News Release

Can phototherapy improve cognitive function in patients with dementia?

Peer-Reviewed Publication


In an analysis of published clinical trials, investigators found that phototherapy—or exposure to sessions of bright light—may be a promising non-pharmacological intervention for lessening symptoms of dementia.

The analysis in Brain and Behavior included 12 randomized clinical trials. Results indicated that phototherapy improved cognitive function in patients with dementia, but it did not affect symptoms of depression or sleep quality.

“Further well-designed studies are needed to explore the most effective clinical implementation conditions, including device type, duration, frequency, and time,” the authors wrote.

URL upon publication:


Additional Information
The information contained in this release is protected by copyright. Please include journal attribution in all coverage. For more information or to obtain a PDF of any study, please contact: Sara Henning-Stout,

About the Journal
Brain and Behavior is a peer-reviewed, open access, interdisciplinary journal, providing rapid publication of scientifically sound research across neurology, neuroscience, psychology and psychiatry.

About Wiley
Wiley is one of the world’s largest publishers and a global leader in scientific research and career-connected education. Founded in 1807, Wiley enables discovery, powers education, and shapes workforces. Through its industry-leading content, digital platforms, and knowledge networks, the company delivers on its timeless mission to unlock human potential. Visit us at Follow us on FacebookTwitterLinkedIn and Instagram.

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.