Sleep deprivation and vigilant attention.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing findings from psychomotor vigilance test research without systematic review methodology.
PubMed 18591490 · doi:10.1196/annals.1417.002
What was done
This narrative review summarizes approximately twenty years of research examining how sleep deprivation impairs vigilant attention, focusing specifically on evidence derived from the psychomotor vigilance test (PVT), a high signal-load reaction-time paradigm.
What was found
The abstract reports four primary behavioral consequences of sleep deprivation identified via the PVT, though no aggregate numerical metrics or effect sizes are provided: (1) overall response slowing, (2) an increased frequency of attentional lapses (defined as reaction times >500 ms) and errors of commission, (3) an enhanced time-on-task performance decrement during testing sessions, and (4) performance variations driven by interacting circadian and homeostatic sleep pressures.
Why it matters
It outlines the fundamental behavioral markers of attention instability during sleep loss, providing a conceptual framework linking top-down and bottom-up attentional control failures to broader cognitive deficits.
Limits
The abstract describes a narrative review without systematic search protocols, formal study selection criteria, or quantitative meta-analytic pooling. Specific sample sizes, participant demographics, and comparisons between total acute sleep deprivation versus chronic partial sleep restriction are not reported.
Cited by
- supports When sleep is impaired by deprivation or fragmentation, vigilant attention is the first cognitive domain to deteriorate.