The sweet spot of intra-brain communication is 40 Hz (Gamma waves) and studies have shown that people with certain forms of dementia, including Alzheimer’s disease, have decreased brain activity in the 40 Hz area. Research by Professor Lee Bartel et al. has shown that exposure to 40 Hz vibrations can, in as little as six sessions of 30 minutes each, have a significant impact on mental stability, specifically an average gain of 12 per cent on the total Alzheimer’s test.
An interesting article in Scientific American discusses a study that links 40 Hz sound and 40 Hz light to a decrease in the amount of amyloid plaques and tau tangles in mice, both of which are significant markers for Alzheimer’s Disease.
Neuroscientist Dr. Li-Huei Tsai, director at The Picower Institute for Learning and Memory at Massachusetts Institute of Technology, states “This is the first time we’ve seen that this noninvasive stimulation can improve cognitive function. It’s not a drug or an antibody or anything, it’s just light and sound.”
After dissecting “the mice brains afterward, the amount of amyloid plaques and tau tangles in the mice that saw the [40 Hz] light had plummeted. It was the most remarkable thing,” Tsai says. “The light flicker stimulation triggers a tremendous microglia response. These are the brain’s immune cells that clear cell debris and toxic waste including amyloid. They’re impaired in Alzheimer’s disease, but [the light] seems to restore their abilities.”
UPDATE:
Human trials begin.
https://newatlas.com/medical/light-sound-therapy-alzheimers-disease-human-trials/
Keith Loach 