Figure 6
From: Control of thumb force using surface functional electrical stimulation and muscle load sharing
Individual muscle control. Sine (0.5 Hz) tracking results averaged over all healthy subjects (left) and over all stroke subjects (right). Results shown for the three selected muscles: Abductor Pollicis Longus (AbPL), Opponens Pollicis (OpP) and Flexor Pollicis Brevis (FPB) and for feedback control only. The mean over all subjects is shown by the solid line, shaded areas indicate the standard deviation. For AbPL only data for S4 and S5 is shown in (b), as in the other stroke subjects this muscle could not be activated.