Regarding PWM, isn't more than just about optimizing power? Li-Huei Tsai, neuroscientist and the director of the Picower Institute for Learning and Memory in the Department of Brain and Cognitive Sciences at MIT, "demonstrated that visual stimulation of mice with an LED flashing at 40 hertz substantially reduces the beta amyloid plaques associated with Alzheimer’s disease, likely by inducing gamma oscillations." I realize that this is a mouse model, but it directly contradicts what is stated in this video.
