[Eeglablist] STUDY design - to split or not to split by condition?

[Fran Copelli]

Dear Arnaud,

Thanks for your response. Yes, I was epoching— it turns out that my issue
was in the 'Select/Edit STUDY design' window. When adding independent
variables, I was inputting each 'type' one-by-one as a 'new' variable. When
I generated my ERSPs, they would only have one graph, which lead me to
believe that there was an issue at the initial STUDY creation. However, it
turned out that I was actually only selecting the top variable, when I
should have added a new variable once and dragged to select them all.
Personally I found this a bit misleading as I assumed that this action
would merge all my variables together. But it is the solution!

Additional thanks goes to Dr. David Jensen for helping me figure this out.

Fran

SMART Lab, Psychology Department


On Thu, Jan 30, 2020 at 3:14 AM Delorme, Arnaud <adelorme at ucsd.edu> wrote:

> Dear Fran,
>
> > My understanding is that splitting participant .sets into conditions is
> an
> > outdated approach when creating a STUDY file.
>
> It is up to you. It is not necessary any more but still possible.
>
> > Despite this, I cannot find clear instructions on how to create a STUDY
> > file with the participant .sets intact.
>
> You will still need to extract data epochs. At the STUDY level you can
> then select different conditions based on the time locking event types.
>
> > It appears that even the EEGLAB wiki is outdated — in the example images,
> > you'll see that each participant has 2 sets (S253 & S254)
> > https://sccn.ucsd.edu/wiki/Chapter_02:_STUDY_Creation, 4th screenshot
> down.
>
> Yes, some of the screen captures are outdated. We need to update them.
>
> Best wishes,
>
> Arno
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