Related Experiment Video
Updated: Apr 28, 2026
Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
Published on: October 5, 2020
A strategically timed verbal task improves performance and neurophysiological alertness during fatiguing drives
Objective:
The objective of this study was to investigate if a verbal task can improve alertness and if performance changes are associated with changes in alertness as measured by EEG.
Background:
Previous research has shown that a secondary task can improve performance on a short, monotonous drive. The current work extends this by examining longer, fatiguing drives. The study also uses EEG to confirm that improved driving performance is concurrent with improved driver alertness.
Method:
A 90-min, monotonous simulator drive was used to place drivers in a fatigued state. Four secondary tasks were used: no verbal task, continuous verbal task, late verbal task, and a passive radio task.
Results:
When engaged in a secondary verbal task at the end of the drive, drivers showed improved lane-keeping performance and had improvements in neurophysiological measures of alertness.
Conclusion:
A strategically timed concurrent task can improve performance even for fatiguing drives.
Application:
Secondary-task countermeasures may prove useful for enhancing driving performance across a range of driving conditions.
