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[043] Citation: B. Hannaford, 'A Non-linear Model of the Phasic Dynamics of Muscle Activation,'
IEEE Trans. Biomedical Engineering, vol. 37, pp. 1067-1075, 1990.
Abstract
This paper presents a phasic excitation-activation (PEXA) model of the
process of motoneuron excitation and the resultant activation and force
development of a motor unit. The model input is an amount of depolarizing
current (as when injected with an intracellular electrode) and the model
output is muscle force. The model includes dynamics and nonlinearities
similar to phenomena discovered experimentally by others; the firing rate
response of motoneurons to steps of depolarizing current and the "catch-like
enchancement" of force produced by overlapping motor neuron action
potentials. The parameter values used in this model are derived from
experimentally measured data and expressed in physical units, and model
predictions extend to published data beyond those used in generating the
model parameter values.
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Updated: Tue Jul 15 23:54:48 2008
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