Too long; didn't listen: same thing but related to Alzheimer's disease research where scientists would induce some frequency in the brain of mice and humans to help clean up some "gunk" in the brain that's associated with the disease.
I got interested in this and related research back in 2016 when I heard that Radiolab episode, and then went on to seek out 40 Hz tones on youtube, of which there are a great variety (other useful search terms are "Gamma", "Rife" and "Delta" tones), some "pure" and others with music underlying them or mixed with some other tones. I just sought out the "pure" ones, and sampled them for a while...
None of them seemed to do anything perceptable to me, except one...[1] (ignore the cheesy visuals and just listen to the sound). It made me feel indescribably weird, and I couldn't stand listening to it for long out of concern about what it might be doing to me.
This kind of experimentation has a lot of potential, but kind of like experimenting with newly designed drugs with which humans have had virtually no experience, it might be dangerous as the effects on the human brain are unknown.
That was interesting. I felt like my face and head were ‘buzzing’/throbbing and I didn’t particularly enjoy it. It does seem to have some kind of effect outside of what I normally associate with an emotional response to sound/music. It’s kind of like a cat purring, as other commentators on YT said.
Use headphones and turn the volume up... I didn’t notice anything either until I did that and then I noticed the slight jitters down my arms. Very odd (ymmv)
Too long; didn't listen: same thing but related to Alzheimer's disease research where scientists would induce some frequency in the brain of mice and humans to help clean up some "gunk" in the brain that's associated with the disease.