The effects of age and physical exercise on multimodal signal responses: Implications for semi-autonomous vehicle takeover requests
The effects of age and physical exercise on multimodal signal responses: Implications for semi-autonomous vehicle takeover requests
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DOI：
10.1016/j.apergo.2021.103595
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发表时间：
2021-10-02
影响因子：
3.2
通讯作者：
Pitts, Brandon J.
中科院分区：
文献类型：
--
作者：
Huang, Gaojian;Pitts, Brandon J.
本研究探讨是否非实足年龄因素，从事体育锻炼，影响多模态（视觉，听觉和/或触觉的组合）信号的反应不同的年轻人和老年人在复杂的环境中。48名年轻人和老年人被分为运动组和非运动组，并在四种不同的任务条件下（基线，视频观看，车头时距估计和视频车头时距组合）乘坐模拟的3级自动驾驶汽车，同时被要求对各种多模式警告信号做出反应。总体而言，在驾驶条件下，两个年龄组的双模态和三模态警告的响应时间更快，但对老年人更为明显。与非运动组相比，参与体育锻炼仅与年轻参与者的最大制动力较小相关，并且还对应于较长的平均固定持续时间。这项研究的结果可以帮助指导半自动驾驶汽车的警告和信息系统的设计决策。
The present study examined whether the non-chronological age factor, engagement in physical exercise, affected responses to multimodal (combinations of visual, auditory, and/or tactile) signals differently between younger and older adults in complex environments. Forty-eight younger and older adults were divided into exercise and non-exercise groups, and rode in a simulated Level 3 autonomous vehicle under four different task conditions (baseline, video watching, headway estimation, and video-headway combination), while being asked to respond to various multimodal warning signals. Overall, bi- and trimodal warnings had faster response times for both age groups across driving conditions, but was more pronounced for older adults. Engagement in physical exercise was associated with smaller maximum braking force for younger participants only, and also corresponded to longer average fixation durations, compared to the non-exercise group. Findings from this research can help to guide decisions about the design of warning and information systems for semi-autonomous vehicles.