# Light Therapy Treatment in Parkinson's Disease Patients With Daytime Somnolence

> **NCT01338649** · NA · COMPLETED · sponsor: **Northwestern University** · enrollment: 27 (actual)

## Conditions studied

- Parkinson's Disease
- Sleep Disorder; Excessive Somnolence

## Interventions

- **DEVICE:** Bright Light Treatment (Sun Ray Sunbox SB-558)
- **DEVICE:** Dim red light (Sun Ray Sunbox SB-558)

## Key facts

- **NCT ID:** NCT01338649
- **Lead sponsor:** Northwestern University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-11
- **Primary completion:** 2012-10
- **Final completion:** 2012-10
- **Target enrollment:** 27 (ACTUAL)
- **Last updated:** 2023-03-01

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01338649

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01338649, "Light Therapy Treatment in Parkinson's Disease Patients With Daytime Somnolence". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01338649. Licensed CC0.

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