[Eeglablist] unusual ICs

Isaiah Innis isainnis at umail.iu.edu
Wed May 20 17:59:11 PDT 2015

Hello eeglab list:

After running a 2nd ICA on a dataset we sometimes run into into strange ICs
in the first few positions, usually ICs 1-5.

Here is an example (images of IC1-4 for a single subject):


It looks like it might be the same thing in the "How to deal with
'corrupted' ICA decompositions section on the wiki but I don't know for
sure. We do normally reduce our 64ch recordings to 32ICs using the 'pca'

Does anyone have any experience with this? Is something wrong with our

Thank you,

Isaiah Innis
Indiana University '13
EEG Technician, IUB IRF
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