Impaired Driving Clinical Trial
Official title:
Objective Assessment of the Effects of Shift Work on Drowsiness and Driving Impairment in Hospital Staff
The purpose of this protocol is to assess the risk of drowsy driving amongst shift workers using objective measures of drowsiness and driving performance in an instrumented research vehicle.
Specific Aim 1. To test the hypothesis that on road (track) driving performance will
deteriorate (variation in lateral lane position and the rate of out of lane driving events)
and the frequency of episodes of severe sleepiness will increase ("microsleeps" on EEG and
Johns' Drowsiness Score >4) in shift workers following an extended work shift or night shift
compared to a rested state, following day shifts.
Specific Aim 2. To test the hypothesis that ocular measures of alertness (percent of time
with eyes closed, eye tracking and Johns' Drowsiness Score) are related to abnormal driving
performance (driving out of the lane) and "microsleeps" during on road (track) driving.
Specific Aim 2a. To test the hypothesis that autonomic measures, ECG, respiration (measured
with the Bioharness), skin conductance level and peripheral blood flow (measured with the Q
sensor), are related to abnormal driving performance (driving out of the lane) and
"microsleeps" during on road (track) driving
Specific Aim 3. To test the hypothesis that self-reported sleepiness is related to on road
(track) driving performance and episodes of severe sleepiness following extended working
shifts or night shifts.
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Observational Model: Cohort
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