# Human Circadian Sensitivity to Very Short Light Pulses

> **NCT01330992** · NA · COMPLETED · sponsor: **Brigham and Women's Hospital** · enrollment: 400 (estimated)

## Conditions studied

- Circadian Rhythm Disorders

## Interventions

- **OTHER:** Ocular light or darkness exposure

## Key facts

- **NCT ID:** NCT01330992
- **Lead sponsor:** Brigham and Women's Hospital
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2009-12
- **Primary completion:** 2011-08
- **Final completion:** 2011-08
- **Target enrollment:** 400 (ESTIMATED)
- **Last updated:** 2011-08-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01330992

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01330992, "Human Circadian Sensitivity to Very Short Light Pulses". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT01330992. Licensed CC0.

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