Dear Colleagues, I have an issue with EEGLAB, some ERP set have 400 pnts and other 410. I am not then able to run the Grand Average. Is there a way to fix this issue? Thanks!! Mirella Mirella Manfredi, Prof. Dr. Universität Zürich Department of Child and Adolescent Psychiatry Eisengasse, 16 8008 Zürich Email: mirella.manfredi at uzh.ch