You can find apps and computer programs that will flash light or make sounds as such frequencies. Some equipment will let you choose 40Hz light or sound, as well.
https://play.google.com/store/apps/details?id=life.alz.alzlife&gl=US&pli=1
https://www.quora.com/How-can-I-setup-LED-lights-flickering-precisely-at-40-Hz
https://www.reddit.com/r/webdev/comments/5hkz57/i_made_an_antialzheimers_40hz_gamma_flicker_based/
I think that’s around the lowest Eb on the piano, so the technology is there😉
I use one of these machines as part of my wake up routine. Its a nova pro 100. flashes light and sound. stimulates the frontal cortex.
BrainSync.com. Binaural beat audio on CDROM or MP3. Use headphones.
These researchers don’t know what they are doing. I’m sure the rat brain wave frequencies do not go anywhere near the prefrontal virtex analytical thinking neuronal fisring rate of 30 Hz.
Thus, with rats there would be minimal influence on brain function at 40 Hz.
When the human brain moves from 30 Hz to 40 Hz it goes into a higher dream state of lucid dreaming.
Above 40 Hz is moving into the gamna frequency which can cause psychotic breaks in patients.
If a person is balanced and purified enough in their consciousness, 40 Hz can lift them up. If not, it will shake them up and potentially cause damage.
I’ve been researching brain wave frequencies and Transmagnetic Cranial Stimulation techniques for 20+ years.
Seems to me that headaches will result.
“Binaural beats” pulse differing frequencies into one’s ears, which is supposed to help with changing one’s brain waves.
I have zero clue with respect to its veracity.
I call bs. The MA medical community trying to repurpose its immoral and torturous electro-therapy, being sunset by victims of psych Drs there.
All US states and counties around the world have declared electro-therapy cruel and unusual, but for the remaining psycopaths in Boston posing as Drs. Same people impose the c19 jab.
ON the other hand, here is
https://patents.google.com/patent/US6506148B2/en
Nervous system manipulation by electromagnetic fields from monitors
Granted in 2003, expiration sometime in 2021, meaning it is now in the public domain.
So just maybe, even the phrase “tin foil hat” was them announcing what they were really doing.
40-Hz Binaural beats enhance training to mitigate the attentional blink
Taken together, 40-Hz BB stimulation during training accelerates the training outcome. The improvement becomes evident not immediately, but after consolidation during sleep. Therefore, auditory beats stimulation is a promising method of non-invasive brain stimulation for enhancing training and learning which is well-suited to rehabilitation training.
https://www.nature.com/articles/s41598-020-63980-y
I already do this with trans cranial current stimulation (low current <2mA; applied through reusable electrode pads).