Fig. 2From: Wearable technology in stroke rehabilitation: towards improved diagnosis and treatment of upper-limb motor impairmentEMG sensors (green) placed over biceps and flexor digitorum superficialis muscles, involved in elbow and wrist flexion, respectively. Electrodes placed asymmetrically with respect to the neuromuscular plaques allow capturing the electrical potential difference as the depolarization wave travels along the muscle cells’ membranes. Resulting signal (top left) is filtered and amplified for further processingBack to article page