title: Both movement-end and task-end are critical for error feedback in visuomotor adaptation: a behavioral experiment.
abstract: An important issue in motor learning/adaptation research is how the brain accepts the error information necessary for maintaining and improving task performance in a changing environment. The present study focuses on the effect of timing of error feedback. Previous research has demonstrated that adaptation to displacement of the visual field by prisms in a manual reaching task is significantly slowed by delayed visual feedback of the endpoint, suggesting that error feedback is most effective when given at the end of a movement. To further elucidate the brain mechanism by which error information is accepted in visuomotor adaptation, we tested whether error acceptance is linked to the end of a given task or to the end of an executed movement. We conducted a behavioral experiment using a virtual shooting task in which subjects controlled their wrist movements to meet a target with a cursor as accurately as possible. We manipulated the timing of visual feedback of the impact position so that it occurred either ahead of or behind the true time of impact. In another condition, the impact timing was explicitly indicated by an additional cue. The magnitude of the aftereffect significantly varied depending on the timing of feedback (p < 0.05, Friedman's Test). Interestingly, two distinct peaks of aftereffect were observed around movement-end and around task-end, irrespective of the existence of the timing cue. However, the peak around task-end was sharper when the timing cue was given. Our results demonstrate that the brain efficiently accepts error information at both movement-end and task-end, suggesting that two different learning mechanisms may underlie visuomotor transformation.
authors: Department of Information Media Systems, University of Electro-Communications, Tokyo, Japan. g.burafuma@gmail.com
authors: Takumi
authors: T
authors: Ishikawa
authors: Yutaka
authors: Y
authors: Sakaguchi
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology; D000293:Adolescent; D000328:Adult; D056228:Feedback, Sensory / Q000502:physiology; D005260:Female; D006801:Humans; D007858:Learning / Q000502:physiology; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D055815:Young Adult
references: Neuropsychologia. 2006;44(13):2757-65
references: 16504222
references: Learn Mem. 1999 Jan-Feb;6(1):47-53
references: 10355523
references: Trends Cogn Sci. 2000 Nov 1;4(11):423-431
references: 11058820
references: Neurobiol Learn Mem. 1998 Jul-Sep;70(1-2):177-88
references: 9753595
references: J Neurosci. 2006 Apr 5;26(14):3642-5
references: 16597717
references: J Neurosci. 1997 Feb 15;17(4):1481-92
references: 9006989
references: Exp Brain Res. 2002 May;144(2):258-61
references: 12012163
references: J Neurosci. 1995 Nov;15(11):7644-52
references: 7472515
references: J Mot Behav. 1993 Sep;25(3):203-16
references: 12581990
references: J Neurosci. 1997 Jul 15;17(14):5528-35
references: 9204934
references: PLoS One. 2012;7(5):e37900
references: 22666408
references: Annu Rev Neurosci. 2010;33:89-108
references: 20367317
references: J Neurophysiol. 2010 Apr;103(4):1888-95
references: 20130036
references: Neuropsychologia. 2007 Sep 20;45(12):2692-8
references: 17507059
references: J Neurophysiol. 1999 Apr;81(4):1960-5
references: 10200230
references: J Exp Psychol Hum Percept Perform. 1995 Aug;21(4):719-33
references: 7643045
references: Learn Mem. 1995 May-Aug;2(3-4):185-98
references: 10467575
references: Science. 1995 Sep 29;269(5232):1880-2
references: 7569931
references: Brain Res Cogn Brain Res. 2004 Jun;20(1):92-7
references: 15130593
references: J Neurosci. 2009 Oct 14;29(41):12930-9
references: 19828807
references: PLoS Biol. 2007 Nov;5(11):e316
references: 18044990
references: J Physiol. 1982 Mar;324:113-34
references: 7097592
references: Eur J Neurosci. 2003 Aug;18(3):689-94
references: 12911765
references: Exp Brain Res. 2011 Jan;208(2):257-68
references: 21076819
references: J Exp Psychol Hum Percept Perform. 1989 Aug;15(3):507-28
references: 2527959
references: J Neurophysiol. 2011 Mar;105(3):1130-40
references: 21123665
references: Brain. 1996 Aug;119 ( Pt 4):1199-211
references: 8813283
references: Brain. 1996 Aug;119 ( Pt 4):1183-98
references: 8813282
references: Nat Neurosci. 2000 Nov;3 Suppl:1212-7
references: 11127840
references: J Neurosci. 2006 Feb 15;26(7):1986-90
references: 16481431
references: Exp Brain Res. 2001 Nov;141(2):250-3
references: 11713636
references: Ann N Y Acad Sci. 2002 Dec;978:302-17
references: 12582062
references: Neural Netw. 1999 Oct;12(7-8):961-974
references: 12662639
references: J Neurophysiol. 2007 Jul;98(1):54-62
references: 17507504