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NCT01330992 · ClinicalTrials.gov registry record · NA
Human Circadian Sensitivity to Very Short Light Pulses
A NA study, sponsored by Brigham and Women's Hospital.
- Completed
- Registry status
- NA
- Development phase
- 400
- Enrollment target
NCT01330992: Completed NA study, sponsored by Brigham and Women's Hospital.
NCT01330992 is a NA study that has completed, run by Brigham and Women's Hospital. The registered enrollment target is 400 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (72% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01330992, a NA study, has completed, sponsored by Brigham and Women's Hospital.
- COMPLETED
- Registry status
- NA
- Development phase
- 400 participants
- Enrollment target
Study Summary
The mammalian eye serves both visual and non-image-forming functions. New information about the non-image-forming anatomy and physiology of the eye has revealed effects of ocular light stimuli on human circadian rhythms, melatonin suppression, heart rate, pupillary reflexes, cognitive performance, alertness and sleep. The results of the proposed work can be used to make predictions about the effects of light, to make recommendations involving exposure to or avoidance of light, and to design environmental lighting, resulting in improved health and alertness and decreased errors and accidents.
Primary Outcome
Circadian phase (hours) measured before and after intervention
Interventions
- OTHER Ocular light or darkness exposure
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 400 participants |
| Start Date | 2009-12 |
| Est. Completion | 2011-08 |
| Phase | NA |
What the finished NCT01330992 record still lists
NCT01330992 is an interventional study that assigns participants to a tested intervention. The registered 400 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (72% lower).
The record links to 0 conditions, and to 1 intervention - of which Ocular light or darkness exposure is the first listed.
NCT01330992 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT01330992 about?
NCT01330992 is a clinical study titled "Human Circadian Sensitivity to Very Short Light Pulses". The mammalian eye serves both visual and non-image-forming functions. New information about the non-image-forming anatomy and physiology of the eye has revealed effects of ocular light stimuli on human circadian rhythms, melatonin suppression, heart rate, pupillary reflexes, cognitive performance, a...
What is the current status of trial NCT01330992?
This trial is currently completed. It is a NA study. The enrollment target is 400 participants. The study started on 2009-12. Estimated completion is 2011-08.
What interventions are being tested in trial NCT01330992?
The interventions under investigation include: Ocular light or darkness exposure (OTHER).
Who is sponsoring clinical trial NCT01330992?
This trial is sponsored by Brigham and Women's Hospital, which has 937 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT01330992's enrollment target sits among peer trials
400 246th of 2000 higher than 1,734 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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