![]() ![]() This study examined how brake operation and palmar perspiration indicate hazard predictive ability of older drivers in a driving simulation. Objective: Motor accidents caused by older drivers have been increasing and may result from a decline in cognitive functioning and delay in hazard perception. ![]() These findings highlight the need to examine the impact of decreased cognitive function on hazard perception. These individuals exhibited PSR and SPR responses that were not consistent with the hazard scenes, and they made errors in their operation of the driving simulator. Two participants were suspected of having decreased cognitive function according to the Mini-Mental State Examination. SPR response was faster than braking response, except in scenes where the participants had only a fleeting moment to react to the hazard, suggesting that SPR is a suitable evaluation index for hazard perception timing. SPR response was faster in hazard scenes that involved a surprise process. ![]() PSR tended to be greater in hazard scenes that involved anticipation or complexity processes, suggesting the involvement of factors such as the participants’ readiness to anticipate hazards and their emotional changes. These participants undertook the driving simulation test, and we measured their PSR, SPR, and device operation responses. We recruited 52 elderly people who were aged ≥60 years and were active drivers. We created a driving simulation test for assessing drivers’ hazard-perception skills by measuring their palmar sweating response (PSR), skin potential reflex (SPR), and ability to operate the steering wheel, accelerator, and brake. ![]()
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