Psychomotor Vigilance Task¶
HED Task ID: hedtsk_psychomotor_vigilance
Also known as: PVT, Psychomotor Vigilance
Simple reaction to visual or auditory stimuli appearing at random intervals over 5–10 minutes; mean RT, lapses, and false starts index sustained attention.
Description¶
The Psychomotor Vigilance Task is a sustained-attention reaction time task widely used in sleep research and fatigue monitoring. Participants monitor a display and respond as quickly as possible to a visual stimulus (typically a millisecond counter) that appears at random inter-stimulus intervals (2–10 seconds) over a 5–10 minute period. The primary measure is the number of lapses (responses >500 ms), reflecting momentary failures of sustained attention. The PVT is considered the gold-standard behavioral measure of vigilance and sleepiness because it is simple, has minimal learning effects, and is highly sensitive to sleep deprivation, circadian misalignment, and time-on-task.
Inclusion test¶
Procedure |
A visual stimulus (counter or light) appears at random intervals (2–10 s); participants press a button as quickly as possible upon detection. The task runs for 10 minutes. |
Manipulation |
Test duration; inter-stimulus interval range; time of day; sleep deprivation condition. |
Measurement |
Mean RT; number of lapses (RT > 500 ms); fastest 10% RT; reciprocal RT transformation. |
Variations¶
Variation |
Description |
Justification |
|---|---|---|
Standard 10-Minute PVT |
10 minutes with 2–10 second random ISI; gold-standard protocol. |
Canonical 10-min RT task with variable ISI |
Brief PVT (PVT-B) |
3-minute version; validated against standard for most outcome metrics. |
3-min version; recognized published abbreviated instrument |
Palm PVT / Mobile PVT |
Handheld or smartphone implementations for field use. |
Handheld or mobile device; different motor and environmental context |
Auditory PVT |
Respond to auditory tones instead of visual stimuli. |
Auditory tone instead of visual stimulus; different sensory modality |
Cognitive processes¶
This task engages the following cognitive processes:
Key references¶
{‘authors’: ‘Dinges, D. F., & Powell, J. W.’, ‘year’: 1985, ‘title’: ‘Microcomputer analyses of performance on a portable, simple visual RT task during sustained operations’, ‘venue’: ‘Behavior Research Methods, Instruments, & Computers’, ‘venue_type’: ‘journal’, ‘journal’: ‘Behavior Research Methods, Instruments, & Computers’, ‘volume’: ‘17’, ‘issue’: ‘6’, ‘pages’: ‘652-655’, ‘doi’: ‘10.3758/bf03200977’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Dinges, D. F., & Powell, J. W. (1985). Microcomputer analyses of performance on a portable, simple visual RT task during sustained operations. Behavior Research Methods, Instruments, & Computers, 17(6), 652–655.’, ‘url’: ‘https://doi.org/10.3758/bf03200977’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Basner, M., & Dinges, D. F.’, ‘year’: 2011, ‘title’: ‘Maximizing Sensitivity of the Psychomotor Vigilance Test (PVT) to Sleep Loss’, ‘venue’: ‘Sleep’, ‘venue_type’: ‘journal’, ‘journal’: ‘Sleep’, ‘volume’: ‘34’, ‘issue’: ‘5’, ‘pages’: ‘581-591’, ‘doi’: ‘10.1093/sleep/34.5.581’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Basner, M., & Dinges, D. F. (2011). Maximizing sensitivity of the Psychomotor Vigilance Test (PVT) to sleep loss. Sleep, 34(5), 581–591.’, ‘url’: ‘https://doi.org/10.1093/sleep/34.5.581’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
Recent references¶
{‘authors’: ‘Basner, M., Mollicone, D., & Dinges, D. F.’, ‘year’: 2011, ‘title’: ‘Validity and sensitivity of a brief psychomotor vigilance test (PVT-B) to total and partial sleep deprivation’, ‘venue’: ‘Acta Astronautica’, ‘venue_type’: ‘journal’, ‘journal’: ‘Acta Astronautica’, ‘volume’: ‘69’, ‘issue’: ‘11-12’, ‘pages’: ‘949-959’, ‘doi’: ‘10.1016/j.actaastro.2011.07.015’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Basner, M., Mollicone, D., & Dinges, D. F. (2011). Validity and sensitivity of a brief Psychomotor Vigilance Test (PVT-B) to total and partial sleep deprivation. Acta Astronautica, 69(11-12), 949–959.’, ‘url’: ‘https://doi.org/10.1016/j.actaastro.2011.07.015’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Lim, J., & Dinges, D. F.’, ‘year’: 2010, ‘title’: ‘A meta-analysis of the impact of short-term sleep deprivation on cognitive variables.’, ‘venue’: ‘Psychological Bulletin’, ‘venue_type’: ‘journal’, ‘journal’: ‘Psychological Bulletin’, ‘volume’: ‘136’, ‘issue’: ‘3’, ‘pages’: ‘375-389’, ‘doi’: ‘10.1037/a0018883’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Lim, J., & Dinges, D. F. (2010). A meta-analysis of the impact of short-term sleep deprivation on cognitive variables. Psychological Bulletin, 136(3), 375–389.’, ‘url’: ‘https://doi.org/10.1037/a0018883’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Jewett, M. E., Dijk, D., Kronauer, R. E., & Dinges, D. F.’, ‘year’: 1999, ‘title’: ‘Dose-response Relationship Between Sleep Duration and Human Psychomotor Vigilance and Subjective Alertness’, ‘venue’: ‘Sleep’, ‘venue_type’: ‘journal’, ‘journal’: ‘Sleep’, ‘volume’: ‘22’, ‘issue’: ‘2’, ‘pages’: ‘171-179’, ‘doi’: ‘10.1093/sleep/22.2.171’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Jewett, M. E., Dijk, D.-J., Kronauer, R. E., & Dinges, D. F. (1999). Dose-response relationship between sleep duration and human psychomotor vigilance and subjective alertness. Sleep, 22(2), 171–179.’, ‘url’: ‘https://doi.org/10.1093/sleep/22.2.171’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Drummond, S. P. A., Bischoff-Grethe, A., Dinges, D. F., Ayalon, L., Mednick, S. C., & Meloy, M. J.’, ‘year’: 2005, ‘title’: ‘The Neural Basis of the Psychomotor Vigilance Task’, ‘venue’: ‘Sleep’, ‘venue_type’: ‘journal’, ‘journal’: ‘Sleep’, ‘volume’: ‘28’, ‘issue’: ‘9’, ‘pages’: ‘1059–1068’, ‘doi’: ‘10.1093/sleep/28.9.1059’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Drummond, S. P. A., Bischoff-Grethe, A., Dinges, D. F., Ayalon, L., Mednick, S. C., & Meloy, M. J. (2005). The neural basis of the Psychomotor Vigilance Task. Sleep, 28(9), 1059–1068.’, ‘url’: ‘https://doi.org/10.1093/sleep/28.9.1059’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}