A simple rule of thumb for elegant prehension

Mon-Williams, M. and Tresilian, J. R. (2001) A simple rule of thumb for elegant prehension. Current Biology, 11 13: 1058-1061. doi:10.1016/S0960-9822(01)00293-7


Author Mon-Williams, M.
Tresilian, J. R.
Title A simple rule of thumb for elegant prehension
Journal name Current Biology   Check publisher's open access policy
ISSN 0960-9822
Publication date 2001-07-10
Sub-type Article (original research)
DOI 10.1016/S0960-9822(01)00293-7
Volume 11
Issue 13
Start page 1058
End page 1061
Total pages 4
Editor G. North
Place of publication London
Publisher Elsevier
Collection year 2001
Language eng
Subject C1
321403 Motor Control
780108 Behavioural and cognitive sciences
Abstract Reaching out to grasp an object (prehension) is a deceptively elegant and skilled behavior. The movement prior to object contact can be described as having two components [1], the movement of the hand to an appropriate location for gripping the object, the transport component, and the opening and closing of the aperture between the fingers as they prepare to grip the target, the grasp component. The grasp component is sensitive to the size of the object, so that a larger grasp aperture is formed for wider objects [1]; the maximum grasp aperture (MGA) is a little wider than the width of the target object and occurs later in the movement for larger objects [1, 2]. We present a simple model that can account for the temporal relationship between the transport and grasp components, We report the results of an experiment providing empirical support for our rule of thumb. The model provides a simple, but plausible, account of a neural control strategy that has been the center of debate over the last two decades.
Keyword Biochemistry & Molecular Biology
Visual Information
Natural Prehension
Movements
Grasp
Transport
Coordination
Components
Accuracy
Reach
Size
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Human Movement Studies Publications
 
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Created: Tue, 14 Aug 2007, 16:57:40 EST