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. 2018 Jun 27;42(3):384–395. doi: 10.5535/arm.2018.42.3.384

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Copyright © 2018 by Korean Academy of Rehabilitation Medicine

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 4. — Voluntary response indices (VRIs) obtained from healthy control and stroke patients. (A) Ankle dorsiflexion of hemiplegic side. (B) Ankle plantarflexion of hemiplegic side. The VRI shows high similarity index (SI) values throughout all maneuvers for control group and a variable range of magnitude of response vector (RV). The SI values were significantly lower in the stroke group compared with the control group for hemiplegic ankle dorsiflexion and plantarflexion. The surface electromyography magnitudes were also lower in the stroke group, with no significant difference.