U.S., Jan. 8 -- ClinicalTrials.gov registry received information related to the study (NCT07323121) titled '40 Hz Flickering for Insomnia in Parkinson's Disease' on Dec. 11, 2025.
Brief Summary: This randomized, single-blind, controlled clinical trial aims to evaluate the efficacy and safety of 40 Hz flicker light stimulation for insomnia in patients with Parkinson's disease (PD). Patients with PD and clinically significant insomnia will be randomly assigned in a 1:1 ratio to receive either 40 Hz flicker light or control light for 30 minutes every night at bedtime for 7 consecutive days, in addition to standard antiparkinsonian treatment.
The primary objective is to determine whether 40 Hz flicker light stimulation improves PD-related ins...