Hierarchical error evaluation: the role of medial-frontal cortex in postural control.
Motor error evaluation appears to be a hierarchically organized process subserved by 2 distinct systems: a higher level system within medial-frontal cortex responsible for movement outcome evaluation (high-level error evaluation) and a lower level posterior system(s) responsible for the mediation of within-movement errors (low-level error evaluation). While a growing body of evidence suggests that a reinforcement learning system within medial-frontal cortex plays a crucial role in the evaluation of high-level errors made during discrete reaching movements and continuous motor tracking, the role of this system in postural control is currently unclear. Participants learned a postural control task via a feedback-driven trial-and-error shaping process. In line with previous findings, electroencephalographic recordings revealed that feedback about movement outcomes elicited a feedback error-related negativity: a component of the human event-related brain potential associated with high-level outcome evaluation within medial-frontal cortex. Thus, the data provide evidence that a high-level error-evaluation system within medial-frontal cortex plays a key role in learning to control our body posture.
['Hassall|Cameron D|CD|', 'MacLean|Stephane|S|', 'Krigolson|Olave E|OE|']
D000293:Adolescent D000328:Adult D005071:Evoked Potentials D056228:Feedback, Sensory D005260:Female D005625:Frontal Lobe D006801:Humans D008297:Male D009068:Movement D004856:Postural Balance D011597:Psychomotor Performance D055815:Young Adult
posture outcome evaluation reinforcement learning ERP balance fERN