Department of Zoology, University of Durham, England
Abstract:
A three-component model of the muscle is used in which the components change their values when the muscle is stimulated. In particular the elastic components change not only their moduli of elasticity but the unstretched lengths decrease when the muscle is in the active state. When the model is extended to the intrafusal muscle fibres of the mammalian muscle spindle it can reproduce some of the observed responses to mechanical stretch and fusimotor stimulation.