National Institute of Advanced Industrial Science and Technology (AIST), Japan.
National Institute of Advanced Industrial Science and Technology (AIST), Japan.
Appl Ergon. 2020 Oct;88:103179. doi: 10.1016/j.apergo.2020.103179. Epub 2020 Jun 16.
A one-pedal system for operating an electric vehicle allows drivers to flexibly accelerate and decelerate (and even stop) by using just an accelerator pedal. Based on previous findings, one-pedal operation is considered to have the potential to increase positive emotions and decrease cognitive workload. To test this possibility, the present study compared the emotional state and cognitive workload between one-pedal and conventional two-pedal operation. Participants drove a vehicle on public roads, and driving enjoyment (i.e., pleasure and immersion) and the cognitive workload (i.e., ease and effortlessness) were assessed by means of questionnaires. In addition, physiological variations associated with driving pleasure and difficulty were assessed by electroencephalography (EEG). Both the questionnaire and EEG results revealed an increase in driving enjoyment in one-pedal operation. On the other hand, only the EEG results suggested a decrease in the cognitive workload in one-pedal operation; the questionnaire results did not show a significant difference between the pedal conditions. These findings support the notion that one-pedal operation has a positive influence on the driver's mental state, though its influence on the cognitive workload will require further investigation. We discuss future directions toward a better understanding of the effects of one-pedal operation on the driver's mental state.
一种用于操作电动汽车的单踏板系统允许驾驶员通过仅使用加速踏板灵活地加速、减速（甚至停止）。基于先前的发现，单踏板操作被认为有可能增加积极情绪并降低认知工作量。为了验证这种可能性，本研究比较了单踏板和传统双踏板操作之间的情绪状态和认知工作量。参与者在公共道路上驾驶车辆，并通过问卷评估驾驶乐趣（即愉悦感和沉浸感）和认知工作量（即轻松感和不费力感）。此外，通过脑电图（EEG）评估与驾驶乐趣和难度相关的生理变化。问卷和 EEG 结果均表明单踏板操作可提高驾驶乐趣。另一方面，只有 EEG 结果表明单踏板操作可降低认知工作量；问卷结果并未显示踏板条件之间存在显著差异。这些发现支持了单踏板操作对驾驶员精神状态有积极影响的观点，尽管其对认知工作量的影响还需要进一步研究。我们讨论了进一步理解单踏板操作对驾驶员精神状态影响的未来方向。
