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. 2021 Dec 16;2:735819. doi: 10.3389/fresc.2021.735819

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Copyright © 2021 Vinehout, Tynes, Sotelo, Hyngstrom, McGuire and Schmit.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Sketch of assistive finger extension device. This device assists finger extension of stroke participants with spasticity via elastic bands (Theraband: 10.7 N resistance at 100% elongation, 15.1 N at 200%) that are supported by an outrigger on the dorsal part of the hand. Velcro straps attached to the patient's first four digits and were connected to an elastic band. A plastic brace served to stabilize the participant's forearm and wrist as they were instructed to flex and extend the digits. (B) Visual presentation prompt. The visual prompt was presented on a screen inside the bore and read “Relax” centered in a magenta circle (20 s) and “Open/Close” centered on a cyan circle (20 s, 1 Hz) for 6 min.