[Eeglablist] is it possible to undo epoching?

[Tarik S Bel-Bahar]

Hi Luuk, some quick thoughts below, best wishes.

See the eeglab function list for a funciton like epoch2continuous or vice
versa (the name of the function might be slightly different than what I
remember). ERPLAB also has a similar function I believe.

What you are trying to do should work as long as you don't have missing
data between your 3.5 sec epochs. But do note that some time samples may be
dropped when you do 3.5s epoching.

With simple matlab coding one can also "join up the existing epochs" into a
continuous signal.

For sanity's sake, I would recommend having two kinds of epoched data sets
computed earlier in your pipeline.

If you haven't had a chance to, try googling eeglablist + your topic.

Thanks for letting the list know if you come up with a satisfactory
solution, so that other users can benefit from your experiences.








On Thu, Mar 22, 2018 at 5:22 AM, Luuk Lamens <luuklamens94 at gmail.com> wrote:

> Dear all,
>
> I have already epoched datasets to epochs of 3.5s in length, however right
> now I want to take a look at epochs of 10s in length. Is there an easy way
> to undo the epoching so I have a continuous dataset which I can epoch again
> but now with longer epochs? (I have the original EEG datasets however these
> need to be filtered/re-referenced etc again and this takes approx. 30 min
> per dataset and I have about 60 datasets so if only this epoching step can
> be undone this would save a lot of time :) ).
>
> With kind regards,
> Luuk Lamens
> University of Amsterdam
>
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