I have already found the answer in the eeglablist (2006) http://sccn.ucsd.edu/pipermail/eeglablist/2006/001377.html. Sorry for inattentiveness. Olga P. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20120322/2aceee75/attachment.html>