Comparison of different cortical connectivity estimators for high-resolution EEG recording - Astolfi, Laura; Cincotti, Febo; Mattia, Donatella; Marciani, M. Grazia; Baccalá, Luiz Antonio; Fallani, Fabrizio de Vico; Salinari, Serenella; Ursino, Mauro; Zavaglia, Melissa; Ding, Lei; Edgar, J. Christofer (Human Brain Mapping, 2007)