In this Thursday, July 18, 2013 photo, Nadine Martin, a communication sciences professor speaks in view of an avatar on a television screen during an interview with the Associated Press at Temple

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In this Thursday, July 18, 2013 photo, Nadine Martin, a communication sciences professor speaks in view of an avatar on a television screen during an interview with the Associated Press at Temple University in Philadelphia. Martin and other researchers are working to develop a virtual speech therapist to help those trying to overcoming the language disorder known as aphasia. (AP Photo/Matt Rourke) less 

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Associated Press
Tue, Jul 30, 2013 2:24 PM EDT