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인지부하가 시각주의와 운전수행도에 미치는 영향에 관한 연령대별 분석

Title
인지부하가 시각주의와 운전수행도에 미치는 영향에 관한 연령대별 분석
Translated Title
The Impact of Cognitive Workload on Driving Performance and Visual Attention in Younger and Older Drivers
Authors
손준우박명옥
DGIST Authors
손준우
Issue Date
2013-07
Citation
한국자동차공학회 논문집, 21(4), 62-69
Type
Article
Keywords
Cognitive workloadVisual attentionDriving performanceOlder driverDriver distractionDriving simulation인지 부하시선주의운전수행도고령운전자운전자 주의분산모의주행
ISSN
1225-6382
Abstract
Visual demands associated with in-vehicle display usage and text messaging distract a driver’s visual attention from the roadway. To minimize eyes-off-the-road demands, voice interaction systems are widely introduced. Under cognitively distracted condition, however, awareness of the operating environment will be degraded although the driver remains oriented to the roadway. It is also know that the risk of inattentive driving varies with age, thus systematic analysis of driving risks is required for the older drivers. This paper aims to understand the age-related driving performance degradation and visual attention changes under auditory cognitive demand which consists of three graded levels of cognitive complexity. In this study, two groups, aged 25-35 and 60-69, engaged in a delayed auditory recall task, so called N-back task, while driving a simulated highway. Comparisons of younger and older drivers’ driving performance including mean speed, speed variability and standard deviation of lane position, and gaze dispersion changes, which consist of x-axis and y-axis of visual attention, were conducted. As a result, it was observed that gaze dispersion decreased with each level of demand, demonstrating that these indices can correctly rank order cognitive workload. Moreover, gaze dispersion change patterns were quite consistent in younger and older age groups. Effects were also observed on driving performance measures, but they were subtle, nonlinear, and did not effectively differentiate the levels of cognitive workload.
URI
http://hdl.handle.net/20.500.11750/4928
DOI
10.7467/KSAE.2013.21.4.062
Publisher
한국자동차공학회
Related Researcher
Files:
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Collection:
Companion Diagnostics and Medical Technology Research Group1. Journal Articles


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