Key points from article :
MIT researchers have exposed mice to a hum at 40 Hertz.
Mice developed half as many amyloid beta plaques in their hippocampus.
Sound therapy for just an hour a day induced high-speed brainwaves that were able to break down the proteins.
More effective in reaching the hippocampus than visual stimulus.
Can also be combined with physical vibrations.
Animal models were genetically engineered to develop an ailment similar to Alzheimer’s but result might not translate to humans.
The study was published in the Nature journal.