File photo Image: Shutterstock/Barabasa File photo Image: Shutterstock/Barabasa SOME SEVERELY IMPAIRED stroke survivors are regaining function in their arms after sometimes decades of immobility, thanks to a new video game-led training device.
Many stroke survivors can’t extend their arm forward with a straight elbow because the muscles act against each other in abnormal ways, called “abnormal co-activation” or “abnormal coupling”. Only about 30% of stroke patients in the US receive therapy after their initial in-patient rehabilitation stay, often because their injury is too severe to benefit from standard therapy, it costs too much, or they’re too far from a therapist.
This type of treatment only requires a small amount of muscle activation, which is advantageous for severely impaired stroke patients who typically can’t move enough to even begin standard physical therapy, according to the authors. The two abnormally coupled muscles moved the cursor in either horizontal or vertical directions, in proportion to their EMG amplitude.
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