Fast corrective responses are evoked by perturbations approaching the natural variability of posture and movement tasks

Journal of Neurophysiology
F CrevecoeurStephen H Scott

Abstract

A wealth of studies highlight the importance of rapid corrective responses during voluntary motor tasks. These studies used relatively large perturbations to evoke robust muscle activity. Thus it remains unknown whether these corrective responses (latency 20-100 ms) are evoked at perturbation levels approaching the inherent variability of voluntary control. To fill this gap, we examined responses for large to small perturbations applied while participants either performed postural or reaching tasks. To address multijoint corrective responses, we induced various amounts of single-joint elbow motion with scaled amounts of combined elbow and shoulder torques. Indeed, such perturbations are known to elicit a response at the unstretched shoulder muscle, which reflects an internal model of arm intersegmental dynamics. Significant muscle responses were observed during both postural control and reaching, even when perturbation-related joint angle, velocity, and acceleration overlapped in distribution with deviations encountered in unperturbed trials. The response onsets were consistent across the explored range of perturbation loads, with short-latency onset for the muscles spanning the elbow joints (20-40 ms), and long-latency for sho...Continue Reading

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Citations

Aug 24, 2013·PLoS Computational Biology·Frédéric Crevecoeur, Stephen H Scott
Jun 28, 2013·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Michael DimitriouDavid W Franklin
Oct 4, 2012·Trends in Cognitive Sciences·Stephen H Scott
Apr 2, 2015·Current Opinion in Neurobiology·Stephen H ScottTomohiko Takei
Jul 12, 2014·Vision Research·Tyler CluffStephen H Scott
Feb 18, 2015·Frontiers in Integrative Neuroscience·Isaac L Kurtzer
Sep 15, 2016·Frontiers in Human Neuroscience·Stefania SozziMarco Schieppati
Aug 23, 2018·Journal of Neurophysiology·Frederic Crevecoeur, Isaac Kurtzer
Jan 30, 2019·Sports Biomechanics·Ana Paula Silva AzevedoJúlio Cerca Serrão
May 25, 2012·Journal of Neurophysiology·Joseph Y NashedStephen H Scott
Jan 31, 2014·Journal of Neurophysiology·Isaac KurtzerStephen H Scott
Oct 9, 2015·Journal of Neurophysiology·Jeffrey WeilerJ Andrew Pruszynski
Oct 3, 2014·Journal of Neurophysiology·Joseph Y NashedStephen H Scott
Aug 10, 2018·Nature Reviews. Neuroscience·Jason P GallivanJ Randall Flanagan
Jul 5, 2013·Journal of Neurophysiology·F CrevecoeurS H Scott
May 5, 2017·Journal of Neurophysiology·F CrevecoeurP Lefèvre
Nov 10, 2017·Journal of Neurophysiology·Jeffrey WeilerJ Andrew Pruszynski
Nov 3, 2016·Journal of Neurophysiology·Jeffrey WeilerJ Andrew Pruszynski
Jan 30, 2019·Journal of Neuroengineering and Rehabilitation·Catherine R LowreyStephen H Scott
Nov 23, 2020·The European Journal of Neuroscience·Rodrigo S MaedaJ Andrew Pruszynski
Apr 15, 2021·Journal of Neurophysiology·Antoine De ComitePhilippe Lefèvre
Jul 25, 2021·Neuroscience·Sophia V PoscenteTyler Cluff
Sep 23, 2020·Current Biology : CB·Sasha Reschechtko, J Andrew Pruszynski
Nov 4, 2021·ELife·Hari Teja KalidindiStephen H Scott

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