Manual asymmetries in the preparation and control of goal-directed movements

Mieschke, Paul E., Elliott, Digby, Helsen, Werner F., Carson, Richard G. and Coull, Jamie A. (2001) Manual asymmetries in the preparation and control of goal-directed movements. Brain And Cognition, 45 1: 129-140. doi:10.1006/brcg.2000.1262

Author Mieschke, Paul E.
Elliott, Digby
Helsen, Werner F.
Carson, Richard G.
Coull, Jamie A.
Title Manual asymmetries in the preparation and control of goal-directed movements
Journal name Brain And Cognition   Check publisher's open access policy
ISSN 0278-2626
Publication date 2001-02-01
Sub-type Article (original research)
DOI 10.1006/brcg.2000.1262
Open Access Status Not yet assessed
Volume 45
Issue 1
Start page 129
End page 140
Total pages 12
Editor H.A. Whitaker
Place of publication New York, N.Y. U.S.A.
Publisher Academic Press
Language eng
Subject C1
321403 Motor Control
730104 Nervous system and disorders
Abstract The primary purpose of this experiment was to determine if left hand reaction time advantages in manual aiming result from a right hemisphere attentional advantage or an early right hemisphere role in movement preparation. Right-handed participants were required to either make rapid goal-directed movements to small targets or simply lift their hand upon target illumination. The amount of advance information about the target for a particular trial was manipulated by precuing a subset of potential targets prior to the reaction time interval. When participants were required to make aiming movements to targets in left space, the left hand enjoyed a reaction advantage that was not present for aiming in right space: or simple finger lifts. This advantage was independent of the amount or type of advance information provided by the precue. This finding supports the movement planning hypothesis. With respect to movement execution, participants completed their aiming movements more quickly when aiming with their right hand, particularly in right space. This right hand advantage in right space was due to the time required to decelerate the movement and to make feedback-based adjustments late in the movement trajectory. (C) 2001 Academic Press.
Keyword Neurosciences
Psychology, Experimental
Posterior Parietal Cortex
Aiming Movements
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Human Movement and Nutrition Sciences Publications
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Created: Wed, 15 Aug 2007, 01:45:44 EST