[Eeglablist] Time frequency analysis on a studyset

Arnaud Delorme arno at ucsd.edu
Thu Jan 21 08:56:25 PST 2010


Dear Cornelia,

STUDY sets works differently than datasets and they have their own  
dedicated menu to compute and visualize time-frequency  
transformations. After creating a STUDY set, you may use menu item  
"STUDY > Precompute channel measures" to precompute the time-frequency  
decomposition for all channels and all subjects. This may take some  
time but once you have done it, you will not have to do it again. You  
may then use menu item "STUDY > Plot channel measures" to plot time- 
frequency decomposition for each individual subjects or for all  
subjects pooled together. You will also be able to perform statistical  
group analysis.

The STUDY menu also contains the same type of menu for processing and  
visualizing independent components.

This part of the EEGLAB wiki deals with working with a STUDY

http://sccn.ucsd.edu/wiki/Chapter_04:_Independent_Component_Clustering

I hope this helps.
Best regards,

Arno

On Jan 8, 2010, at 5:57 AM, Cornelia McCormick wrote:

> Dear all,
>
> We are interested in hippocampal theta frequency signaling during  
> memory tasks and collected intracranial data from eight temporal  
> lobe epilepsy patients. I already analyzed each individual dataset  
> with time frequency analyses, built in eeglab, however, I cannot run  
> a group analysis. I created a studyset of all datasets but then I  
> cannot click on the "edit" or "plot" button anymore (they are just  
> not highlighted anymore). I am really stuck here and hope that  
> anybody has any idea.
>
> Thanks in advance for any comment.
> Cornelia McCormick



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