@article {203,
	title = {Gamma band activity and the P3 reflect post-perceptual processes, not visual awareness.},
	journal = {Neuroimage},
	volume = {101},
	year = {2014},
	month = {2014 Nov 1},
	pages = {337-50},
	abstract = {<p>A primary goal in cognitive neuroscience is to identify neural correlates of conscious perception (NCC). By contrasting conditions in which subjects are aware versus unaware of identical visual stimuli, a number of candidate NCCs have emerged; among them are induced gamma band activity in the EEG and the P3 event-related potential. In most previous studies, however, the critical stimuli were always directly relevant to the subjects{\textquoteright} task, such that aware versus unaware contrasts may well have included differences in post-perceptual processing in addition to differences in conscious perception per se. Here, in a series of EEG experiments, visual awareness and task relevance were manipulated independently. Induced gamma activity and the P3 were absent for task-irrelevant stimuli regardless of whether subjects were aware of such stimuli. For task-relevant stimuli, gamma and the P3 were robust and dissociable, indicating that each reflects distinct post-perceptual processes necessary for carrying-out the task but not for consciously perceiving the stimuli. Overall, this pattern of results challenges a number of previous proposals linking gamma band activity and the P3 to conscious perception.</p>
},
	keywords = {Adult, Attention, Awareness, Consciousness, Electroencephalography, Event-Related Potentials, P300, Female, Gamma Rhythm, Humans, Male, Psychomotor Performance, Visual Perception, Young Adult},
	issn = {1095-9572},
	doi = {10.1016/j.neuroimage.2014.07.024},
	author = {Pitts, Michael A and Padwal, Jennifer and Fennelly, Daniel and Mart{\'\i}nez, Ant{\'\i}gona and Hillyard, Steven A}
}
