Effect of Cognitive Impairment on Driving-Relevant Cognition in Older Persons

• 作者: Michael Jager Nora Bethencourt Rahel Bieri Rene Martin Mari Tobias Nef Urs Peter Mosimann
• 来源期刊: 交通与运输工程：英文版
• 学科: 交通运输
• 关键词: COGNITIVE impairment aging driving cognition COGNITIVE assessment age differences.
• 年，卷（期）: 2014,（1）
• 页码范围: 11-18
• 页数: 8页
• 分类号: U

摘要

Intact cognitive abilities are fundamental for driving. Driving-relevant cognition may be affected in older drivers due to aging or cognitive impairment. The aim of this study was to investigate the effects of cognitive impairment on driving-relevant cognition in older persons. Performance in selective and divided attention, eye-hand-coordination, executive functions and the ability to regulate distance and speed of 18 older persons with CI-Group （cognitive impairment group） was compared to performance of older control group （18 age and gender-matched cognitively normal subjects） and young control group （18 gender-matched young subjects）. The CI-Group showed poorer performance than the other two control groups in all cognitive tasks （significance level （p） 〈 0.001, effect size （partial r/e） = 0.63）. Differences between cognitively impaired and cognitively normal subjects were still significant after controlling for age （effect sizes from 0.14 to 0.28）. Dual tasking affected performance of cognitively impaired subjects more than performance of the other two groups （p = 0.016, partial η2 = 0.14）. Results show that cognitive impairment has age-independent detrimental effects on selective and divided attention, eye-hand-coordination, executive functions and the ability to regulate distance and speed. Largest effect sizes are found for reaction times in attention tasks.