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The unobservability of central commands: Why testing hypotheses is so difficult

Published online by Cambridge University Press:  04 February 2010

Antony Hodgson
Antony Hodgson
Affiliation:
Laboratory for Biomechanics and Human Rehabilitation, Division of Health Sciences and Technology, Harvard University–Massachusetts Institute of Technology, Cambridge, MA 02139. ahodgson@hstbme.mit.edu
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Abstract

The experiments Feldman and Levin suggest do not definitively test their proposed solution to the problem of selecting muscle activations. Their test of the movement directions that elicit EMG activity can be interpreted without regard to the form of the central commands, and their fast elbow flexion test is based on a forward computation that obscures the insensitivity of the predicted trajectory to the details of the putative commands.

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Open Peer Commentary
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Behavioral and Brain Sciences , Volume 18 , Issue 4 , December 1995 , pp. 763 - 764
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Copyright © Cambridge University Press 1995

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