[Eeglablist] Retrieving rejected ICs components

Tarik S Bel-Bahar tarikbelbahar at gmail.com
Mon Apr 1 08:29:17 PDT 2019

Hello Emmanuelle, brief notes below, all the best.

Probably easiest is to keep a list of ICs you have chosen for
rejection/removal, ...and then apply the full/all ICA info to the other
file, ...and then remove the same list of ICs from the second file.

if you already rejected ICs from your first file, you should be able to
transfer the pruned IC info info to the second file without needing info
about which ICs were dropped from the first file.

If you select and remove components via the gui, you can review eegh ouput
to get the code for that step to put into a script. the eegh output will
have the list of Ics selected for removal or retaining.

if you use an ICA-classification plugin (eg, Mara) that can selects and/or
removes ICs automatically, you may be able to use eegh to get the info, or
you may have to review the plugin details/code to modify it to save out
good and rejected ICs.

As a hack, one can also just review the full ica file vs the file with ICs
removed, and determine the difference from there.

On Mon, Apr 1, 2019, 11:03 AM Emmanuelle Kristensen <
emmanuelle.kristensen at gipsa-lab.grenoble-inp.fr> wrote:

> Dear group,
> I have datasets before and after ICA computation and I would like to apply
> ICA weights on longer epochs.
>  In the dataset after ICA,the fields EEG.icawinv, EEG.icasphere and
> EEG.icaweights are filled. But the elements in EEG.reject.gcompreject are
> all equals to zeros, that is wrong. And of course, I would like to know
> what ICs components were rejected. Is there a way to retrieve what ICs
> components were rejected, without using EEG.reject.gcompreject,  please?
> Regards,
> Emmanuelle
> --
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