What Do Different Brainwaves Mean?

The neurons in your brain don't just fire off randomly-they fire in various patterns called neural oscillations. But what do these different brainwaves mean?
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www.nature.com/nrn/journal/v13...
www.merckmanuals.com/professio...
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www.scientificamerican.com/ar...
buzsakilab.com/content/PDFs/Bu...
www.theatlantic.com/science/a...
news.mit.edu/2015/brain-waves-...
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[@clythx]

1:16 types of waves

[@zainaberh6215]

Thanks

[@elizabethjones2084]

Your hearing goes right near the center of the brain. If you listen to gamma waves, there's a good chance that vibration hits your brain and your brain starts mimicking it. When you hear an alarm, you become alert, when you hear a flowing stream of water, you become relaxed. The brain responds to sounds very well.

[@relaxyoursubconsciousmind]

I use brain waves music to relax and stay focus. Make sense now. Thank you!

[@armaximus]

The universe is made of sound and vibration. Makes sense...

[@wtz_under]

@@armaximusits constantly changing. which is just fascinating to think of

[@dayngerus]

There's this device called Muse, it reads your brain waves while you meditate and adjusts the sounds you hear to give you an indication of how active your brain is. It also shows you the brain waves of your session afterwards. This episode helped explain what I'm looking at after these sessions. Keep up the great work everyone that's working on sci show, you rock!

[@manjunathanagaraju9347]

I have a question can you please tell me

[@caseclosed9612]

There's a whole class of people that are meditating and then afterward looking at a screen going "idk wtf this is but dope"

[@pocok5000]

This is like trying to understand what your computer does from the cpu activity graph.

[@winenmonvi3599]

So true. Human are complex multi-level creatures.

[@robertochacon5338]

except when you do Event Related Potentials. EEG is more useful than what is reported in this VERY basic video. but the video is ok.

[@natclo9229]

Can help with crashes

[@sleepyheadsarah]

There's an interesting paper that explores exactly this question titled "Could a Neuroscientist Understand a Microprocessor?".

[@michaelmayers6303]

@@sleepyheadsarah will be loooking forward on how they gonna remove PSTD out of the minds of people..unless the event created a scar tissue that can be removed like cancer then grown over with new memories but then again what would happen is it would ruin your whole net work..with in ur brain

[@Kitchensink108]

If you don't produce delta brainwaves, you'll be immune to the mind control of giant flying brains.

[@stax6092]

That only works if you're your own grandfather.

[@rjmayo]

And you've somehow managed to cobble together a random assortment of other brainwaves into a working mind.

[@moukidelmar]

Kitchensink108 True. But if you're a super genius you will require the brain waves of a dumb relative to cancel out your brain waves so you're not able to be tracked by the Galactic Federation.

[@cheezesmoker8851]

The big brain am winning again, i am the greetest

[@Max-ol5sw]

@@stax6092 good point

[@Carlos-xs2ks]

All this talk about brain waves is making my mind swim in an *ocean* of thoughts.

[@blakkwaltz]

GOD DAMMIT CARLOS

[@Master_Therion]

Perhaps that's where the saying "drowning in my own thoughts" comes from.

[@sk8rdman]

I knew I should have stayed home today.

[@TGC40401]

Magic Fking School bus

[@parn2160]

Carlos SAME

[@kairos-049]

Who the hell put these in order... G, B, A, H, D? Damn

[@Darticus42]

Grant Ding probably in order of discovery?

[@revanasingh7049]

Thanks 🙏

[@cheemsoftheocean7569]

That person probably has A D H D

[@adiconstantin4598]

It's s probably in the order they have been discovered, recognised & understood 😋. And theta is equivalent with T. By the way, meditation is making us forget ?? 😁

[@rediscoveryourhealth5609]

Patanjali

[@bsienkart2937]

I've done some experimenting and research with theories about the brainwaves being associate with how our brains work and what we believe to be real about our world. Delta being the slowest - it's also the brainwave that develop first (from age 0-4 years) - this seems to be associated with belief in real - or what we believe to be real - and this brainwave seems to be the foundation of every other behavior as we grow up. Next up is theta - which controls emotions, Alpha which control feelings and beta which control logic (or that voice in your head you use to talk to yourself) - which also seems to be where conciseness resides. It's really fascinating and I haven't seen a better explanation and the experiences I have with utilizing these theories seem to be accurate. Most of this work has been explored by John C. Lilly and John Worthington. It's truly awesome that all this research and science is around to better understand the human brain and even our own purpose on this earth.

[@ilqar887]

I have high delta waves what does it mean ?

[@wtz_under]

lmao im also a philsophical ponder

[@LeslieAB30]

one important point that I think many are not aware of - consciousness comes into the brain from outside, it is not produced by the brain. We use seven completely different physical bodies at the same time. Each body exists in a different frequency range of matter, or as is normally said "It is on a different plane". Each body is using certain levels of consciousness. The more basic 'waves' are picked up by the brain and we feel as though it is in there, but no more than a radio station is in the radio receiver. Depending on how we 'tune' the brain receiver we pick up different levels of thought. By mental exercises we can get the brain to pick up higher vibrational 'thoughts' and we call that intuition. Focus more on basic materialism and the brain picks up lower frequency / basic 'thoughts.

[@mellevandenwildenberg2736]

here is how I see it: Delta: deep sleep Theta: meditative, very relaxed Alfa: for observing one thing with very high concentration beta: alert, for connecting with people and stepping out of your comfort zone gamma: most active nerves, for sensing the environment

[@amysweet3757]

Isn't it interesting delta variant the latest covid 19. Delta waves being deep sleep.

[@micarobin4663]

@@amysweet3757 No not really

[@michaelmayers6303]

Naturally im both theta and some times just dive off a diving board into water..Filled with Delta wave...

[@izdotcarter]

How’d you come to this?

[@wtz_under]

@@izdotcarteryou can search these waves up

[@olenapererva323]

A perfect delivery of information. Big Thank you to the speaker!

[@SomeBadGamer]

I am literally having my brain monitored while watching this

[@justinward3679]

Big Brother is always watching.

[@dariusduff4336]

Same

[@patrickmcauliffe7162]

Great video, exactly what I was looking for

[@parabellum4622]

So, who else watched this to get an idea of what type of waves they should play; on KZbin while they sleep?! Hmmm?

[@parabellum4622]

@Samson-qk8ms Uh, nah I don't do psychedelics...

[@michaeldaugustine9249]

I was taking an ambulatory EEG once and had to go in every day to make sure all the electrodes were still connected and to have the data downloaded. Whenever the technician would hook the device up to the computer, I could see the waves on the screen. I noticed if I tapped my finger or blinked my eyes I could see changes in the waves on different lines.

[@observer2070]

Changes in the EEG when you blinked were just occurring in Fp1 & Fp2 area (pre frontal cortex). So basically your brainwaves weren't influenced, it was just an artifact (unnatural signal) caused by the electrical activity that your moving eyelids produced.

[@simplyshorts748]

Interesting! I wish I had an EEG device at home! Your text reminds me of the ones you could read in the old Pokemon Gamboy games when talking to a random character :D

[@Silver0426]

Thank you! Very informative!

[@aquamarine3699]

Such a cool video!! I'd love to see more epilesy and seizure-related videos

[@dr.orderz557]

Thank you this really helped me understand and memorize 🙏🏽🤗

[@kolt9051]

Perfect video! Thank you!

[@vyvuong6119]

Your video is so informative and interesting :D

[@bakedcat7494]

A fellow learner

[@abdulhamidmuktar9763]

Thankyou for sharing us this knowledge

[@alfredoalarconyanez4896]

Thank you, very clear video !

[@hanyelbanna3673]

Wonderful work Thanks

[@AhaumnaSpeaks]

a nice update to this with information that we now have that shows we can stimulate different brain waves within the brain (like gamma as mentioned in this video that we cannot yet stimulate these waves)

[@charleswild3045]

C. Thomas Wild - About Inattentive ADHD - Reading - Math - Mental Images - ADHD Bulletin Board - Yahoo Group - Caffeine works for some with ADHD; food additives in FDA approved medicines and foods need better ingredient labels. (1981, 2019) Brainwaves - Beta, Alpha, Theta, Delta, etc.

[@animetrash146]

There's a lot of bad jokes in the comments of SciShow videos.

[@SK-le1gm]

Thank you for this overview of brainwaves. These are linked to the various Aristotle rhetorical “chakras”: ethos, telos, logos, pathos and kairos, in order from slowest to fastest wavelengths. Aristotle understood brain waves intuitively.

[@TheUnbotheredTexan]

Cringe buddhisn

[@wtz_under]

@@TheUnbotheredTexaneveryone has their own right to believe or have a belief. i am an atheist, but just let people be. i do meditate

[@TheUnbotheredTexan]

@@wtz_under I also do meditatr

[@TheUnbotheredTexan]

@@wtz_under But they couldn't just integrate science with some sorts of religion

[@arande3]

The part about gamma waves and Alzheimer's makes sense in the context of having endured chronic stress for a long time and not being in gamma as often as result, and then as I've recovered being in gamma mode more often

[@ob1keno227]

so amazing how complex the brain is

[@rocionaveirascabello8109]

What about binaural beats? Would you guys like to do an episode about it?

[@MonkeyDLuffy-xp1wq]

yeah right:) i wonder whether it actually works

[@michaelmayers6303]

@@MonkeyDLuffy-xp1wq To each of their own...Had weird exp...Dont want to brag about it because Iw as vapen at the time so its conclusive..How ever.Heard this song and with in this song heard bongo playing...when I heard that I felt as if im slipping under the blanket..then Snap of finger felt bottle rocket with smoldering fuse about to shoot up with in my spine..I said NOOOOoo..???? NooooOOOOOOO..? it settled..,,,was not in pain.just nerves tingling.over drive

[@mv7666]

Excellent video!!

[@flowcharttocodeconverter936]

Very good information. 👍🏻

[@kayladusseau2373]

Will you go more in depth about types of chemical and epileptic (electrical) seizures? I have had both and I would love to see a good explanation! Or at least a little more into epilepsy. Thank you 😊

[@user-df2gc2ij5s]

Thank you for the video 😊😊

[@MelisaBalcii]

I use theta waves so often. Just suppressing all my bad memories deep into my brain.

[@Cryin_Lion]

I'm sorry you have those memories and the trauma you experienced. I pray you will br restored as if nothing bad ever happened to you.

[@brb6769]

maby time if you have that and money to talk therapist about it

[@wtz_under]

what kind of bad memories? i heard that brain waves of higher frequencies lets us concentrate, think freely, and sometimes, healing problems in life

[@daviddavid7110]

Very charismatic :)!

[@rufovitela920]

great video!

[@BasZz2119]

This channel was a good idea. Also, Brit Garner

[@MrSzoSs]

Wow, I’d never think I’d see a relative of Captain Marvel talk about brain waves, it makes the information more reliable!

[@christancoding4424]

So is my brain a processor that runs at a max speed of 100hz?

[@totinospizzarolls4737]

Yeah wtf s u p e r s l o w

[@dutchik5107]

ChrisTanGaming yes. like the UPPER MAX. luckily. not as information to process as the internet has.

[@johntate6537]

Well, firstly this is only averaged out activity that you can pick up from the scalp, so that doesn't mean that every individual process at the neuronal level is happening at that speed. But, secondly - yes, the individual processes are quite slow. The ability of the human brain to process large amounts of information rests more on massive parallelism than it does on the speed of the individual processors. A typical computer only processes a few pieces of information at any one time, but it can do those individual bits of processing extraordinarily fast, several billion times a second. The human brain acts all at once. There are tens of billions of nerve cells with tens of trillions of connections all working at once. It's hard to make any meaningful comparisons, but it is probably still the case that the human brain will outperform computers for quite a while to come. If you take into account that the neural network system Google Alpha Zero, whilst analysing only about one position for every thousand analysed by Stockfish was recently able to win or draw all of its chess games against that engine (excluding when known openings were pre-programmed), then you might argue that there is another factor of a thousand of improved computing for the brain against a typical computer because the brain seeks out solutions far more efficiently, looking in the right place based on experience far more often than a computer typically would.

[@jmitterii2]

If you think about it, that's still pretty damn fast. Try counting to 100 in 1 second.

[@arande3]

The key difference is that a normal computer processor runs at 2 billion hz but with only 1 or 2 instructions per cycle, whereas your brain is performing probably billions of instructions per cycle

[@namOm-zo2dn]

Thank you very much for this information thank you

[@AN-fu2op]

Thanks! This was really interesting and helpful! Really well-presented!

[@michaelknight4828]

We have no idea how to trigger gamma wave activity in humans? Yes we do. It's called mindfulness meditation!!

[@gooldesai8547]

Correct. Also expression of gratitude and practice of loving kindness meditation.

[@tohussain6642]

Wow great subject given by you sister... all the blessings

[@taakw]

It's been a long time, since humans know how to change the gamma waves.

[@pedroba76]

Very interesting video!

[@ThePlyb]

Her gesticulations are so... definite? Idk what to call it really. It almost looks like she's using a sign language (coming from someone who doesn't know any sign languages).

[@tinaboennemann9805]

What the f ist reality!?!? 😂

[@faris2monassar]

Love you you have given us what we need

[@task82]

Cool video, well done :)

[@Slattery777]

Scishow gets the best hosts

[@charlietoole8707]

We constantly challenge our PD/ALZ clients with new skills, patterns and coordination drills, I should think that would keep us all in that learning, memorizing, processing 'gamma state' during our sessions and classes.

[@thisnthat8544]

Back in the mid 70's I was a biofeedback training subject at Menninger Clinic in Topeka. They hooked us up to an instrument that beeped a low tone for theta and a higher tone for alpha. We would train on our own daily, and once a week in their lab, where they would monitor us with fancier equipment and ask about perceived visual phenomena. Some of the subjects were eventually able to go into theta at will, but I hardly ever even got to the alpha state (got too excited when the instrument gave any kind of beep). Not sure if they ever published their findings.

[@winenmonvi3599]

Interesting story

[@idocare6538]

Thank you for this and thank you for talking fast, you know your audience. lol

[@gregsun974]

Slowly but surely..we're approaching the secrets of consciousness, not just in humans but in all sentient animals.

[@Seraitsukara]

What about isochronic tones? There's limited research that listening to them can change brain waves (though only for as long as the tone goes on) and there are claims that it can help with all sorts of mood disorders, sleep, and concentration.

[@lolsadboi3895]

I've tried using them for school work, and they seem to help.. it could just be placebo tbh

[@wtz_under]

@@lolsadboi3895everything is placebo nowadays lol

[@ozzi9816]

Hey, could you guys do a video on tulpas? Most coverage of them has been from the community aspect and not a scientific aspect, so I'd be curious to see what you guys have to say

[@BIZAMANI]

Thanks very much 🙏

[@htmalmdn]

locking for a video discussing functional MRI

[@ZeldaWolf2000]

Speaking of you occipital lobe, could you guys do a video on how blind this contains the brain? Also, deafness as well? I know that deaf people, or at least those who sign, Pay more attention to the vision then hearing people do. Learning about either of those things would be really interesting.

[@relaxyoursubconsciousmind]

I use brain waves music to relax and stay focus. Make sense now. Thank you!

[@sednafloating7027]

isn't meditation a gamma wave according to some studies on buddhist monks etc? daydreaming and meditation aren't one and the same thing?

[@ozdergekko]

Could Gamma Waves "somehow" also be related to endorphine levels? I have no idea *how* this could be the case, but considering their mysterious influence on immune cells... who knows.

[@michaelmayers6303]

Ive heard gamma is highest level you can be in when your either sitting still with eyes closed..or sleeping...as for endorphine levels..Remember your body produce hormones..so There is a may be or a theory ya got there

[@niekstolp5142]

During meditating experienced meditators can have a absurd amount of gamma waves. It wont put your bain into a state of daydreaming

[@paeden5431]

Any info on wifi waves affecting brain waves? Lots of fear about 5g going around. I'm trying to learn about the nitty grity. Do you think it's possible the frequency, amplitude and length from what ever EM is used in wifi could modify gamma waves? I know there is LRAD used for crowd control and other devices that can make you feel physically ill using (acoustic?) waves too. Just curious.

[@cobalius]

The one time i was thinking in feelings and pictures as i was drawing and mourning at the same time. And i'm sure that was a gamma wave thingy. Anyhow i guess intense creative flows are usually theta waves. And gamma is more like an epiphania or something that's so unreal and personality shifting yet creative and full of emotions that it's beyond any normal creative flow whatsoever. It's the feeling of connectivity and meaning and beauty across everything in that moment and not because of some substances or traumata.

[@Andrewsarcus]

Gamma wave meditation can be done with recordings. Binaural beats, sound recordings used by people doing Tibetan type meditation.

[@coffeelord906]

Thank you :)

[@GlenHunt]

My mind is wracked from cPTSD that has become more debilitating in recent years. It would be interesting, if not solely academic, to see how these patterns change through time and see of they can be correlated with evolving symptomology.

[@intravenousradio]

You should try neurofeedback therapy with a trained practitioner. It really works wonders with cptsd and other mental health issues. It's really helping me a lot.

[@mattlm64]

I could do with a nice dose of gamma brainwaves when I wake up in the morning.

[@COOLGODBOSS]

GOOD GOOD WELL DONE VERY HELPFUL FOR MY DEEP RESEARCH....IVE GOT LOTS OF GAMMAS GOIN ON SURELY!!! NOW I WILL EVEN MORE.

[@evildragon1774]

And then there's me *BRAINDEAD*

[@MusiCaninesTheMusicalDogs]

🎵 Brain waves! Brain waves! 🎤🎸Do I end this is all for the world to see? Brain waves, brain waves!🎶

[@busygardenmama]

Anecdotal comment, but in my experience, people with chronic pain have a lot of gamma. Maybe the constant focus/processing uses up more energy, and this reduces plaque? And maybe that's why "doing/ learning hard things" keeps our brains young?

[@papinkelman7695]

Ask doctor Banner about gamma waves.

[@rbfreitas]

Amazing

[@bradojacko8247]

When studying photobiomodulation therapy, i hear from medical practitioners that measuring high levels of delta waves is seen as a proxy for inflammation whereas measuring high levels of gamma waves is seen as a sign of proper brain function. Why would this be? Do these findings fit in with the lecture of this video? How so? Are they discussing different things using similar terminology? Which brainwave patterns and ratios would be ideal for to reduce distraction and anxiety while improving focus and memory retention/learning? Thanks for the video

[@tomcrockett7941]

Can you do a video of a subject in a gamma wave “trance” meditative state? Thanks

[@effortlessawareness8778]

When the monkeys got the answer wrong, theta waves dominated yet those are the waves associated with the most relaxation, one would assume monkeys would emit stress responses not receivingthe reward-Perhaps its more relevant to test what brainwaves dominated monkeys brains’ when their answer was wrong and they received punishment. Otherwise as you stated, theta waves are a way of saying to the brain “Hey Opps *Forget* that” Therefore their brains would likely again emit betawaves which as you say may be a way to reinforce neural connections to improve memory. Also when you either get rewarded or don’t get rewarded(No punishment, but no reward) at what point does monkey realize he is not getting reward.. In my opinion as an armchair neurologist with very little insight except for subjective experience-My take is that tnot receiving a reward (but not being punished) Causes theta waves-> state of depression knowing monkey is not getting reward -> Therefore he feels more sleepy lazy finds that hed rather sleep than to proceed without a reward Similar to humans. I realize if I dont have an objective for the day or unable to do anything constructive towards my objective lets say its out of my hands and I lack the financial means for my objective-> Im generally sleepier lazier uninterested in that day.. Brutal honesty. I’m not as excited or looking forward to the day and not as enthused and am lazy when it comes to completing day to day subsystemic tasks that have no relevance to my objective. I always considered theta as being the state of meditative mind or the state of the mind where what you imagine vividly manifesting itself, as most do. So perhaps there is a deeper dimension for that monkey to go into theta state for him to visualize and feel the objective he wishes to manifest what he desires, your brain telling you since you didn’t receive a reward that its time to visualize your desir in order for you the hologram of your reality to align with what you seek. (This goes into Project Gateway the program that studied Consciousness and was classified for some time and documents being released by the CIA in 2003, and the study/ the purpose was to expand your consciousness to be able to indeed externalize your consciousness, Remote Viewing, OBE to affect technological devices among law of affirmation being able to connect to different realities it was sort of a souped up program by Robert Monroe at the Monroe Institute where by listening to these specifically designed hemi-sync waves (binaural frequencies) one could harmonize both sides of their brains to acheive these levels that take monks and yogis lifetimes to attain.

[@celsaprado4185]

Thank you

[@salairoluk]

You should do an episode on your instincts.

[@connorgahan5197]

temporal lobe epilepsy causes mystical and even sexual experiences that could be interpreted as an alien presence actually communicating with them through what we might call telepathy

[@qlifee]

I am positive I saw brain waves at 0:07

[@CarthagoMike]

meh, it was your gpu messing with you

[@qlifee]

CarthagoMike I am pretty sure it's brain waves, I tried other devices it can't be gpu

[@parn2160]

Sultan qlifee yeah same

[@the1exnay]

You're hallucinating

[@gabijajurkeviciute2004]

Are you stupid. It’s an animation

[@starshippower88]

Please do more epilesy/seizure/episodes related videos

[@codexnecro3917]

I had two EEG's done after my first seizure, what an annoyingly boring procedure.

[@THETRIVIALTHINGS]

I wonder if the frequencies of these waves are somehow altered, they would have any effect on our thought processes, our overall cognitive capabilities and personalities.

[@CarthagoMike]

most likely they have. After all, they are constantly changing depending on the regions between which they travel in the brain. What kind of change occurs however cannot be said, since we do not exactly know what causes our thought processes and cognitive functions to work and communicate like they do in the first place.

[@janosk8392]

If chemicals can affect brain 'waves' why not?

[@kateginger]

Yes if you are interested read the Body keeps the score. The last paragraphs focus on using these waves to treat patients for ptsd anxiety depression etc. with amazing results.

[@AJKvideoproductions]

Good video :D

[@user-oc7rq9zi5w]

Thank you ✨

[@user-oc7rq9zi5w]

@Samson-qk8ms wot

[@ArashArfaee]

Everything perfect, except the part that we don't know change our brain dominant frequencies. For example, TMS and DBS are doing it effectively for a long time now!

[@techkri]

While me day dreaming that I'm thinking in a relaxed manner in my dream while sleeping.

[@TheFlacker99]

Since brains work on Hertz, can I overclock my brain?

[@AmaanC]

With transcranial direct current stimulation, yeah, you probably can to a certain extent

[@cobalius]

Just throw some nightcore, breakcore and stuff xD

[@corneliussianturi476]

just use some Praxis, so you can upgrade your brain

[@whatistruth560]

Or they zap your brain from our cell phone and other electronics..

[@missnichole702]

Amazing information. Thank you. May i suggest doctors conducting this study look into speaking with strong mediators? Meditation can alter the brain in ways modern sciences have yet to uncover. 💜💜 thank you

[@snes09]

If they could induce gamma waves in mice using light in that frequency range, could sound waves do the same thing? Humans auditory system can detect sounds at 20 Hz up to 20 kHz, so maybe there's a frequency of sound wave between 30-100 Hz that could induce gamma waves in humans.

[@kairos-049]

I literally saw Hank in the PBS Eons ad before this vid.

[@AKTheREal]

The greatest product will be the virtual reality set that tunes into brainwave frequency and into the game by creating the world in brain waves

[@Itsrichardash]

I love this woman 🦄

[@MasterofPlay7]

mind control weaponry for the government xD

[@dominicrincker8280]

3:29 don't we remember mistakes better?

[@quinxx12]

About the part at 4:23 where she says that we have no idea how we can increase the amount of gamma waves, I disagree. According to Daniel Goleman's talk on youtube about long term meditators, a study strongly implies that we can increase our gamma waves by certain types of meditation!

[@adiconstantin4598]

According to this video, (the experiment with monkey being wrong), meditation is making us forget ! 😁

[@quinxx12]

@@adiconstantin4598 Could you elaborate that? Why do you think so?

[@adiconstantin4598]

@@quinxx12 At 1:18, meditation is associated with theta waves. At 3:25, in the experiment with monkeys, when they give the wrong answer, their brain comutes on theta waves, as the monkey should forget this answer ("Oops, forget that!"). So: meditation -> theta -> forget

[@fabzy4L]

It’d be awesome if organoids from ipsc cultures could retain epigenetic identity, so we could try in vivo testing of optophotonics to study the brainwaves as therapy. Or optogenetics.

[@mathxp]

The brain uses simple geometrical pattens to picture schemas. But each schema repeats itself in multiple times as it accommodates during the course of time. As schematic circuits interfere with each other, they produce static psychedelic patterns. But as these patterns overlap, suddenly tsunamis of waves are initiated and travel across.

[@btno222]

infared electroencephalography by gamma and through high density lenses or crystals seprate for different ways of picking up said brain waves at lower uninvasive sensory infared electrodes