Abstract: A method of providing rehabilitation movement training for a person suffering from nerve damage, stroke, spinal cord injury, neurological trauma or neuromuscular disorder in attempting to move a body part about a joint using a powered orthotic device includes sensing at least one electromyographic signal of a muscle associated with motion about the joint, applying in a first direction with respect to the joint a force having a magnitude that is a first function of the at least one sensed electromyographic signal, and applying in a second direction with respect to the joint a return force that is a second function of the at least one sensed electromyographic signal, wherein the second function differs from the first function.

Abstract: A method and apparatus which enables, regulates, controls, and monitors the flow of energy from “source cells” to “target cells”, for the purpose of harvesting otherwise wasted energy from the source cells, and using that energy to charge the target cells. Embodiments also provide audio, tactile, and/or visual user feedback regarding the status of the system, of its components, and of the individual cells.