EEG (Electroencephalogram) Explained

An explanation of what EEG actually is and how it works. I'm currently completing a PhD in Imaging Neuroscience at KCL 🧠.
Check out my blogg! zacharycortex....
EEG Bands: www.sciencedir...
Created by: Zachary.C
Music by: James.G
...subscriber count: 45
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Comment with any questions you have! :)

[@musicisgreat123]

By far the clearest explanation I have found on EEG

[@ZacharyCortex]

Thank you very much :)

[@chiragsp8341]

I'm a data science graduate who is working on a SSVEP project. My question was 'How are brain waves even measured?', this was the only video where a clear, crisp explanation was given. There are others, but either they don't explain enough or they're not correct. One video said, '...they are non-ionizing radiation or electromagnetic radiation. They're not photons or X rays, but electromagnetic fields oscillating...'. I mean c'mon. Anyway, thanks for the explanation. Helped alot.

[@ZacharyCortex]

Thanks for the comment I really appreciate that! :)

[@idolkidd]

I have an EEG in 3 days I'm nervous! lol I will say this explanation did help a lot though, thanks Zach.

[@ZacharyCortex]

You are most welcome! good luck for the EEG! :) At least you know what all the little wires will be recording now!

[@thylatrash7668]

Your videos are so great, definitely deserves more subscribers, amazing quality!!

[@ZacharyCortex]

Thank you so much I really appreciate that! :) Working on it!

[@rMDheal]

Thank you for your great explanation!

[@ZacharyCortex]

Thanks for your comment! I'm glad if it was helpful :)

[@mrnerd73]

Thank you sir for your short and sweet explanation... Really helped ❤

[@ZacharyCortex]

Most welcome!

[@AfiaNyarkoAdu-Pako]

You make learning exciting

[@ZacharyCortex]

Thank you very much I really appreciate that! :)

[@OctoberRedMedia]

Hello just found your channel. Not sure if you’ve covered this, but could you break down what happens before and during an epileptic seizure. Both frontal And generalised. Thank you ☺️

[@ZacharyCortex]

Thanks for the comment! So I made a video on epilepsy - though dont go into specific details of before and during an epileptic seizure.....not loads is understood about this (though there are some things we understand I didn't include).........but potentially I can do a deeper dive covering these things thing! Epilepsy video can be found here kzbin.info/www/bejne/l3TTfXeKnZKMkJofeature=shared

[@jabbalahd]

Hello i want your straight honest a truth but have you ever had to eeg test someone for 5 days straight in the hospital

[@jabbalahd]

Dose it seem normal to have such a long test or dose that sound abit funny to you?

[@ZacharyCortex]

Hello! Thanks for the question. People definitely undergo 5+ days of EEG testing in hospital. Where I have seen this is on whats called an EEG-telemetry ward at the hospital where I work that is used to record EEG and also video record people who are having seizures. Doctors can then use the EEG data with the video footage to help them investigate if they have epilepsy.............something like this may be done for other possible diseases although my research is epilepsy so don't know about whether this is typical for other diseases so much. Hope that helps!

[@dharmaaryayoga]

Thank you

[@ZacharyCortex]

You're most welcome!

[@staceynolan8577]

You must love your job .very interesting. Thank you for your video

[@ZacharyCortex]

Thanks so much for the comment I really do :)

[@alexsheremett3097]

please could you tell me what creates the alpha waves (04:45)- I'm not a native

[@soobind.8532]

Fantastic video, thank you!

[@ZacharyCortex]

Thank you so much for this comment I really appreciate it!

[@christianglaser633]

good video, but the music is too loud

[@ZacharyCortex]

Thank you for the feedback I really appreciate that. Constantly trying to figure out the right music balance, please let me know if music is good/bad in other videos!

[@seriazone]

Great video. Kudos!

[@ZacharyCortex]

Thanks! :)

[@shaunmaureennixon5301]

Thank you so much i understand it so clearly! I 😊had my EEG exam and am ok.🎉❤

[@ZacharyCortex]

Thank you for the comment you are so welcome!!

[@ourshiney]

thanks, it's help me alot to understand

[@ZacharyCortex]

Thank you for the comment you are very welcome!

[@kimwannamoore43]

Very helpful thank you 🙏

[@ZacharyCortex]

Thank you for the comment you are very welcome!

[@ediewilson8040]

Hi @ZacharyCortex, which EEG cap did you use for your research and why?

[@ZacharyCortex]

Hi! Thanks for the question. Its the BrainProducts 64 Channel MR Conditional cap......honestly because at the beginning of my PhD that is what my supervisor told me the lab uses - mostly because it can be used safely with MRI and is reliable!

[@ediewilson8040]

@@ZacharyCortex thank you so much!

[@lucianasaenz1294]

Que buena explicación gracias :D

[@ZacharyCortex]

Eres muy bienvenido!

[@ladyitsme]

any updates on you AI project, will love to join the effort, i'm searching for my nitch in the AI field

[@ZacharyCortex]

Currently working on it! Writing my thesis right now!

[@laidanimeriem3406]

that was helpful

[@ZacharyCortex]

Great! Thanks for the comment :)

[@judyhc7148]

F A B U L U O S ! ! !

[@ZacharyCortex]

Thanks Judy!

[@TTBOn00bKiLleR]

Ok so 2 questions. Signals from the hypocampus for instance will be detectable only with the invasiv surgery eeg or is this surface method usable? Where do you get your training data from?

[@ZacharyCortex]

Thanks for the questions! 1) Correct, signals from the hippocampus are not detectable from scalp EEG. Invasive intracranial EEG is what is necessary to capture those signals (there are two types of intracranial EEG - one where a wire mesh is placed below the skull along the surface of the brain and another one where depth electrodes are inserted directly into the brain. Depth electrodes are how you capture hippocampus electrical activity) 2) There are training data sets online I have played with (you can google them to find them) but most of the data im looking at is from my lab in KCL - London. We have existing data sets + I have taken my own EEG data across the last 3 years. Hope that helps :)

[@emilykennedywu]

Is EEG test safe for three months old baby?

[@ZacharyCortex]

Thank you for the comment - yes it is. It is actually safe on even younger babies - born premature, if doctors suspect neurological disease they may use EEG - along with other brain scans like MRI to investigate this further. Companies make mini EEG caps to suit a much smaller head size and they usually just have less channels/electrodes on them.

[@sabtham5402]

The greatest explanation just wow

[@ZacharyCortex]

Thanks I really appreciate that!

[@samcarry8072]

Hello, may I ask where to buy the brainwave testing tool?

[@ZacharyCortex]

Hello, there are a few different companies which make them. The one my lab use (featured on my head) is BrainProducts. But they are just one of many companies who make this kind of tech

[@dkawjr]

Great video!

[@ZacharyCortex]

Thanks! Really appreciate the comment! :)