Mild Cognitive Impairment and driving: Does in-vehicle distraction affect driving performance?

Area of Science:

• Neuroscience
• Transportation Safety
• Gerontology

Background:

• In-vehicle distraction is a major cause of road accidents.
• Individuals with Mild Cognitive Impairment (MCI) possess reduced cognitive resources, potentially increasing their vulnerability to distraction.
• Limited research exists on the impact of distraction on the driving performance of MCI patients.

Purpose of the Study:

• To investigate the effect of in-vehicle distraction on the driving performance of MCI patients.
• To assess reaction times during unexpected incidents and accident probability in MCI patients under distraction.
• To compare the driving performance of MCI patients with cognitively intact individuals under various distraction scenarios.

Main Methods:

• A driving simulator study was conducted with 13 MCI patients and 12 cognitively intact controls.
• Participants engaged in three driving conditions: undistracted, conversing with a passenger, and conversing via a hand-held mobile phone.
• Reaction time to unexpected events and accident probability were measured.

Main Results:

• Distraction had a significantly greater impact on MCI patients compared to controls.
• Mobile phone use markedly increased reaction time and accident probability in MCI patients.
• While MCI patients reduced speed when using mobile phones, this compensatory strategy did not negate the negative effects on performance. Conversing with a passenger did not yield significant interaction effects.

Conclusions:

• Mobile phone use during driving poses a significant detrimental risk to the driving performance of individuals with Mild Cognitive Impairment.
• This is the first study to demonstrate the negative impact of mobile phone use on MCI driving performance.
• Findings underscore the need for interventions and awareness regarding driving safety for individuals with MCI.