[Eeglablist] ICA results are not applied after copying to new data set

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Tue Nov 4 11:41:38 PST 2014

Dear Becky,

Other other day I also encountered weird behavior of eeg_checkset().
I often copy EEG.icaweight and EEG.icasphere and run EEG =
eeg_checkset(EEG, 'ica'); this usually creates EEG.icaact but it did not,
so I needed to compute it my own.

As a workaround, could you run the code without the last line? It should be


On Wed, Oct 29, 2014 at 11:39 AM, Becky Prince <becky.prince at york.ac.uk>

> Dear list,
> I've run ICA on a cleaned sets of data and then subtracted the components
> representing artifacts.  I'm now trying to copy the ICA results for each
> subject into a different data set, but it isn't working - the ICA fields
> are copied successfully, but the channel data are unaffected by ICA (i.e.
> the removed ICs are still present in the data).
> Here's the code, where ALLEEG(1) is the data set with ICA applied and with
> components removed, and ALLEEG(2) is the data set that I would like to
> apply the ICA results to.
> ALLEEG(2).icaact = ALLEEG(1).icaact;
> ALLEEG(2).icawinv = ALLEEG(1).icawinv;
> ALLEEG(2).icasphere = ALLEEG(1).icasphere;
> ALLEEG(2).icaweights = ALLEEG(1).icaweights;
> ALLEEG(2).icachansind = ALLEEG(1).icachansind;
> ALLEEG(2).etc = ALLEEG(1).etc;
> ALLEEG(2) = eeg_checkset(ALLEEG(2));
> Can anyone tell me where I'm going wrong?
> Thanks!
> Becky
> ____________________________________________
> Becky Gilbert (nee Prince)
> PhD Researcher
> http://www.york.ac.uk/psychology/staff/postgrads/becky.gilbert/
> Lab C120
> Department of Psychology
> University of York
> Heslington, York, YO10 5DD, UK
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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