Fig. 1

Contralaterally controlled functional electrical stimulation (CCFES) enables stroke survivors to open their paretic hand. The stroke survivor controls the amount of hand opening through a CCFES glove worn on their unaffected hand, which controls the intensity of electrical stimulation delivered to the finger and thumb extensor muscles of the paretic hand. The CCFES system enables stroke survivors to practice using their paretic hand to perform tasks in therapy and to self-administer hand opening exercises. Illustration by Erika Woodrum, CMI. © 2021 Cleveland FES Center, Cleveland, OH