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. 2011 Apr 20;8:19. doi: 10.1186/1743-0003-8-19

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Copyright ©2011 Carpinella et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Angular velocity during hand opening. Velocity profiles of MCPJ and IPJ of a single finger of a representative healthy subject (a) and of six stroke patients (b, c, d, e, f, g) during hand opening. Delay (Δ) between IPJ and MCPJ angles are shown. Note that type 0 hand (b) showed a delay in the control range. Type I hands (c, d) revealed a reversed inter-joint coordination sequence (IPJ-MCPJ), while type II hands (e, f) showed prolonged delay with respect to controls. Type III hand (g) showed a contemporary extension of both MCPJ and IPJ.