Neuroscience Seminar: Precision in metacognition: a global mechanism for perceptual confidence?
Dr. Micah Allen (University College London)
Tuesday, 16 May 2017, 1pm to 2pm
Lecture Theatre, Plant Scienes
Hosted by Matthew Apps
The ability to evaluate the truth of a percept – metacognition – is a core capacity for adaptive decision making. This ability depends in part on our subjective confidence for a given decision, a feeling typically thought to arise from the feed-forward integration of sensory inputs and their reliability. However, confidence is frequently dissociated from decision accuracy, indicating that an additional domain-general mechanism may support metacognition. In this talk, I will present results from a series of quantitative neuroimaging, psychophysiological, and pharmacological experiments, which collectively indicate that perceptual confidence depends in part upon a neuromodulatory, arousal-based mechanism independent of perceptual performance. These results highlight a new view of metacognition as a form of interoceptive inference, in which perceptual awareness depends upon a predictive process integrating both sensory and visceral states.
Host: Matthew Apps