Table 2.

Electrodes used to measure EMG signals for correlation to model-predicted activations. In the first three subjects, only surface electrodes were used, placed on six muscles. In the last two subjects, eight surface and three fine wire percutaneous electrodes were used.

subjects	S1 and S2	S3	S4 and S5
surface	biceps	biceps	biceps
electrodes	triceps	triceps	triceps
	anterior deltoid	anterior deltoid	anterior deltoid
	middle deltoid
	posterior deltoid	posterior deltoid	posterior deltoid
	upper trapezius	upper trapezius	upper trapezius
		pectoralis major	pectoralis major
			latissimus dorsi
			serratus anterior
percutaneous			infraspinatus
electrodes			supraspinatus
			pronator teres