Warning: ICA activities and weights mismatch when saving a dataset after pop_tesa_fastica

[GiacomoBert]

in my code I run

EEG = pop_tesa_fastica( EEG, 'g','gauss','stabilization','on' );

and when saving with pop_saveset(EEG, 'filename', [EEG.setname '.set'], 'filepath', current_output_folder); I get this warning

Warning: ICA activities and weights mismatch, click on the link below for more information https://eeglab.org/others/TIPS_and_FAQ.html#ica-activity-warning Saving dataset...

So there is something in the pop_tesa_fastica function that creates some inconsistencies between activations and weights.

It seems to be fixed by adding

EEG.icaact = []; EEG = eeg_checkset(EEG, 'ica');

right after pop_tesa_fastica to force a recomputation of the cached activations

[nigelrogasch]

Thanks Giacomo.

Have you removed any components before saving the data?

Note that EEG.icaact is generated by tesa_fastica (it is the time series weightings). It may be that when components are removed, they are removed from the weights, but not the icaact.

Let me know and I can check further.

[GiacomoBert]

Hi Nigel! Thanks for your reply.

Yes I removed components and in fact if I do not remove components, that warning does not come out.