Signatures of Consciousness: A Talk by Stanislas Dehaene

"For the past twelve years", says Dehaene, "my research team has been using every available brain research tool, from functional MRI to electro- and magneto-encephalography and even electrodes inserted deep in the human brain, to shed light on the brain mechanisms of consciousness. I am now happy to report that we have acquired a good working hypothesis. In experiment after experiment, we have seen the same signatures of consciousness: physiological markers that all, simultaneously, show a massive change when a person reports becoming aware of a piece of information (say a word, a digit or a sound). /.../