[Eeglablist] same baseline for different epochs

[arno delorme]

Dear Marika,

if you are using a STUDY, you may define 4 conditions "squeesing=1,  
releasing=1", "squeesing=1, releasing=2", "squeesing=2, releasing=1",  
and "squeesing=2, releasing=2" in the STUDY GUI menu. Then when  
computing ERSP (event related spectral perturbations), EEGLAB will  
automatically use the same baseline for all conditions (which is the  
average of the ERSP of all conditions). You may disable that option in  
the graphical interface that deals with ERSP options for STUDY.

Hope this helps,

Arno

On 23 oct. 08, at 01:37, Marika Berchicci wrote:

> Hi EEGlab users,
>
> I have two different type and position, like this: squeezing=1 and  
> releasing=2, repeated like 5 times in the continuous EEG data. I 'd  
> like to have the same baseline for both the events (squeezing and  
> releasing), in order to get desynchronization and synchronization  
> referred to the same control position before the squeezing event. I  
> found out that EEGlab allows to set the baseline only if it fallows  
> in the epochs' window time. Is it correct?
>
> Any advise and suggestion would be really appreciated.
>
> Thanks in advance,
>
> Marika