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Clinical Trial Summary

Participants will randomly be placed into one of four groups and experience one of the four following conditions: (1) a placebo light that provides a 40 hertz (Hz) flicker (rhythmic light [RL]); (2) a placebo light with a random flicker (placebo condition for rhythmic light); (3) a light source that will stimulate the circadian system and provides a 40 Hz flicker (RL); or (4) a light source that will stimulate the circadian system and provides a random flicker (placebo condition for rhythmic light). Following a baseline week, participants will experience his/her assigned lighting condition for two hours in the morning for 8 weeks. After a 4-week washout period, a final round of assessments will be obtained. Study assessments (except for the Pittsburgh Sleep Quality Index and Montreal Cognitive Assessment) will be collected at the end of each week, for a total of 8 assessments.


Clinical Trial Description

The tailored lighting intervention used to promote circadian entrainment will provide high circadian stimulation during the day produced by narrowband blue light peaking at 470 nanometers (nm). A comparison lighting intervention (i.e., placebo lighting), a narrowband red light peaking at 630 nm, will be used as a control. Both the red and the blue light devices will also provide either the 40 hertz (Hz) flicker (RL) or the random flicker (placebo RL). For the random flicker (placebo RL), the duty cycle will be delivered with a random interval determined by a Poisson process with an average interval of 40 hertz (Hz). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05016219
Study type Interventional
Source Icahn School of Medicine at Mount Sinai
Contact Barbara Plitnick, BSN
Phone 518-242-4603
Email barbara.plitnick@mountsinai.org
Status Recruiting
Phase N/A
Start date August 22, 2023
Completion date December 31, 2026

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