Could a flickering light help Parkinson's patients sleep better?

NCT ID NCT07323121

Recruiting now Symptom relief Sponsor: Jiangsu Province Nanjing Brain Hospital Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jul 29, 2026 · Updated 3 times

Summary

This study tests whether a special 40 Hz flickering light, used for 30 minutes each night for a week, can improve insomnia in people with Parkinson's disease. Thirty participants will be randomly assigned to receive either the 40 Hz light or a control light. The main goal is to see if the light improves sleep quality as measured by a standard sleep questionnaire.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: 40 Hz flicker light device
What this could lead to: If it works, this could offer a simple, non-drug way to improve sleep for people with Parkinson's disease.
What could go wrong: This is a very small, early-stage trial with only 30 participants and a short 7-day treatment. Results may not apply to everyone, and the effect on sleep might be minimal or temporary.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

insomnia Parkinson disease sleep-wake disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

INSOMNIA PARKINSON DISEASE

Contacts and locations

Locations

The Affiliated Brain Hospital of Nanjing Medical University, 264 Guangzhou Road
RECRUITING

Nanjing, Jiangsu, 210029, China

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