The Multiple Process Model of Goal-Directed Reaching Revisited

Elliott, Digby and Lyons, James L. and Hayes, Spencer J. and Burkitt, James J. and Roberts, James W. and Grierson, Lawrence E.M. and Hansen, Steve and Bennett, Simon J. (2017) The Multiple Process Model of Goal-Directed Reaching Revisited. Neuroscience & Biobehavioral Reviews, 72. pp. 95-110. ISSN 0149-7634

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Recently our group forwarded a model of speed-accuracy relations in goal-directed reaching. A fundamental feature of our multiple process model was the distinction between two types of online regulation: impulse control and limb-target control. Impulse control begins during the initial stages of the movement trajectory and involves a comparison of actual limb velocity and direction to an internal representation of expectations about the limb trajectory. Limb-target control involves discrete error-reduction based on the relative positions of the limb and the target late in the movement. Our model also considers the role of eye movements, practice, energy optimization and strategic behavior in limb control. Here, we review recent work conducted to test specific aspects of our model. As well, we consider research not fully incorporated into our earlier contribution. We conclude that a slightly modified and expanded version of our model, that includes crosstalk between the two forms of online regulation, does an excellent job of explaining speed, accuracy, and energy optimization in goal-directed reaching.

Item Type: Article
Additional Information and Comments: NOTICE: this is the author’s version of a work that was accepted for publication in Neuroscience and Behavioral Raviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Neuroscience and Behavioral Reviews, Vol 72, January 2017,
Keywords: speed-accuracy, aiming/reaching, visual feedback, movement planning, limb trajectories
Faculty / Department: Faculty of Science > School of Health Sciences
Depositing User: James Roberts
Date Deposited: 21 Jun 2017 13:39
Last Modified: 25 May 2018 00:15

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