Topic: sensory surprise

Perception balances what we sense with what we expect. To maintain accuracy, our brains must continuously update sensory expectations when predictions don't match reality. To investigate this, we trained mice on an auditory detection task with hidden switches in stimulus probability across trials. Mice dynamically adjusted their decision thresholds, tracking these changing sound probabilities. We monitored dopamine in the tail of the striatum (TS), a region at the interface of sensory processing and action selection that receives direct auditory cortex inputs. Given mesolimbic dopamine's estab

Sensory surprise leads to cortical phase reset, but it can also drive neurophysiological changes in behavior such as motor inhibition. We tested if attention to auditory deviants leads to phase reset and entrainment of respiratory cycles. We asked 25 healthy young adult participants to detect deviant pure tones embedded within an isochronous roving standard paradigm. Deviant events occurred either after 3, 6 or 9 standard events, defining a hazard rate of event onset, while the magnitude and direction of deviancy were randomized. Results show that respiration entrained not to the stimulation r