Fig. 9.

EMG amplitude, but not duration, is scaled according to speed of bend propagation. A, Three rectified and smoothed EMG signals (smoothed with a running average of a 100 msec duration) aligned at the peak of the signal.Arrows indicate when the bend point reached electrode location (bend time). B, Bend-point tangential velocity profiles of the corresponding movements, as indicated by line style.Arrows mark the bend times. Note the correspondence of the EMG amplitudes with the peak velocities.