Sensorimotor learning in response to errors in task performance

Show simple item record Sadaphal, Dhwani P. Kumar, Adarsh Mutha, Pratik K.
dc.coverage.spatial United States of America 2022-02-11T08:02:48Z 2022-02-11T08:02:48Z 2022-03
dc.identifier.citation Sadaphal, Dhwani P.; Kumar, Adarsh and Mutha, Pratik K., “Sensorimotor learning in response to errors in task performance”, eNeuro, DOI: 10.1523/ENEURO.0371-21.2022, vol. 9, no. 2, Mar. 2022. en_US
dc.identifier.issn 2373-2822
dc.description.abstract The human sensorimotor system is sensitive to both limb-related prediction errors and task-related performance errors. Prediction error signals are believed to drive implicit refinements to motor plans. However, an understanding of the mechanisms that performance errors stimulate has remained unclear largely because their effects have not been probed in isolation from prediction errors. Diverging from past work, we induced performance errors independent of prediction errors by shifting the location of a reach target but keeping the intended and actual kinematic consequences of the motion matched. Our first two experiments revealed that rather than implicit learning, motor adjustments in response to performance errors reflect the use of deliberative, volitional strategies. Our third experiment revealed a potential dissociation of performance-error-driven strategies based on error size. Specifically, behavioral changes following large errors were consistent with goal-directed or model-based control, known to be supported by connections between prefrontal cortex and associative striatum. In contrast, motor changes following smaller performance errors carried signatures of model-free stimulus-response learning, of the kind underpinned by pathways between motor cortical areas and sensorimotor striatum. Across all experiments, we also found remarkably faster re-learning, advocating that such "savings" is associated with retrieval of previously learned strategic error compensation and may not require a history of exposure to limb-related errors.
dc.description.statementofresponsibility by Dhwani P. Sadaphal, Adarsh Kumar and Pratik K. Mutha
dc.format.extent vol. 9, no. 2
dc.language.iso en_US en_US
dc.publisher Society for Neuroscience en_US
dc.subject Goal-directed control en_US
dc.subject Motor learning en_US
dc.subject Performance errors en_US
dc.subject Stimulus-response learning en_US
dc.subject Strategies en_US
dc.title Sensorimotor learning in response to errors in task performance en_US
dc.type Article en_US
dc.relation.journal eNeuro

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