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Comparison of electromyographic (EMG) signals in response to IO branch or whole nerve stimulation. A: example of IO EMG activity produced by supramaximal stimulation of whole IO nerve, each IO nerve branch stimulated separately, and their sum. Note: the EMG signals are aligned by the onset to facilitate amplitude comparison. B: group means ± SE of EMG peak-to-peak amplitudes of the whole IO nerve and the summed EMG activity of the branches (n = 8, * P < 0.05).
