[Eeglablist] baseline correcting twice?

[Makoto Miyakoshi]

Dear Ahmad,

The definition of stationarity depends on window size. If you are using 500
ms epoch and focusing on rather short-lasting/high-frequency phenomenon,
applying the second, shorter baseline makes sense.

Makoto

On Thu, Feb 23, 2017 at 7:39 AM, Ahmad, Jumana <jumana.ahmad at kcl.ac.uk>
wrote:

> Dear EEGlab list,
>
>
>
> I segment from -1000 to 2000, but in reality I then want to resegment to
> shorter segments for the ERPs (-100 to 500).
>
>
>
>     EEG=pop_epoch( EEG,events,[-1 2],...
>
>         'epochinfo','yes');
>
>     EEG = pop_rmbase( EEG, [-100 0]);
>
>
>
>
>
>     %AR
>
>     [EEG_AR Indexes] = pop_eegthresh(EEG,1,[1:60] ,-100,100,-0.1,0.5,0,0);
>
>     EEG_AR = pop_rejepoch( EEG_AR, [Indexes] ,0);
>
>
>
> When I used the GUI originally, the pop_eegthresh wanted me to add a
> baseline period.
>
>
>
> However, now I am concerned that in the code I am baseline correcting
> twice?
>
> Please let me know if I am doing this.
>
> Thank you.
>
> Best wishes,
>
> Jumana
>
>
>
>
>
> *------------------------------------------*
>
> *Jumana Ahmad*
>
> Post-Doctoral Research Worker in Cognitive Neuroscience
>
> *EU-AIMS Longitudinal European Autism Project (LEAP) & SynaG Study*
>
> Room M1.09. Department of Forensic and Neurodevelopmental Sciences (PO 23)
> | Institute of Psychiatry, Psychology & Neuroscience | King’s College
> London | 16 De Crespigny Park | London SE5 8AF
>
>
>
> *Phone:* 0207848 0260| *Email:* jumana.ahmad at kcl.ac.uk
> <antonia.sanjose at kcl.ac.uk> | *Website:* www.eu-aims.eu | *Facebook:*
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>
>
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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