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000022233 0247_ $$2DOI$$a10.1016/j.neuroscience.2012.03.015
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000022233 084__ $$2WoS$$aNeurosciences
000022233 1001_ $$0P:(DE-HGF)0$$aBensmail, D.$$b0
000022233 245__ $$aArbitrary visuomotor mapping in the grip-lift task: Dissociation of performance deficits in right and left middle cerebral artery stroke
000022233 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2012
000022233 300__ $$a128 - 136
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000022233 440_0 $$04579$$aNeuroscience$$v210$$x0306-4522
000022233 500__ $$aThis study was supported by a grant of the Deutsche Forschungsgemeinschaft (no 73715-1). Djamel Bensmail was supported by grants of Fondation Garches, SOFMER-IPSEN, Assistance Publique-Hopitaux de Paris, Allergan, and Medtronic.
000022233 520__ $$aThe ability to rapidly establish a memory link between arbitrary sensory cues and goal-directed movements is part of our daily motor repertoire. It is unknown if this ability is affected by middle cerebral artery stroke. Eighteen right-handed subjects with a first unilateral middle cerebral artery stroke were studied while performing a precision grip to lift objects of different weights. In a "no cue" condition, a noninformative neutral visual stimulus was presented before each lift, thereby not allowing any judgment about the object weight. In a "cue" condition arbitrary color cues provided advance information about the weight to be lifted in the subsequent trial. Subjects performed both conditions with either hand. During "no cue" trials subjects scaled their grip force according to the weight of the preceding lift, irrespective of the hand performing the lift or the hemisphere affected. The presentation of color cues allowed patients with right hemispheric stroke, but not those with left hemispheric stroke, to scale their grip force according to the weight in the upcoming lift when lifting the weight with the unaffected hand. Color cues did not allow for a predictive scaling of grip force according to the weight of the object to be lifted when lifting with the affected hand, irrespective of the affected hemisphere. These data imply that the ability of visuomotor mapping in the grip-lift task is selectively impaired in the affected hand after right middle cerebral artery stroke, but in both hands after left middle cerebral artery stroke.
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000022233 65320 $$2Author$$agrip force
000022233 65320 $$2Author$$aconditional motor learning
000022233 65320 $$2Author$$asensorimotor integration
000022233 650_2 $$2MeSH$$aAdult
000022233 650_2 $$2MeSH$$aAged
000022233 650_2 $$2MeSH$$aAged, 80 and over
000022233 650_2 $$2MeSH$$aBrain: physiopathology
000022233 650_2 $$2MeSH$$aCues
000022233 650_2 $$2MeSH$$aFemale
000022233 650_2 $$2MeSH$$aFunctional Laterality: physiology
000022233 650_2 $$2MeSH$$aHand Strength: physiology
000022233 650_2 $$2MeSH$$aHumans
000022233 650_2 $$2MeSH$$aInfarction, Middle Cerebral Artery: complications
000022233 650_2 $$2MeSH$$aInfarction, Middle Cerebral Artery: physiopathology
000022233 650_2 $$2MeSH$$aMale
000022233 650_2 $$2MeSH$$aMiddle Aged
000022233 650_2 $$2MeSH$$aPsychomotor Performance: physiology
000022233 650_2 $$2MeSH$$aWeight Perception: physiology
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000022233 7001_ $$0P:(DE-HGF)0$$aSarfeld, A.S.$$b1
000022233 7001_ $$0P:(DE-HGF)0$$aAmeli, M.$$b2
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000022233 7001_ $$0P:(DE-HGF)0$$aNowak, D.A.$$b4
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