The spectral exponent of the resting EEG indexes the presence of consciousness during unresponsiveness induced by propofol, xenon, and ketamine. - Michele Angelo Colombo; Martino Napolitani; Mélanie Boly; Olivia Gosseries; Silvia Casarotto; Mario Rosanova; Jean-François Brichant; Pierre Boveroux; Steffen Rex; Steven Laureys; Marcello Massimini; Arturo Chieregato; et al. (NeuroImage, 2019)