Emg-torque dynamic relationships are different for central and stretch reflex contributions to human postural control

We developed a novel, multiple-input single-output, closed-loop, parametric identification method to quantify the EMG-torque relations for central controller and stretch reflex contributions to human postural control. Our results demonstrated that the relation for the reflex pathway has higher bandwidth and lower gain than that for the central controller. These difference must be accounted for when assessing central and reflex mechanisms contributions to human postural control.