I am looking at 16 channels and have no clue how to interpret the data. It seems it links to the knowledge of basic Electroencephalogram knowledge. I cannot find any descriptions on the internet to interpret data.
Please see this related thread and links therein. By default, almost all EEG systems (except clinical types used for epilepsy), use a 'referential' montage, with one electrode acting as common reference for all other electrodes. On Cyton this reference is the SRB2 pin (closest to board).
Much easier than the Y-cable wiring suggested in the above link, would be to just derive the bipolar / longitudinal montage, via a mathematical re-referencing. There are EEG apps that can help with this.
Keep in mind that the scalp EEG (ignoring the event potentials like P300) reflects for the most part a sort of carrier wave resting potential activity of the brain beneath the electrodes. So I would not generally expect a given set of waves you detect with your 16 lead Cyton device to connect in a reliable way to the activities listed in the charts above in that electrode position of the head. For example, when using motor EEG activity to detect motor cortical activity, we may look for a decrease, not an increase in amplitude to indicate extra processing by that part of the brain, since the extra processing causes a desynchronization of waves which may drop the overall amplitudes.
Thank you. I want to learn as much as I can get for my own knowledge to have a big picture of what happens in a brain. The more I know the better I feel.
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Elizabeth, hi.
Please see this related thread and links therein. By default, almost all EEG systems (except clinical types used for epilepsy), use a 'referential' montage, with one electrode acting as common reference for all other electrodes. On Cyton this reference is the SRB2 pin (closest to board).
https://openbci.com/forum/index.php?p=/discussion/1840/cyton-bipolar-montage
Much easier than the Y-cable wiring suggested in the above link, would be to just derive the bipolar / longitudinal montage, via a mathematical re-referencing. There are EEG apps that can help with this.
https://www.google.com/search?q=eeg+re-referencing
http://www.neuro.mcw.edu/meg/index.php/EEG_re-reference_with_Brainstorm
Regards, William
There are resources on the www, or check a medical school library if one is nearby. Here is one on the web:
http://www.brainm.com/software/pubs/brain/Handbook of EEG Interpretation.pdf
I found the other info, in case anybody is interested.
Keep in mind that the scalp EEG (ignoring the event potentials like P300) reflects for the most part a sort of carrier wave resting potential activity of the brain beneath the electrodes. So I would not generally expect a given set of waves you detect with your 16 lead Cyton device to connect in a reliable way to the activities listed in the charts above in that electrode position of the head. For example, when using motor EEG activity to detect motor cortical activity, we may look for a decrease, not an increase in amplitude to indicate extra processing by that part of the brain, since the extra processing causes a desynchronization of waves which may drop the overall amplitudes.
Thank you. I want to learn as much as I can get for my own knowledge to have a big picture of what happens in a brain. The more I know the better I feel.