Radical light and sound wave therapy could slow Alzheimer's

The unusual approach to combating Alzheimer’s draws on the ability of light and sound waves to affect electrical activity in the brain. Photograph: Evan Vucci/APDoctors in the US have launched a clinical trial to see whether exposure to flickering lights and low frequency sounds can slow the progression of Alzheimer’s disease.A dozen patients enrolled in the trial will have daily one-hour sessions of the radical therapy which researchers hope will induce brain activity that protects