[Eeglablist] question about ica decomposition of ictal iEEG signal to compute component topography

[Anne-Cecile Lesage]

Dear eeglab team

I ran ica decomposition of ictal iEEG signal to compute component
topography. The patient is public data.

More details are in the attached file (patient data set, channel
localization, ictal plots).
I ran the ica as in the attached screen capture.
The ICA plots do not look bad but the matrices do not make sense.
I am supposed to retrieve the unmixing matrix by multiplying icaweights by
icasphere, isn't it?
The ictal data is common average referenced. Do you recommend it or shall i
use the raw data before referencing?

Thank you
Regards

-- 
Anne-Cécile Lesage, PhD
Research Scientist
Department of neurosurgery
University of Texas Medical Branch
anlesage at utmb.edu