次任务下的驾驶员视觉搜索能力研究

Driver's Visual Search Ability in Sub-task

从视觉搜索的角度研究次任务对驾驶绩效的影响,通过反应时长评价驾驶接管绩效,使用视野测试和眼动数据研究驾驶员视觉搜索能力。自变量为驾驶员所执行的次任务类型和次任务沉浸时长。共采集32名被试在不同沉浸程度下的反应时长和眼动数据,结果表明,经过一段时间的反应后,被试所需要的反应时长缩短且正确率升高。被试所执行的次任务类型对其视觉搜索能力有显著性影响,相比于游戏次任务组,相声次任务组的被试反应更快且正确率更高。此外,5 min和10 min的沉浸时长对被试的视觉搜索能力不具有显著性影响。

This article investigates the impact of sub-tasks on driving performance by evaluating driver's visual search ability.The driving takeover performance is reflected by driver's reaction time,and driver's visual search ability is evaluated by visual field test and eye movement data.The independent variables are defined as the type of sub-task undertaken by the driver and the length of time of the sub-task.The reaction time and eye movement data were collected from a total of 32 participants under different levels of immersion.The results show that after certain reaction time,participants performed with shorter response time and higher accuracy than the sub-task just started.The types of the sub-task undertaken by the participants have significant impacts on their visual search ability.Compared to the group with the sub-task of game,the participants in the group of cross-talk sub-task reacted faster and performed with higher accuracy.In addition,the immersion time of 5 minutes or 10 minutes had no significant impact on participant's visual search ability.