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query

Posted: 04 Jul 2014, 04:55
by shaman
hi friends
i have acquired a 64 channel eeg signal. i see a signal with tags such as c3-p3, f3-c3 etc.
what exactly does this mean??
My aim is to obtain an individual signals from c3,c4,cz positions.
kindly help
thank you

Re: query

Posted: 04 Jul 2014, 09:13
by boulay
c3-p3 is probably the difference between the signal from those channels. Either your hardware or your software is doing bipolar acquisition. This can be useful in certain circumstances, but it is not typical with 64-ch EEG. I would guess that somewhere in the software there is a way to tell the system to do monopolar acquisition.