Cardiovascular and eye activity measures as indices for momentary changes in mental effort during simulated flight
Cardiovascular and eye activity measures as indices for momentary changes in mental effort during simulated flight
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DOI：
10.1080/00140130802120267
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发表时间：
2008-01-01
期刊：
影响因子：
2.4
通讯作者：
Mulder, L. J. M.
中科院分区：
文献类型：
--
作者：
De Rivecourt, M.;Kuperus, M. N.;Mulder, L. J. M.
这项研究探讨了脑力劳动的瞬时变化对心血管和眼睛活动测量的影响。共有19名男飞行员执行仪表飞行任务。通过让飞行员执行不同复杂程度的飞行演习来控制任务负荷。多层次分析表明，脑力劳动的瞬时变化对心血管和眼部活动指标都有明显影响。任务负荷的增加导致心率增加，心率变异性、平均停留时间和注视持续时间减少。休息期间和任务执行期间的心率有所不同。短数据段的心率变异性提供了对中等水平脑力活动的更深入了解。眼睛活动测量对中等水平的脑力劳动也很敏感。态度变化导致平均停留时间和平均注视持续时间增加。需要进行任务分析才能使用眼睛测量作为脑力劳动的有效指标。如今，了解操作员日常工作中心理需求变化的影响非常重要。本文提出了一种根据心率和眼部活动测量来估计此类影响的方法。特别是，平均短期心率变异性测量的使用是一个相对较新的方面。
This study examines effects of momentary changes in mental effort on cardiovascular and eye activity measures. A total of 19 male pilots performed an instrument flight task. Task load was manipulated by having the pilots perform flight manoeuvres of varying complexity. Multilevel analyses demonstrated clear effects of momentary changes in mental effort on both the cardiovascular and the eye activity measures. An increase in task load resulted in an increase of heart rate and a decrease in heart rate variability, mean dwell time and fixation duration. Heart rate differentiated between resting period and task execution. Heart rate variability from short data segments provided more insight in intermediate levels of mental effort. The eye activity measures were sensitive to intermediate levels of mental effort as well. Attitude changes resulted in an increase of mean dwell time and mean fixation duration. Task analysis is required to use eye measures as valid indices of mental effort. Having indications of the effects of changing mental demands during daily work of operators is of great importance nowadays. This paper presents an approach to estimate such effects on the basis of heart rate and eye activity measures. In particular, the use of averaged short-term heart rate variability measures is a relatively new aspect.