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Table 4 Correlation between strength and shoulder motion active range of motion, and grey matter volume (BA = Broadmann area, N.S. = not significant, CL = contralesional; values without CL are ipsilesional – on the side of the brain lesion)

From: Virtual reality-based treatment for regaining upper extremity function induces cortex grey matter changes in persons with acquired brain injury

Brain region Grasp strength Shoulder abduction Shoulder flexion Elbow flexion
Precentral gyrus r = 0.6 / p = 0.04 N.S. N.S. r = 0.6 / p = 0.03 CL
Supplementary motor area R = −0.6 / p = 0.03 r = 0.65 / p = 0.02
r = 0.8 / p = 0.003 CL
r = 0.8 / p = 0.003
r = 0.8 / p = 0.004 CL
r = −0.6 / p = 0.03
BA 6 N.S. r = 0.6 / p = 0.03 r = 0.6 / p = 0.03 N.S.