After 12 weeks of using the device, the patients' scores increased an average of 6.2 points on a 57-point scale.
"An increase of six points represents a meaningful improvement in quality of life," Leuthardt said. "For some people, this represents the difference between being unable to put on their pants by themselves and being able to do so."
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Each participant also rated his or her ability to use the affected arm and his or her satisfaction with the skills. Self-reported abilities and satisfaction significantly improved over the course of the study.
How much each patient improved varied, and the degree of improvement did not correlate with time spent using the device. Rather, it correlated with how well the device read brain signals and converted them into hand movements.
"As the technology to pick up brain signals gets better, I'm sure the device will be even more effective at helping stroke patients recover some function," Huskey said.
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