MIT professor Tsai on brain wave and Alzheimer

MIT professor Li-Hauei Tsai on Li-Huei Tsai details a promising new approach to artificially stimulate gamma brain waves using light and sound therapy, to increase connectivity and synchrony and delay the onset of this deadly disease.

https://www.ted.com/talks/li_huei_tsai_could_we_treat_alzheimer_s_with_light_and_sound?

https://www.youtube.com/watch?v=ZyOMipUT_1g

Only needs a computer/tablet.  Be sure to set video quality to 2016P@60Hz

4K smart TV might also work