Biological variability and control of movements via δλ

Charles E. Wright; Rebecca A. States

doi:10.1017/S0140525X00041078

Biological variability and control of movements via δλ

Published online by Cambridge University Press: 04 February 2010

Charles E. Wright and

Rebecca A. States

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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.

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Type: Open Peer Commentary
Information: Behavioral and Brain Sciences , Volume 18 , Issue 4 , December 1995, pp. 786
DOI: https://doi.org/10.1017/S0140525X00041078 [Opens in a new window]
Copyright: Copyright © Cambridge University Press 1995

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Biological variability and control of movements via δλ

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