[Eeglablist] ERP study

Kathleen Van Benthem kathy_vanbenthem at carleton.ca
Mon Aug 28 10:35:50 PDT 2017


​Hello Konstantina,
I also have used the EMOTIV headset in my research.
>From my understanding, you are NOT able to use data from the reference
electrode P3 (the CMS) nor the P4 (DRL) driven electrode.
If you import all the channels into EEGLAB (and click remove DC offset),
for example, you will see that only data from the 14 channels are
usable/viewable.  This is because the P3 and P4 are for reference and
common mode noise cancellation, respectively.

Hope this helps,
Kathleen

​
​Kathleen Van Benthem Ph.D., Research Fellow

Advanced Cognitive Engineering Laboratory


On Tue, Aug 22, 2017 at 4:46 AM, Konstantina Tsekoura <
tsekou at ceid.upatras.gr> wrote:

> Hello everyone,
>
> I carried out an experiment with emotiv epoc+ headset(14 channels) for my
> undergrad thesis that i show to participants a video with Colors and
> Musical Notes and i would like to preprocess these data and find if there
> is correlation between these Colors and Notes.
> Arround the internet i found some papers related to channel selection for
> Color Classification and some other papers using musical notes to their
> experiments and the first ones using temporoparietal channels and the
> second P3,P4,O1,O2, so i think that i have to use T7,T8,P7,P8,01,02.
> Am i right?
>  p3/p4 are the referrence channels in emotiv's headset. can i use them in
> some way? Can i re-referrence my data in other channels so to use P3/P4 and
> if yes, in which channels can i re-refference them?
> Sorry for wasting your time with maybe some newbie questions but i am real
> troubled with this.
> Any suggestions and/or advice will be greatly appreciated.
>
> ~Konstantina
>
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​
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