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  1. Home
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  6. /Psychomotor Vigilance Task

Clinical trials data

Psychomotor Vigilance Task in sleep trials: 237 registered studies

Every registered sleep and sleep disorders study on ClinicalTrials.gov that names the Psychomotor Vigilance Task in an outcome measure: how often it is a primary outcome, the tests named with it, how large the studies are and when they measure it.

Registered sleep and sleep disorders studies name it in an outcome measure
237
Name it in a primary outcome, 38%
89 of 237
Of the condition's 749 studies name it, against 2% of all registered studies
32%
Other conditions
Median participants per study
60
By phase
Try the Psychomotor Vigilance Task

Tests named in the same studies

The library tests that sleep and sleep disorders studies naming the Psychomotor Vigilance Task name most often beside it.
  1. 1

    Symbol Coding35 studies, 14 as a primary outcome

  2. 2

    N-Back Task27 studies, 15 as a primary outcome

  3. 3

    Stroop Color-Word Test15 studies, 5 as a primary outcome

  4. 4

    Digit Span Test13 studies, 4 as a primary outcome

  5. 5

    Go/No-Go Task12 studies, 3 as a primary outcome

  6. 6

    Trail Making Test11 studies, 4 as a primary outcome

  7. 7

    Verbal Learning11 studies, 4 as a primary outcome

  8. 8

    Balloon Risk10 studies, 5 as a primary outcome

  9. 9

    Verbal Fluency9 studies, 2 as a primary outcome

  10. 10

    Paced Visual Serial Addition Test7 studies, 5 as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

Studies by start year

Each study counted once. 2026 is partly planned starts.
02000: 0 studies, 0 with a test as a primary outcome20002001: 0 studies, 0 with a test as a primary outcome2002: 1 studies, 0 with a test as a primary outcome2003: 2 studies, 0 with a test as a primary outcome2004: 0 studies, 0 with a test as a primary outcome2005: 2 studies, 2 with a test as a primary outcome20052006: 4 studies, 2 with a test as a primary outcome2007: 3 studies, 0 with a test as a primary outcome2008: 4 studies, 1 with a test as a primary outcome2009: 2 studies, 1 with a test as a primary outcome2010: 8 studies, 5 with a test as a primary outcome20102011: 4 studies, 2 with a test as a primary outcome2012: 3 studies, 2 with a test as a primary outcome2013: 6 studies, 2 with a test as a primary outcome2014: 7 studies, 4 with a test as a primary outcome2015: 7 studies, 2 with a test as a primary outcome20152016: 13 studies, 4 with a test as a primary outcome2017: 11 studies, 6 with a test as a primary outcome2018: 16 studies, 7 with a test as a primary outcome2019: 16 studies, 7 with a test as a primary outcome2020: 13 studies, 5 with a test as a primary outcome20202021: 17 studies, 9 with a test as a primary outcome2022: 19 studies, 7 with a test as a primary outcome2023: 17 studies, 6 with a test as a primary outcome2024: 17 studies, 3 with a test as a primary outcome2025: 17 studies, 3 with a test as a primary outcome20252026: 28 studies, 9 with a test as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

Show as a table
Registered studies by start year
Start yearStudiesA test as a primary outcome
200000
200100
200210
200320
200400
200522
200642
200730
200841
200921
201085
201142
201232
201362
201474
201572
2016134
2017116
2018167
2019167
2020135
2021179
2022197
2023176
2024173
2025173
2026289

Phases and study sizes

By phase

  • Early phase 13 studies, 2 as a primary outcome
  • Phase 18 studies, 4 as a primary outcome
  • Phase 1/24 studies, 1 as a primary outcome
  • Phase 221 studies, 2 as a primary outcome
  • Phase 2/32 studies, 0 as a primary outcome
  • Phase 311 studies, 2 as a primary outcome
  • Phase 411 studies, 4 as a primary outcome
  • Not applicable155 studies, 61 as a primary outcome
  • Observational22 studies, 13 as a primary outcome

Participants per study

102050100200
  • Phase 254 median, 26 to 135
  • Phase 3150 median, 121 to 172
  • Phase 446 median, 36 to 103
  • Not applicable57 median, 30 to 97
  • Observational100 median, 50 to 144
Participants per study. The bar spans the middle half of the studies in each phase, the mark is the median, and the axis is logarithmic. Phases with fewer than 10 studies that give a size are left out.
Show as a table
Participants per sleep and sleep disorders study that names the Psychomotor Vigilance Task, by phase
PhaseStudies with a sizeMedianMiddle half
Phase 2215426 to 135
Phase 311150121 to 172
Phase 4104636 to 103
Not applicable1515730 to 97
Observational2110050 to 144

When sleep trials measure it

Half of the primary outcomes that name the Psychomotor Vigilance Task are measured within 2 weeks of the start, and the middle half from the first day to 6 weeks. 74 primary outcomes give a duration.

Latest time point of each outcome

  • Within a day41 outcomes, 19 as a primary outcome
  • Up to 4 weeks76 outcomes, 30 as a primary outcome
  • 1 to 3 months54 outcomes, 15 as a primary outcome
  • 3 to 6 months20 outcomes, 2 as a primary outcome
  • 6 to 12 months8 outcomes, 3 as a primary outcome
  • 1 to 2 years5 outcomes, 4 as a primary outcome
  • Over 2 years1 outcomes, 1 as a primary outcome
  • No duration given32 outcomes, 15 as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

205 of the 237 outcome measures give a duration. A single visit counts as within a day.

Status, results, interventions and countries

Status

  • Recruiting54 studies, 12 as a primary outcome
  • Not yet recruiting9 studies, 4 as a primary outcome
  • Active, not recruiting8 studies, 2 as a primary outcome
  • Completed139 studies, 57 as a primary outcome
  • Stopped early13 studies, 8 as a primary outcome
  • Status unknown14 studies, 6 as a primary outcome

What they test

  • Behavioral77 studies, 30 as a primary outcome
  • Drug63 studies, 16 as a primary outcome
  • Device59 studies, 18 as a primary outcome
  • Dietary supplement8 studies, 4 as a primary outcome
  • Procedure5 studies, 1 as a primary outcome
  • Diagnostic test2 studies, 1 as a primary outcome
  • Biological1 studies, 0 as a primary outcome
  • Radiation4 studies, 2 as a primary outcome
  • Combination product1 studies, 0 as a primary outcome
  • Other55 studies, 22 as a primary outcome
  • None given7 studies, 5 as a primary outcome

Intervention types as registered. A study can list several; observational studies often list none.

Where their sites are

  • United States133 studies, 51 as a primary outcome
  • Switzerland20 studies, 3 as a primary outcome
  • France17 studies, 5 as a primary outcome
  • Singapore10 studies, 8 as a primary outcome
  • Canada9 studies, 0 as a primary outcome
  • Australia8 studies, 0 as a primary outcome
  • Netherlands8 studies, 0 as a primary outcome
  • Taiwan7 studies, 1 as a primary outcome
  • Italy6 studies, 0 as a primary outcome
  • Sweden6 studies, 3 as a primary outcome
  • Denmark5 studies, 1 as a primary outcome
  • Norway5 studies, 3 as a primary outcome

33 countries in all. A study with sites in several counts in each; 9 list no site.

Reported results

Completed studies with results posted on ClinicalTrials.gov, a results paper the registry links to the study, or both.

Completed sleep and sleep disorders studies that name the Psychomotor Vigilance Task: 83 of 139, 60%

Every completed study with a cognitive outcome: 3,626 of 7,953, 46%

Completed sleep and sleep disorders studies that name the Psychomotor Vigilance Task and every completed study, by how they reported results
ResultsCompleted sleep and sleep disorders studies that name the Psychomotor Vigilance TaskEvery completed study
Results on ClinicalTrials.gov and a paper20, 14%776, 10%
Results on ClinicalTrials.gov only16, 12%1,139, 14%
A results paper only47, 34%1,711, 22%
Neither56, 40%4,327, 54%

The 237 studies

Filter by phase, sponsor, status, country, intervention, outcome list, size and start year. Each study links to its record on ClinicalTrials.gov.
ConditionSleep and sleep disorders
TestThe Psychomotor Vigilance Task

237 studies match. 89 name the Psychomotor Vigilance Task in a primary outcome. Median size 60 participants. Median time to the primary outcome: 2 weeks.

Loading 237 studies; the filters turn on when they arrive.

By start year
01020302000: 0 studies, 0 naming the Psychomotor Vigilance Task in a primary outcome20002001: 0 studies, 0 naming the Psychomotor Vigilance Task in a primary outcome2002: 1 studies, 0 naming the Psychomotor Vigilance Task in a primary outcome2003: 2 studies, 0 naming the Psychomotor Vigilance Task in a primary outcome2004: 0 studies, 0 naming the Psychomotor Vigilance Task in a primary outcome2005: 2 studies, 2 naming the Psychomotor Vigilance Task in a primary outcome20052006: 4 studies, 2 naming the Psychomotor Vigilance Task in a primary outcome2007: 3 studies, 0 naming the Psychomotor Vigilance Task in a primary outcome2008: 4 studies, 1 naming the Psychomotor Vigilance Task in a primary outcome2009: 2 studies, 1 naming the Psychomotor Vigilance Task in a primary outcome2010: 8 studies, 5 naming the Psychomotor Vigilance Task in a primary outcome20102011: 4 studies, 2 naming the Psychomotor Vigilance Task in a primary outcome2012: 3 studies, 2 naming the Psychomotor Vigilance Task in a primary outcome2013: 6 studies, 2 naming the Psychomotor Vigilance Task in a primary outcome2014: 7 studies, 4 naming the Psychomotor Vigilance Task in a primary outcome2015: 7 studies, 2 naming the Psychomotor Vigilance Task in a primary outcome20152016: 13 studies, 4 naming the Psychomotor Vigilance Task in a primary outcome2017: 11 studies, 6 naming the Psychomotor Vigilance Task in a primary outcome2018: 16 studies, 7 naming the Psychomotor Vigilance Task in a primary outcome2019: 16 studies, 7 naming the Psychomotor Vigilance Task in a primary outcome2020: 13 studies, 5 naming the Psychomotor Vigilance Task in a primary outcome20202021: 17 studies, 9 naming the Psychomotor Vigilance Task in a primary outcome2022: 19 studies, 7 naming the Psychomotor Vigilance Task in a primary outcome2023: 17 studies, 6 naming the Psychomotor Vigilance Task in a primary outcome2024: 17 studies, 3 naming the Psychomotor Vigilance Task in a primary outcome2025: 17 studies, 3 naming the Psychomotor Vigilance Task in a primary outcome20252026: 28 studies, 9 naming the Psychomotor Vigilance Task in a primary outcome

2026 is partly planned starts.

Show as a table
Matching studies by start year
Start yearStudiesAs a primary outcome
200000
200100
200210
200320
200400
200522
200642
200730
200841
200921
201085
201142
201232
201362
201474
201572
2016134
2017116
2018167
2019167
2020135
2021179
2022197
2023176
2024173
2025173
2026289

Library tests named most

  • Psychomotor Vigilance Task237 studies, 89 as a primary outcome
  • Symbol Coding35 studies, 14 as a primary outcome
  • N-Back Task27 studies, 15 as a primary outcome
  • Stroop Color-Word Test15 studies, 5 as a primary outcome
  • Digit Span Test13 studies, 4 as a primary outcome
  • Go/No-Go Task12 studies, 3 as a primary outcome
  • Trail Making Test11 studies, 4 as a primary outcome
  • Verbal Learning11 studies, 4 as a primary outcome
  • Balloon Risk10 studies, 5 as a primary outcome
  • Verbal Fluency9 studies, 2 as a primary outcome

Largest condition groups

  • Sleep and sleep disorders237 studies, 89 as a primary outcome
  • Pain and fatigue19 studies, 7 as a primary outcome
  • Substance use and addiction10 studies, 3 as a primary outcome
  • Obesity and diabetes9 studies, 1 as a primary outcome
  • Depression and bipolar disorder7 studies, 2 as a primary outcome
  • Healthy volunteers7 studies, 1 as a primary outcome
  • Cardiovascular disease5 studies, 0 as a primary outcome
  • Parkinson's disease4 studies, 0 as a primary outcome
  • Aging, frailty and exercise4 studies, 1 as a primary outcome
  • Lung disease4 studies, 1 as a primary outcome
  • Dementia and Alzheimer's3 studies, 1 as a primary outcome
  • Mild cognitive impairment3 studies, 1 as a primary outcome

Phases

Participants

Lead sponsor: industry 29, NIH 1, other 207. Interventional 215, observational 22.

As a primary outcomeSecondary or other outcomeThe Psychomotor Vigilance Task

The studies, newest registration first

Each number opens the study's record on ClinicalTrials.gov.

Registered studies that match the filters, newest registration first, with the library tests each one names and the outcome list that names them.
StudyStartPhaseConditionsParticipantsLead sponsorStatusLibrary tests named, with the latest time point
NCT07897474Start2026PhaseObservationalConditionsSleep and sleep disordersParticipants100Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Trail Making TestPrimary
  • Stroop Color-Word TestPrimary
  • Digit Span TestPrimary
  • Symbol CodingPrimary
  • Psychomotor Vigilance TaskPrimary
NCT07889466Start2025PhaseNot applicableConditionsSleep and sleep disorders, Pain and fatigueParticipants203Lead sponsorOtherStatusCompletedLibrary tests named
  • Psychomotor Vigilance TaskPrimary6 weeks
NCT07848659Start2026PhasePhase 1ConditionsSleep and sleep disordersParticipants12Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskPrimary4 days
NCT07846865Start2026PhasePhase 2/3ConditionsObesity and diabetes, Sleep and sleep disordersParticipants256Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Psychomotor Vigilance TaskOther outcome12 months
  • Spatial Working MemoryOther outcome12 months
NCT07830056Start2025PhasePhase 4ConditionsSleep and sleep disordersParticipants33Lead sponsorOtherStatusRecruitingLibrary tests named
  • N-Back TaskPrimary1 week
  • Go/No-Go TaskPrimary1 week
  • Psychomotor Vigilance TaskPrimary1 week
  • Task Switching TestPrimary1 week
  • Finger Tapping TaskPrimary1 week
  • Balloon RiskSecondary1 week
NCT07766343Start2026PhaseNot applicableConditionsSleep and sleep disordersParticipants760Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary9 weeks
NCT07744581Start2026PhaseNot applicableConditionsSleep and sleep disordersParticipants25Lead sponsorOtherStatusActive, not recruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary2 weeks
NCT07695246Start2026PhaseNot applicableConditionsAging, frailty and exercise, Sleep and sleep disordersParticipants183Lead sponsorOtherStatusRecruitingLibrary tests named
  • N-Back TaskSecondary6 months
  • Card Sorting Test (Berg)Secondary6 months
  • Psychomotor Vigilance TaskSecondary6 months
  • Stop-Signal TaskSecondary6 months
NCT07678918Start2026PhaseObservationalConditionsSleep and sleep disordersParticipants86Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Psychomotor Vigilance TaskPrimary1 week
NCT07639229Start2025PhaseNot applicableConditionsSleep and sleep disordersParticipants64Lead sponsorOtherStatusCompletedLibrary tests named
  • Psychomotor Vigilance TaskSecondary4 weeks
NCT07613710Start2025PhasePhase 1ConditionsSleep and sleep disordersParticipants104Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskPrimary2 weeks
NCT07608614Start2025PhaseNot applicableConditionsSleep and sleep disordersParticipants16Lead sponsorOtherStatusRecruitingLibrary tests named
  • Digit Span TestSecondary
  • Symbol CodingSecondary
  • Go/No-Go TaskSecondary
  • Psychomotor Vigilance TaskSecondary
NCT07584538Start2026PhaseNot applicableConditionsSleep and sleep disordersParticipants75Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary3 weeks
NCT07545421Start2026PhaseNot applicableConditionsSleep and sleep disordersParticipants100Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary
NCT07542756Start2026PhasePhase 4ConditionsSleep and sleep disordersParticipants1,200Lead sponsorOtherStatusRecruitingLibrary tests named
  • Symbol CodingSecondary6 months
  • Psychomotor Vigilance TaskSecondary6 months
NCT07540897Start2026PhasePhase 3ConditionsSleep and sleep disordersParticipants150Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary12 weeks
NCT07502443Start2026PhasePhase 3ConditionsSleep and sleep disordersParticipants176Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary12 weeks
NCT07495592Start2026PhaseNot applicableConditionsSleep and sleep disorders, Pain and fatigueParticipants32Lead sponsorIndustryStatusCompletedLibrary tests named
  • Stroop Color-Word TestSecondarysame day
  • Psychomotor Vigilance TaskPrimarysame day
NCT07494084Start2026PhasePhase 4ConditionsObesity and diabetes, Sleep and sleep disordersParticipants48Lead sponsorOtherStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary6 days
NCT07477184Start2026PhaseNot applicableConditionsAging, frailty and exercise, Sleep and sleep disorders, Anxiety, PTSD and OCDParticipants50Lead sponsorOtherStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary12 weeks
NCT07455383Start2026PhasePhase 3ConditionsSleep and sleep disorders, Pain and fatigueParticipants150Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary12 weeks
NCT07409883Start2026PhaseObservationalConditionsSleep and sleep disordersParticipants28Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Psychomotor Vigilance TaskPrimarysame day
NCT07363720Start2026PhasePhase 3ConditionsSleep and sleep disordersParticipants98Lead sponsorIndustryStatusActive, not recruitingLibrary tests named
  • Symbol CodingSecondary4 months
  • Psychomotor Vigilance TaskSecondary4 months
NCT07355842Start2026PhaseNot applicableConditionsParkinson's disease, Sleep and sleep disordersParticipants80Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary18 months
  • Stroop Color-Word TestSecondary18 months
  • Verbal LearningSecondary18 months
  • Verbal FluencySecondary18 months
  • Digit Span TestSecondary18 months
  • Category FluencySecondary18 months
  • Picture Naming TestSecondary18 months
  • Psychomotor Vigilance TaskOther outcome18 months
  • Complex Figure Copy and RecallSecondary18 months
  • Finger Tapping TaskSecondary18 months
  • Sustained Attention to ResponseOther outcome18 months
  • Line Angle MatchingSecondary18 months
NCT07337915Start2026PhaseNot applicableConditionsSleep and sleep disordersParticipants72Lead sponsorOtherStatusRecruitingLibrary tests named
  • Psychomotor Vigilance TaskSecondary4 weeks

Page 1 of 10

Questions, answered from the data

How many sleep trials use the Psychomotor Vigilance Task?

237 registered sleep and sleep disorders studies on ClinicalTrials.gov name it in an outcome measure, 89 of them in a primary outcome: 32% of the condition's 749 studies with a cognitive outcome, against 2% of all of them. It is the test sleep trials name most.

Which tests do sleep trials use with the Psychomotor Vigilance Task?

Symbol Coding (35 studies), the N-Back Task (27 studies) and the Stroop Color-Word Test (15 studies).

How many participants do phase 2 sleep trials that use the Psychomotor Vigilance Task enroll?

Half of the phase 2 studies that name it enroll 54 participants or fewer, and the middle half enroll 26 to 135. 21 of them give a size.

When do sleep trials measure the Psychomotor Vigilance Task?

Half of the primary outcomes that name the Psychomotor Vigilance Task are measured within 2 weeks of the start, and the middle half from the first day to 6 weeks. 74 primary outcomes give a duration.

How many completed sleep trials that use the Psychomotor Vigilance Task have reported results?

83 of the 139 completed studies that name it, 60%, have reported results: 36 posted them on ClinicalTrials.gov, 67 have a results paper linked to the registry record, and 20 did both. The other 56 show neither. Of all completed studies with a cognitive outcome, 46% have reported results.

More on the Psychomotor Vigilance Task and sleep and sleep disorders

  • Every cognitive test in sleep trials: 749 studies
  • The Psychomotor Vigilance Task in all clinical trials: 395 studies

Other tests in sleep trials

  • Stroop Color-Word Test89
  • Symbol Coding89
  • Trail Making Test85
  • Verbal Learning66
  • Digit Span Test63
  • Verbal Fluency58
  • N-Back Task51

How the studies are counted

For each test family, the census runs ClinicalTrials.gov's own outcome search for the family's names and reads every study first posted by the day the family was counted. These studies were read on 10 November 2026. A study counts once on a page, however many tests it names. Counts for a test cover every version of the task under any of its names, so a page can count studies that used a commercial version.

The census adds two things to each record and changes nothing in it: which outcome list names the test (primary, then secondary, then other), and the condition groups, matched on the study's condition names and MeSH terms. A study can fall in several groups; one whose only condition is cognitive impairment or decline falls in “Cognitive impairment and decline”. Studies that name only instruments outside the library count in every total and share but are not listed.

A second read on 10 November 2026 added each study's overall status, whether results are posted, its intervention types, the countries of its sites and the time frame of the outcome that names each test. A time frame counts by the latest time point it names: “Baseline, 12 and 24 weeks” is 24 weeks, a single visit is within a day, and one that names no duration, such as “end of treatment”, is left out of the timings.

A third read on 10 November 2026 added the papers the registry links to each study: those its sponsor lists as reporting results, and those PubMed links to it through the study's NCT number. A study has a results paper when one of them came out in or after the month of its primary completion and PubMed does not class it as a protocol, review or comment. A paper that never gives the NCT number is not linked, so some studies counted as reporting neither did publish.

Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine, which does not endorse these pages. Every study line is in the data release 2.1.0, and the explorer's own file is clinical-trials-studies.json.

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