightly in the task with maximum effort. It was inferred from these results that with lapse of working hours intellectual activity and feeling of fatigue increase and the level of arousal slightly declines. Hence, it was considered that mental workload becomes heavier and subjective feeling of fatigue increases as the working hours become longer.