This study is testing different types of light therapy for people with mild cognitive impairment or mild Alzheimer's disease. Researchers want to see if specific light treatments can improve thinking and memory. You would be randomly assigned to one of four groups: a Rhythmic Light (40 hertz flicker) or a Placebo Rhythmic Light (random flicker), each delivered with either Circadian-Effective Light (narrowband blue light) or Placebo Light (narrowband red light). To join, you need to be diagnosed with mild cognitive impairment or mild Alzheimer's, have sleep problems, and live at home or in an assisted living facility. The main goal is to see how these light therapies affect your cognition, measured by the Montreal Cognitive Assessment (MoCA) at different times during the study. This study is currently recruiting 120 participants.

Study design

This is an interventional study with 120 planned participants. You would be randomly placed into one of four groups, each receiving a different light therapy.

What's involved

After a baseline week, you would use your assigned light therapy for two hours in the morning for 8 weeks. There will be assessments at the start, after 9 weeks, and after 14 weeks.

Compensation

Not stated in the trial record.

Follow-up

Your cognition will be assessed at the end of week 9 and again at the end of week 14, after a 4-week break from the light therapy.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.