Your everyday drive to Publix or down I-95 might be saying more about your brain than you realize. A Florida Atlantic University team in Boca Raton has found that routine driving patterns can quietly flag early cognitive decline in older adults, long before problems show up in the exam room.
Using unobtrusive sensors tucked into participants’ vehicles, researchers tracked how people braked, accelerated and structured their trips. They saw clear differences in pedal control, trip fragmentation and speed management between cognitively unimpaired drivers and those with pre-mild cognitive impairment (pre-MCI) or mild cognitive impairment (MCI). Taken together, those behaviors could offer a low-burden way to spot subtle changes early instead of waiting for a crisis.
How the Study Worked
The peer-reviewed study analyzed 4,739 real-world trips from 36 drivers and paired in-car telematics and accelerometer data with detailed cognitive testing every three months, according to Sensors. Researchers pulled out trip-level features such as distance, duration, mean and maximum speed, engine RPM, throttle variability and counts of hard braking or sharp turns.
They then used penalized mixed-effects models to pinpoint combinations of driving behaviors that best separated unimpaired drivers from those with pre-MCI or MCI. To focus on normal, everyday driving instead of lab simulations or self-reported behavior, the analysis zeroed in on trips from the final three months of participants’ first year in the study.
What Researchers Found
Florida Atlantic University noted that it was the overall pattern, not a single bad turn or hard brake, that sent the strongest signal. “What makes these findings especially compelling is how clearly the combined driving patterns separated the two groups,” Ruth Tappen, Ed.D., the study’s senior author, said in a Florida Atlantic University statement…