Journal
BIOLOGICAL PSYCHOLOGY
Volume 101, Issue -, Pages 18-23Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.biopsycho.2014.07.001
Keywords
Real driving; Sleepiness; EEG; EOG; Lane departures; Night; Lane position; Speed
Funding
- Intelligent Vehicle Safety Systems (IVSS)
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Only limited information is available on how driving performance relates to physiological and subjective sleepiness on real roads. This relation was the focus of the present study. 33 volunteers drove for 90 min on a rural road during the afternoon and night in an instrumented car, while electroencephalography and electrooculography and lane departures were recorded continuously and subjective ratings of sleepiness were made every 5 min (Karolinska Sleepiness Scale - KSS). Data was analyzed using Bayesian multilevel modeling. Unintentional LDs increased during night driving, as did KSS and long blink durations(LBD). Lateral position moved to the left. LDs were predicted by self-reported sleepiness and LBDs across time and were significantly higher in individuals with high sleepiness. Removal of intentional LDs, enhanced the KSS/LD relation. It was concluded that LDs, KSS, and LBDs are strongly increased during night driving and that KSS predicts LDs. (C) 2014 Elsevier B.V. All rights reserved.
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