Light was just one way to trick the parts of the brain into humming in the key of gamma. Sounds can also manage this in other areas.

MIKE MCRAE 15 MAR 2019

Clumps of harmful proteins that interfere with brain functions have been partially cleared in mice using nothing but light and sound.

Research led by MIT has found strobe lights and a low pitched buzz can be used to recreate brain waves lost in the disease, which in turn remove plaque and improve cognitive function in mice engineered to display Alzheimer’s-like behaviour.

Read more: https://www.sciencealert.com/astonishing-new-study-treats-alzheimer-s-in-mice-with-a-light-and-sound-show