Figure 7. Onset relations in the 50 trials with the highest rate of torque development: timeline with sequence of onsets relative to muscle motion onset (=0 ms), arrows represent the median, boxes interquartile range; Abbreviations: EMG_first, first EMG onset in multi-channel EMG; EMG_atbeam, EMG onset in the channels at the location of the ultrasound; Motion_sup, motion onset at the superficial biceps brachii muscle.