[Eeglablist] question regarding epochs extracting

[Stephen Politzer-Ahles]

Hello Ida,

Are you planning to get ERPs locked to participants' responses? If so, you
can just extract epochs using the participant responses, rather than S1 and
S11, as the events.

Best,
Steve Politzer-Ahles

On Sun, Apr 22, 2012 at 4:55 AM, ida miokovic <ida.miokovic at gmail.com>wrote:

> Hello everyone,
>
> I already posted one question when I remembered I have more of them. So,
> here it is:
>
> - I am working with eeg recordings where subjects performed tasks whenever
> they wanted during a period within two events (markers). I plan to do the
> filtering of the data (lowpass and notch) and to re-reference them to the
> average data (ref electrode was Cz). After that, I should do the epochs
> extracting, but as I understand EEGLAB does that (within GUI) for each
> event in defined interval before and after the event.
>
> My problem is that I have for example two events - S1 and S11 which denote
> start and the end of the experiment. After S1 occurs, 10 seconds (or
> similar) after S11 occurs and the subjects are performing tasks within that
> period whenever they want. Is there a way for me to say "extract epochs
> between events S1 and S11"?
>
> Thank you once again.
>
> Ida
>
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-- 
Stephen Politzer-Ahles
University of Kansas
Linguistics Department
http://www.linguistics.ku.edu/
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