Seeing the Light Beyond Pharmaceuticals

Flashing lights and pulsing sounds may curb the signs of Alzheimer’s in the brain, according to MIT research on mice that is now being tried out on humans.

The discovery, published in Cell, found that light and sound stimulation at precisely 40 hertz can clear Alzheimer’s-related plaque from their brains. Why? One theory is that the steady stimulation may reset abnormal brain activity triggered by the disease, which often causes hyperactive neurons.  

There is no cure for Alzheimer’s and precious few effective treatments—so this noninvasive, low-cost new approach is promising. But it’ll be some time before a notable therapeutic effect can be measured in people.

Scientific American


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