I would be peeved if people called my research "bad science" because some pop. sci. article doesn't understand it.
I can recall quite easily that a while back they published an article confirming ESP, and then refused to publish a replication of the same paper stating no results.
Because the first one sells issues and the second one doesn't.
Here’s the citation:
Bem, D. J. (2011). Feeling the future: Experimental evidence for anomalous retroactive influences on cognition and affect. Journal of Personality and Social Psychology, 100(3), 407-425.
Nature did publish a thing on “water memory” in the 1980s. To their (partial) credit, it was published with an editorial pointing out how unlikely the findings were.
They have neural plaques, artificially, chemically induced, that are coincident with Alzheimer’s in humans.
Wife works in a related field of neuro-sci, and regularly laments this difference, especially how it's played up in both in reporting and in assuming consistency in treatment and response. To the best of my knowledge there's not even consensus that plaques are the "root cause" we should be focusing on, so this sort of model may be multiple steps removed from applicability. (Similar problems exist even in 'more well understood' neurological systems, e.g. early vision pipeline)
It's an unfortunate but very real limitation to the current research that I think is important to understand so as to be realistic about the progress and directions of study. To be very precise, I say this as someone who, both of of scientific interest, and selfish interest (Alzheimers in my family) loves that this research is happening.
The amyloid hypothesis has been pretty popular for ~25 years, and it's pretty clear that the plaques have something to do with Alzheimers, but it's been a absolute disaster as a treatment target. It feels very much like treating a fever by slathering the patient in antiperspirant.
Biogen announced this morning that they're giving up on Phase III trials of aducanumab, an antibody that was supposed to target and remove the plaques (their stock is doing...badly as a result). https://www.reuters.com/article/us-biogen-alzheimers/biogen-...
There were two other big failures last year here too, as this nice little Nature News piece describes: https://www.nature.com/articles/d41586-018-05719-4
I listened to a whole bunch of these videos, and while I wasn't measuring my memory, I did pay close attention to how the sounds made me feel, and this one particular made me feel strangest: . Unfortunately, the sound fades in and out and the effect goes with it. I wish it could have had stayed at a steady volume so that the effect could be sustained. If you watch it, just ignore the cheesy graphics and listen.
Here are some other interesting ones: , , , , 
Video  is actually supposedly 40 Hz.
 - https://www.youtube.com/watch?v=2-eTVW8VMRQ
 - https://www.youtube.com/watch?v=xG22hV-gMsY
 - https://www.youtube.com/watch?v=ZGHbKWGgH_E
 - https://www.youtube.com/watch?v=lhZPMTpW-gg
 - https://www.youtube.com/watch?v=9-yz8l4Do-U
 - https://www.youtube.com/watch?v=5lN3X5qVoqQ
The ones that are 20hz might make you feel a bit weird because there's not much amateur audio equipment that would do anything other than distort at that low end of the frequency range.
It does say binaural though, so maybe it's panning left/right at 40hz rather than playing a sound-wave at 40hz. If that's the case it's not the same as what the article states: "40 hertz tone".
Here's an online tone generator  that will play a sine-wave at 40hz.
There's an absolute shedload of woo-woo stuff on the purported consciousness-enhancing benefits if you google around. That's not to say they definitely don't do funny things to your brain.
I actually just went in to Ardour and edited down that one "20 Hz" video I mentioned made me feel weird  so that it played the loudest part continuously instead of fading in and out, and then listened to it again and after 5 or 10 minutes of listening to it I felt really weird again, and started to get worried about what it might be doing to me, so I stopped.
It's really interesting, though, and I hope some serious research is conducted on this sort of sound's psychological effects.
Oh god, yes, and it isn't even new. Back around 2005, I ran into a web site selling audio files which they claimed would cure addictions, attract romantic partners, improve luck...
I think they've backed down on some of those claims over the last 30 years, but they'll be happy to take your money for a 5 day onsite retreat.
"the base frequency is 183.58 and the "binaural beat" frequency is 40hz - meaning the difference in the left ear and right ear is 40hz. The left ear plays 183.58 and the right ear plays 223.58hz the difference being 40hz. "
Perhaps the binaural effect does have some benefits, but personally I was struggling to listen to that video for more than 30 seconds or so without feeling both mildly sick and annoyed at the same time! However, I've been listening to the 40 hertz tone from the link I posted above for a good 10 minutes now without any bother. It's quite relaxing after a while actually.
Another tone generator that I've used -- https://mynoise.net/NoiseMachines/isochronicBrainwaveGenerat...
I like binaural beats, some give me an ASMR like effect (ASMR videos made with binaural backgrounds b work well for me too).
So its a high pitched sound played in 40 Hz bursts.
Anyone have a generator for something like that? (though 10 kHz can be annoying)
does it mean that old CRT TVs and monitors kept our Alzheimer at bay?
But it did occur to me that my years of going to raves, hearing (and feeling) sub-bass (in the 30-60hz range) could have a similar effect (especially when you throw in the strobe lights).
Whether you could see the flicker depended on the phosphor luminous decay time. If the phosphors on the inside of the bulb (which glow when excited by the UV-rich plasma discharge) had a rapid luminous decay curve, you could perceive the 120Hz flicker if you scanned your eyes across a lit bulb. The afterimage on your retina was a dashed line, the dark parts being the "too little voltage" portions of the sine wave.
You can use the afterimage trick to check out duty cycle dimming of car tail and brake lights. If they're chopped slower than ~1KHz, the smeared retinal afterimage will be chopped. Don't do this if you're moving in traffic.
> The noninvasive treatment induces brain waves called gamma oscillations.
Is this true? Does anyone have a link that explains these brain wave patterns in layman's terms? What exactly is happening to my brain when listening to these sounds?
Also, I think Ruth Benca at UCI can measure amyloid levels in humans using high-resolution EEG.