1. A method of identifying selective motor control associated with motion of a human subject, the method comprising: detecting, by a computing device, at least a portion of the motion associated with the human subject; analyzing, by a computing device, a step response associated with the detected motion to determine a peak time, the peak time being a time in which a magnitude of the step response reaches a peak; estimating, by the computing device, an overshoot magnitude, the overshoot magnitude being the difference of the magnitude of the step response at the peak time and a target magnitude of the step response; and classifying, by the computing device, the motion as either a precise selection or as a broad selection based, at least in part, on the overshoot magnitude.