Cool. And scary. But mostly cool.

Bioengineers have built a robotic exoskeleton arm to "retrain" the limbs of stroke survivors. The team from Arizona State University and Kinetic Muscles Inc. will present their work at this summer's 9th International Conference on Rehabilitation Robotics.

The device, built by a research team, led by biomedical engineer Jiping He, Ph.D., and his colleagues at Arizona State University and Kinetic Muscles, Inc., a start up biotech company, can also assess the effectiveness of the physical therapy so adjustments can be made to the regimen if necessary. He will present a paper on the robotic arm this summer at the 9th International Conference on Rehabilitation Robotics in Chicago.