5. Robots as assistive devicesThere

5. Robots as assistive devicesThere are several strategies employed by robotic systems to retrain movement after stroke. Workstation devices can either use simple games to encourage and guide movements, or integrate simulations of real-life tasks such as cooking or cleaning to create the perception of performing a functional task. An alternative strategy is to use wearable robotic devices to facilitate the performance of actual functional tasks.This can be conceived either as a training system to encourage restoration of motor abilities after removal of the device, or as an assistive device to assist the user on an ongoing basis. This latter approach is sometimes termed a powered orthosis, or else a neuroprosthesis.