... differences between controls and patients and less interaction with disease grade (AS). For the triceps surae reflex torque, the opposite would occur: differences between controls and patients, and in between ... ()=++0222002(A14) and similarly for the tibialis anterior, where atri the active state of the triceps surae, ω0= 2π f0 the cutofffrequency of the activation filter, and s the Laplaceoperator denoting the ... nonlinear relationship. Difference between controls and patients Stiffness, viscosity and reflexive torque from the tricepssurae significantly differed between controls and the stroke patients with...