@ARTICLE{NolBaiWeaMarVorHal04, author = "Nolte, G. and Bai, O. and Wheaton, L. and Mari, Z. and Vorbach, S. and Hallett, M.", title = "Identifying true brain interaction from {EEG} data using the imaginary part of coherency", journal = "Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology", year = "2004", volume = "115", pages = "2292--2307" }