Implicit motor learning from target error during explicit reach control.
Many studies have shown adapted reaching in the face of altered visual feedback. These studies typically involve iterative corrections to the error induced by the perturbation until relatively normal performance is achieved. Here, we investigate whether adaptation (indexed by aftereffects) can occur when direct corrections to a target are inhibited by giving participants an explicit reach task. During the exposure phase of our study, participants were instructed to undershoot a target that imperceptibly moved between movement onset and movement end. The size of the target displacement was gradually increased, while the instructed undershoot distance was equivalently increased, such that participants were, unknowingly, aiming to the same location throughout exposure. When participants were subsequently instructed to aim at the target during the post-test, they overshot the target, suggesting that adaptation had occurred in the presence of an explicit task and in the absence of direct corrections to the target perturbation.
Cameron
Brendan D
BD
School of Human Kinetics, University of British Columbia, 6081 University Blvd., Vancouver, BC, V6T 1Z1, Canada.
Franks
Ian M
IM
Inglis
J Timothy
JT
Chua
Romeo
R
D000222:Adaptation, Physiological / Q000502:physiology*; D000293:Adolescent; D000328:Adult; D001364:Awareness / Q000502:physiology; D004585:Electrooculography / Q000379:methods; D005260:Female; D006801:Humans; D007858:Learning / Q000502:physiology*; D008297:Male; D009068:Movement / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology; D055815:Young Adult
J Cogn Neurosci. 2007 Feb;19(2):341-50
17280521
J Mot Behav. 2002 Jun;34(2):126-38
12057886
Vision Res. 2000;40(20):2779-96
10960651
J Cogn Neurosci. 2006 Jan;18(1):75-83
16417684
Exp Brain Res. 2009 Mar;193(3):337-50
19011846
Neuroreport. 2007 Aug 6;18(12):1207-13
17632269
J Neurosci. 2006 Apr 5;26(14):3642-5
16597717
Exp Brain Res. 2002 Jun;144(4):445-57
12037630
J Neurophysiol. 2009 Feb;101(2):655-64
19019979
J Exp Psychol Hum Percept Perform. 1996 Apr;22(2):379-94
8934851
Exp Brain Res. 2010 Jun;203(2):367-80
20383763
Neurosci Biobehav Rev. 2005 May;29(3):431-44
15820548
Exp Brain Res. 1989;78(3):575-87
2612600