A friendly robotic arm plays tic-tac-toe to help rehabilitate patients

Researchers at Ben-Gurion University of the Negev in Israel are building a tic-tac-toe game to help patients with their rehabilitation exercises. The game is played on a grid of boxes and includes “embodied” and non-embodied play. Embodied play means a robotic arm will grab and place a marker – in this case a small cup – and non-embodied play includes bright lights that light up to mark the computer’s spot.

The system uses a Kinova arm and cups. The cups are part of the rehabilitation process and help users learn to grasp and manipulate objects after an illness or accident.

“Playing Tic Tac Toe with a set of cups (instead of X’s and O’s) is one example of a game that can help rehabilitate an upper limb,” said Dr. Shelly Levy-Tzedek. “A person can pick up and place many cups while enjoying a game and improving their performance of a daily task.”

Interestingly the speed of the robot had an effect on the users. A slower robot would make users perform more slowly while a faster robot sped up the game. This could be used to modify the game for individual patients and individual needs. Because the robot never gets tired the rehabilitation staff can pay attention to the minute movements of a patient, catering the speed and type of play as appropriate for their specific rehabilitation regimens.

The research paper appeared in Restorative Neurology and Neuroscience.