Fig. 2From: The Arm Movement Detection (AMD) test: a fast robotic test of proprioceptive acuity in the armEvolution of hand forces during a typical descending trial, as performed by a neurologically intact control participant. a Force magnitude as a function of time for a single trial. b and c A comparison of hand forces and motions from the initial (red) and later (grey) parts of the trial. The thin black circular line represents a scale of 1Â N or 1Â cm (respectively) for each traceBack to article page