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Experimental System Aims to Help Astronauts Return to Solid Footing

December 14th, 2009 Medgadget Editors Space Medicine

Researchers from NASA Johnson Space Center Neurosciences Laboratory and National Space Biomedical Research Institute are testing a new system that may make astronauts’ return to Earth a bit easier. If you’ve ever seen space travelers land back on terra firma after months in orbit, you must have noticed that they are usually carried by others or use wheelchairs. This happens because over time our sensory system forgets how to coordinate using gravity as one of the inputs. The new system may end up being used on spacecraft to keep astronauts from forgetting how to walk when gravity comes back to them.

Called an Adaptability Training System, the treadmill has a projection screen in front of it that shows an image of a room or hallway that moves as the user walks. Disturbances are simulated by tilting the treadmill in one direction as the image is tilted in another.
“At first, people find it difficult to walk on the treadmill since its movement and images are out of sync. But over time, they learn to walk on it efficiently. We call this concept ‘learning to learn,’” said Bloomberg, who is the associate team leader of NSBRI’s Sensorimotor Adaptation Team and a senior research scientist at NASA.
In addition to maximizing training efficiency, Bloomberg is looking at how long the benefit of the adaptability training lasts. Once subjects master the treadmill, they come back periodically for testing to see how well they perform. He is investigating if subjects can retain the training for up to six months, which would allow the training to take place before a long space mission.
Another goal of the researchers is to integrate a version of the system into the treadmill on a spacecraft, allowing astronauts to perform adaptability training on long missions. Integration would save space and power, both precious commodities on a spacecraft.

Full story from the National Space Biomedical Research Institute: Astronaut balancing act: Training to help explorers adapt to a return to gravity…

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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