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Related Experiment Video

Updated: Jun 16, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

Driver Performance in the Moments Surrounding a Microsleep.

Linda Ng Boyle¹, Jon Tippin, Amit Paul

¹Department of Mechanical and Industrial Engineering, University of Iowa.

Transportation Research. Part F, Traffic Psychology and Behaviour

|January 22, 2010

Summary

Individuals with obstructive sleep apnea syndrome (OSAS) experience significant driving impairment during microsleep episodes. Performance decrements during these sleep intrusions correlate with their duration, especially on curves.

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Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

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Published on: July 24, 2019

Area of Science:

Neurology
Sleep Medicine
Traffic Safety

Background:

Obstructive sleep apnea syndrome (OSAS) is a significant risk factor for drowsy driving.
Microsleep episodes, brief, involuntary sleep intrusions, pose a critical threat to driver safety.

Purpose of the Study:

To investigate driving performance impairments during microsleep episodes in individuals with OSAS.
To compare driving performance during microsleeps versus wakefulness in OSAS patients.

Main Methods:

Utilized a high-fidelity driving simulator for a one-hour drive.
Synchronous electroencephalographic (EEG) recordings identified microsleep episodes in 24 licensed drivers with OSAS.

Main Results:

Significant deterioration in vehicle control observed during microsleep episodes compared to wakefulness.
Performance decrements correlated with microsleep duration, particularly on curved road segments.

Conclusions:

Driving performance is demonstrably impaired during microsleep episodes in individuals with OSAS.
Real-time detection of microsleeps is crucial for developing effective drowsy driver detection and alerting systems using EEG technology.