[Eeglablist] Efficiently removing period of trials in complete study

[Tarik S Bel-Bahar]

Hello Luuk, some suggestions below. Best wishes.

Examine the outputs of eegh after doing the time removal you want once via
the gui for one file.
You probably want to do this outside of study (ie before building your
study).
use what you get from eeg to make a script that does the following:

1. Open a file

2. Make a list of times to drop for each trial (ie, from the start of each
trial to 1000 ms into each trial). (This can be determined by looping
through each trial and getting a start/end time to drop or keep for each
trial. then that info is given to the rejection function.

3. Drops those times, leaving the data you want remaining (basically, drop
all the times from all the trials all at once)

4. Save the file


Once you've determined your script is working correctly, then insert into
loop that does it for all your files, loading/processing each one at a time.
If you have a study loaded, you can alternatively loop/process/resave each
loaded file, but I would recommend not doing the above loop on a set of
loaded study files.

A smarter but harder way would be to hack into the study data structure,
but one needs to be an advanced eeglab and matlab user to do that.

If you have some success, an example solution, or more questions, please
let the list know so that other users can benefit from your experiences.











On Thu, Feb 1, 2018 at 9:53 AM, Luuk Lamens <luuklamens94 at gmail.com> wrote:

> Dear Eeglab-community
>
>
>
> Currently I am perform EEG-analysis in eeglab and I am now facing a
> problem I could solve with a couple of hours work but I am curious (and
> would be relieved) if there is a more efficient way.
>
>
>
> I have created a study of multiple datasets and each dataset consists of x
> number of trials, each trial lasts 3.5s (1s pre-stimulus and 2.5
> post-stimulus). Now is there an easy way to remove the first second of each
> trial in all datasets in the whole study?
>
>
>
> I could do it dataset by dataset with edit > select data function but this
> takes quite some time.
>
>
>
> I hope you can help me, thanks in advance!
>
>
>
> With kind regards,
>
> Luuk Lamens
>
> University of Amsterdam
>
>
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.
> ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to
> eeglablist-request at sccn.ucsd.edu
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20180201/dc2ad049/attachment.html>