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Biological variability and control of movements via δλ

Published online by Cambridge University Press:  04 February 2010

Charles E. Wright  and
Rebecca A. States
Charles E. Wright
Affiliation:
Department of Cognitive Sciences, University of California at Irvine, Irvine, CA 92717. cewright@uci.edu
Rebecca A. States
Affiliation:
Department of Health & Kinesiology, Texas A & M University, College Station, TX 77843. states@tam2000.tamu.edu
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Abstract

Three issues related to Feldman and Levin's treatment of biological variability are discussed. We question the usefulness of the indirect component of δλ. We suggest that trade-offs between speed and accuracy in aimed movements support identification of δλ, rather than λ, as a control variable. We take issue with the authors' proposal for resolving redundancy in multi-joint movements, given recent data.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 18 , Issue 4 , December 1995 , pp. 786
Copyright
Copyright © Cambridge University Press 1995

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