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Physiological correlates of mental effort as manipulated through lane width during simulated driving

机译：通过模拟驾驶期间通过车道宽度操纵心理努力的生理相关性

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Previous studies suggest that physiological effects of mental effort as manipulated trough cognitive task difficulty differ from effects of mental effort as manipulated trough a visuomotor task such as lane keeping in simulated driving. Most notably, heart rate increases with mental effort in the former but not in the latter task. EEG seems to be indicative of mental effort in both cases. In previous research [1], Brouwer and colleagues examined effects of mental effort as manipulated in a cognitive (memory) task on a range of physiological signals. In the present research we examine the same types of physiological signals using the same kind of analysis in a visuomotor (simulated driving) task. In this case, mental effort was manipulated using wide and narrow lanes. Effects of task difficulty on both subjective mental effort and behavioral variables were comparable across tasks. Effect of task difficulty was replicated for respiration frequency and to some extent for EEG alpha activity. However, in contrast to the cognitive task [1], skin conductance and heart rate related variables were not significantly affected by task difficulty in the current visuomotor task. We argue that differences in visual attention and cerebral energy demand between the types of tasks may be at the basis of this.
机译：以前的研究表明，精神努力的生理效应作为操纵的低谷认知任务难度与心理努力的影响不同，因为操纵槽的visuomotor任务，如车道保持在模拟驾驶中。最值得注意的是，心率随着前者的心理努力而增加，但不在后一项任务中增加。脑电图似乎表明两种情况都表明了心理努力。在以前的研究[1]中，Brouwer及其同事在一系列生理信号上检查了在认知（记忆）任务中操纵的心理努力的影响。在本研究中，我们使用相同类型的求解（模拟驾驶）任务中的相同类型的分析来检查相同类型的生理信号。在这种情况下，使用宽和狭窄的车道操纵心理努力。任务难度对两个主观心理努力和行为变量的影响是跨任务的相当。任务难度的效果被复制用于呼吸频率以及EEGα活动的一定程度。然而，与认知任务相比，当前Visuomotor任务中的任务难度没有显着影响皮肤电导和心率相关变量。我们认为，在任务类型之间的视觉关注和脑能需求之间的差异可能是在此的基础上。

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