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Researcher Annabelle Singer models an experimental visor and earphones that play 40 Hertz light and sound. The current study was performed on mice. The pictured device is in human testing as a possible Alzheimer's treatment. Results from those tests are to be published in later studies separate from the current study in mice. Credit: Georgia Tech / Allison Carter
Flickering Light Mobilizes Brain Chemistry That May Fight Alzheimer’s

The hope of flickering light to treat Alzheimer's takes another step forward in this new study, which reveals stark biochemical mechanisms.