title: Somatosensory plasticity and motor learning.
abstract: Motor learning is dependent upon plasticity in motor areas of the brain, but does it occur in isolation, or does it also result in changes to sensory systems? We examined changes to somatosensory function that occur in conjunction with motor learning. We found that even after periods of training as brief as 10 min, sensed limb position was altered and the perceptual change persisted for 24 h. The perceptual change was reflected in subsequent movements; limb movements following learning deviated from the prelearning trajectory by an amount that was not different in magnitude and in the same direction as the perceptual shift. Crucially, the perceptual change was dependent upon motor learning. When the limb was displaced passively such that subjects experienced similar kinematics but without learning, no sensory change was observed. The findings indicate that motor learning affects not only motor areas of the brain but changes sensory function as well.
authors.affiliation: McGill University, Montréal, Québec H3A 1B1, Canada. ostry@motion.psych.mcgill.ca
authors.forename: David J
authors.initials: DJ
authors.lastname: Ostry
authors.forename: Mohammad
authors.initials: M
authors.lastname: Darainy
authors.forename: Andrew A G
authors.initials: AA
authors.lastname: Mattar
authors.forename: Jeremy
authors.initials: J
authors.lastname: Wong
authors.forename: Paul L
authors.initials: PL
authors.lastname: Gribble
mesh_terms: D000223:Adaptation, Psychological; D000704:Analysis of Variance; D001132:Arm; D001696:Biomechanical Phenomena; D006801:Humans; D007858:Learning; D009043:Motor Activity; D009068:Movement; D009473:Neuronal Plasticity; D009483:Neuropsychological Tests; D011434:Proprioception; D013997:Time Factors
references.citation: J Neurophysiol. 1994 Nov;72(5):2280-301
references.pmid: 7884459
references.citation: Exp Brain Res. 1992;91(2):207-28
references.pmid: 1459224
references.citation: J Neurophysiol. 1992 May;67(5):1057-70
references.pmid: 1597697
references.citation: Neuroscientist. 2004 Feb;10(1):73-82
references.pmid: 14987450
references.citation: J Cogn Neurosci. 2006 Dec;18(12):2167-76
references.pmid: 17129198
references.citation: Proc Natl Acad Sci U S A. 2009 Feb 3;106(5):1590-5
references.pmid: 19164589
references.citation: J Comp Neurol. 1978 Sep 15;181(2):291-347
references.pmid: 99458
references.citation: J Neurophysiol. 2007 Nov;98(5):2827-41
references.pmid: 17728389
references.citation: J Neurophysiol. 1990 Jan;63(1):82-104
references.pmid: 2299388
references.citation: Curr Biol. 2002 May 14;12(10):834-7
references.pmid: 12015120
references.citation: Neural Netw. 1998 Oct;11(7-8):1317-29
references.pmid: 12662752
references.citation: J Neurophysiol. 1992 May;67(5):1031-56
references.pmid: 1597696
references.citation: J Neurophysiol. 2009 Dec;102(6):3505-18
references.pmid: 19828727
references.citation: J Neurosci. 2007 Sep 12;27(37):9975-83
references.pmid: 17855611
references.citation: Nat Rev Neurosci. 2003 Mar;4(3):203-18
references.pmid: 12612633
references.citation: J Physiol. 2006 Mar 15;571(Pt 3):703-10
references.pmid: 16439427
references.citation: Cereb Cortex. 1999 Apr-May;9(3):264-76
references.pmid: 10355907
references.citation: J Neurophysiol. 2000 Aug;84(2):853-62
references.pmid: 10938312
references.citation: J Neurophysiol. 1994 Jan;71(1):161-72
references.pmid: 8158225
references.citation: Nature. 2004 Jan 15;427(6971):244-7
references.pmid: 14724638
references.citation: J Neurophysiol. 2008 Jan;99(1):231-43
references.pmid: 17977930
references.citation: J Neurophysiol. 1994 Jan;71(1):173-81
references.pmid: 8158227
references.citation: Exp Brain Res. 2009 Mar;194(1):39-58
references.pmid: 19082821
references.citation: Exp Brain Res. 2000 Dec;135(4):474-82
references.pmid: 11156311
references.citation: J Neurophysiol. 1980 Apr;43(4):1090-110
references.pmid: 6766995
references.citation: J Comp Neurol. 1993 Sep 8;335(2):200-13
references.pmid: 8227514
references.citation: Exp Brain Res. 1991;87(2):319-39
references.pmid: 1769386