Effect of trial order and error magnitude on motor learning by observing.

Journal of Neurophysiology
Liana E BrownPaul L Gribble

Abstract

Watching an actor make reaching movements in a perturbing force field provides the observer with information about how to compensate for that force field. Here we asked two questions about the nature of information provided to the observer. Is it important that the observer learn the difference between errant (curved) movements and goal (straight) movements by watching the actor progress in a relatively orderly fashion from highly curved to straight movements over a series of trials? Or is it sufficient that the observer sees only reaching errors in the force field (FF)? In the first experiment, we found that observers performed better if they observed reaches in a FF that was congruent, rather than incongruent, with the FF used in a later test. Observation-trial order had no effect on performance, suggesting that observers understood the goal in advance and perhaps learned about the force-field by observing movement curvature. Next we asked whether observers learn optimally by observing the actor's mistakes (high-error trials), if they learn by watching the actor perform with expertise in the FF (low-error trials), or if they need to see contrast between errant and goal behavior (a mixture of both high- and low-error trials). ...Continue Reading

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Citations

May 18, 2013·Experimental Brain Research·Andreas F ReicheltJ Randall Flanagan
Jun 12, 2013·Experimental Brain Research·Mathieu Andrieux, Luc Proteau
Sep 14, 2012·Journal of Neurophysiology·Jeremy D WongPaul L Gribble
Sep 16, 2011·Journal of Neurophysiology·Jordan A TaylorRichard B Ivry
Jun 6, 2014·Experimental Brain Research·Mathieu Andrieux, Luc Proteau
Mar 15, 2016·Current Biology : CB·Heather R McGregorPaul L Gribble
Aug 21, 2013·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Gavin BuckinghamMelvyn A Goodale
Sep 28, 2018·The British Journal of Surgery·D J HarrisG Buckingham
Dec 23, 2011·Journal of Neurophysiology·Alexandra Williams, Paul L Gribble
Jul 19, 2013·Journal of Neurophysiology·Nicolò F BernardiDavid J Ostry
May 29, 2018·ELife·Tsuyoshi IkegamiHiroki Nakamoto
Jun 14, 2013·Journal of Neurophysiology·Paul A WandaKurt A Thoroughman

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