Brain Cell Mechanism For Decision Making Also Underlies Judgment About Certainty

ScienceDaily.com
The results of this study, according to the authors, advance the understanding of brain cell mechanisms that underlie decision making by coupling for the first time the mechanisms that lead to decision formation and the establishment of a degree of confidence in that decision.

"Our findings suggest that when the brain embraces truth, it does so in a graded way so that even a binary [yes/no, true/false, left/right] choice leaves in its wake a quantity that represents a degree of belief. The neural mechanism of decision making doesn't flip into a fixed point, but instead approximates a probability distribution."