[Eeglablist] Polarity after ICA

[Stefano Seri]

We are using fastICA to extract sources of somatosensory EPs and use the
Dipfit2 function in EEGLab to localise the extracted sources.

We import data and the ICA weight matrix using File->Import Data.

Given that ICA weight matrix has undetermined polarity (sign), how does
dipfit2 in EEGLAB handle the estimation of the orientation of the extracted
dipolar source in this particular context ?


Any help ?
Thanks

Stefano Seri