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The 14 different hand movements that were used in this study. (a) 1st finger flexion. (b) 1st finger extension. (c) 2nd finger flexion. (d) 2nd finger extension. (e) 3rd finger flexion. (f) 3rd finger extension. (g) 4th finger flexion. (h) 4th finger extension. (i) 5th finger flexion. (j) 5th finger extension. (k) Hand closing. (l) Hand opening. (m) Wrist flexion. (n) Wrist extension.
