Better Performance on the Psychomotor Vigilance Task Is Associated with Longer Sleep Duration and Lower Self-Reported Sleep Need in the Real World.

The psychomotor vigilance task (PVT) is sensitive measure of performance impairment arising from sleep loss and circadian misalignment. Some individuals are able to maintain stable, good performance during laboratory-imposed sleep restriction. It is unclear whether such individuals need less sleep or whether they are more resilient to the effects of sleep loss. We aimed to characterize the relationship between sleep duration and perceived sleep need with PVT performance under real-world conditions.