com/dp/B015E23BHC A good product around 20 dollars. The plus side is that it comes with the remote. The remote controls the machine well.
Unique visual stimulation may be new treatment for Alzheimer's
Using LED lights flickering at a specific frequency, MIT researchers have shown that they can substantially reduce the beta amyloid plaques seen in Alzheimer's disease, in the visual cortex of mice. This treatment appears to work by inducing brain