[Basic research on measurement of mental work load utilizing physiological information].
[Basic research on measurement of mental work load utilizing physiological information].
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利用生理信息测量脑力工作负荷的基础研究
DOI：
10.1539/joh1959.32.105
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
A. Nagasaka
中科院分区：
文献类型：
--
作者：
K. Takano;K. Yoshino;A. Nagasaka
心理负荷的评价方法有多种，如任务时间分析法、基于单通道模型的次级任务法等。然而，利用生理信息的评估方法相对较新地被提出。因此，这种方法还没有得到充分的审查，关于它的关系，迄今提出的方法和它的实际效用，在评估心理工作负荷。本研究对任务时间分析法、次级任务法、利用生理信息的评价方法和主观评分法进行了比较，并重点介绍了在模拟实验中利用生理信息的评价方法。在通过实验结果评估回归时，所采用的标准是时间共享分数（TSF），其计算为基于单通道模型的与实际允许时间相比的相对所需时间。主要结果如下：（1）TSF评价值是一个有用的指标，它反映了每个被试的个体能力，与给定信息量成正比，最符合单通道模型的定义。(2)TSF值与现有的次级任务法和主观评分法所得值显著相关。因此，这一结果证明了上述说法的正确性。(3)在本实验所采用的生理指标中，SRRP（皮肤电阻反射脉率）与TSF值的相关性最强。此外，该SRRP相对不受个体差异的影响，并显着相关的主观评分和次要任务在恒定的条件下的大气温度和主题的唤醒水平和重复性任务。
Various definitions and models have been proposed to evaluate mental work load, for example, task time analysis method and secondary task method based on single channel model. However, an evaluating method utilizing physiological information has been comparatively newly proposed. Therefore, this method has not been adequately examined with respect to its relation to be heretofore proposed methods and to its practical usefulness in evaluating mental work load. In this study comparison was made of various evaluating methods, i.e. task time analysis method, secondary task method, method utilizing physiological information, and subjective score method with emphasis on the method utilizing physiological information when a modeled experiment was conducted. In evaluating the regression by the experimental results, the adopted standard was time shared fraction (TSF), which was computed as the relative required time compared to actual permitted time based on the single channel model. The main results can be summarized as follows: (1) The evaluated TSF value is a useful index if it can be computed, because it reflects the individual ability of each subject, is proportional to the amount of given information, and is most faithful to the definition of single channel model. (2) The TSF value is significantly correlated to the value obtained by existing secondary task method and subjective score method. Thus, this result justifies the above mention. (3) In the adopted physiological indicators of this experiment, SRRP (skin resistance reflex pulse rate) has the strongest correlation to TSF value. Furthermore, this SRRP is relatively not affected by individual difference and is significantly correlated to subjective score and secondary task in the constant condition of atmospheric temperature and subject's arousal level and in the repetitive task.