In witnessing the brain's 'aha!' moment, scientists shed light on biology of consciousness Scientists have identified the brain's 'aha!' moment -- that flash in time when you suddenly know the answer to a difficult question. Today's findings in humans, combined with previous research, provide compelling evidence that this moment -- this feeling of having decided -- pierces consciousness when information being collected by the brain reaches a critical level. Importantly, this study offers new hope that the biological foundations of consciousness may well be within our grasp. July 27, 2017