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NCT04664400 · ClinicalTrials.gov registry record · NA
N-of-few Study of Pain Perception
A NA study, sponsored by Trustees of Dartmouth College.
- Completed
- Registry status
- NA
- Development phase
- 10
- Enrollment target
NCT04664400: Completed NA study, sponsored by Trustees of Dartmouth College.
NCT04664400 is a NA study that has completed, run by Trustees of Dartmouth College. The registered enrollment target is 10 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04664400, a NA study, has completed, sponsored by Trustees of Dartmouth College.
- COMPLETED
- Registry status
- NA
- Development phase
- 10 participants
- Enrollment target
Study Summary
A behavioral study that will examine how pain perception is affected by different types of conditioning and by context, with a few participants and multiple sessions ("N-of-few" design).
Primary Outcome
Each session of the experiment includes pain tasks, in which multiple thermal stimuli are delivered. Following each thermal stimulus, participants are asked to rate how painful it was, on a semi-circular computerized scale. Ratings are based on the angle (0-180), with higher angle representing higher pain ratings. In the symbolic learning procedure, cues are conditioned to different temperatures based on pictures of thermometers (instead of actual thermal stimuli as in the conditioning procedure
Interventions
- BEHAVIORAL Instructions
- BEHAVIORAL Symbolic conditioning
- BEHAVIORAL Conditioning
- BEHAVIORAL Counterfactual
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 10 participants |
| Start Date | 2021-01-22 |
| Est. Completion | 2021-05-24 |
| Phase | NA |
What the finished NCT04664400 record still lists
NCT04664400 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 10 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower).
The record links to 0 conditions, and to 4 interventions - of which Instructions is the first listed.
NCT04664400 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04664400 about?
NCT04664400 is a clinical study titled "N-of-few Study of Pain Perception". A behavioral study that will examine how pain perception is affected by different types of conditioning and by context, with a few participants and multiple sessions ("N-of-few" design).
What is the current status of trial NCT04664400?
This trial is currently completed. It is a NA study. The enrollment target is 10 participants. The study started on 2021-01-22. Estimated completion is 2021-05-24.
What interventions are being tested in trial NCT04664400?
The interventions under investigation include: Instructions (BEHAVIORAL), Symbolic conditioning (BEHAVIORAL), Conditioning (BEHAVIORAL), Counterfactual (BEHAVIORAL).
Who is sponsoring clinical trial NCT04664400?
This trial is sponsored by Trustees of Dartmouth College, which has 31 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04664400's enrollment target sits among peer trials
10 1927th of 2000 higher than 26 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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