Original title: Brain-actuated functional electrical stimulation elicits lasting arm motor recovery after stroke
After a stroke, some people cannot move an arm as they intend. A brain-computer interface reads signals linked to an intended movement and uses them to trigger functional electrical stimulation, which activates the arm’s muscles. In the study, this linked treatment led to more lasting arm recovery than sham stimulation, which acts as a comparison treatment. The people who received it also showed stronger connections between movement-related brain areas, and those changes were tied to functional improvement.
When you reach for a mug, you decide to move, your arm acts, and your hand sends information back about what happened. After a stroke, that chain can be disrupted, making it hard to move the arm as intended. In this paper, the person’s attempt to move triggers electrical stimulation of the arm, linking the intention to movement and the body’s feedback.
For people with lasting arm weakness after a stroke, this approach links the attempt to move with electrical stimulation of the arm. The reported recovery remained six to twelve months after therapy ended, and brain activity changes were associated with improvement.
The abstract does not give the number or characteristics of participants, the treatment schedule, or the size of the recovery effect. It also does not establish which parts of the therapy cause the improvement or whether the results apply beyond chronic stroke survivors.
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Brain-actuated functional electrical stimulation elicits lasting arm motor recovery after stroke — Andrea Biasiucci, R. Leeb, Iñaki Iturrate et al. — Nature Communications — doi:10.1038/s41467-018-04673-z
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.