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Is λ an appropriate control variable for locomotion?

Published online by Cambridge University Press:  04 February 2010

Thomas M. Hamm
Affiliation:
Division of Neurobiology, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ 85013. thamm@mha.chw.edu
Zong-Sheng Han
Affiliation:
Division of Neurobiology, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ 85013. thamm@mha.chw.edu

Abstract

The lambda model predicts that the command received by each motor nucleus during locomotion is specific for the joint at which its muscle acts and is independent of external conditions. However, investigation of the commands received by motor nuclei during fictive locomotion and of the sensitivity of these commands to feedback from the limb during locomotion indicates that neither condition is satisfied.

Information

Type
Open Peer Commentary
Copyright
Copyright © Cambridge University Press 1995

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