Figure 4.

Changes in force contribution of the less-preferred limb across target locations. A: modulation range (%) of the force produced by less-preferred limbs (A1: control; A2: stroke). B: representative plots of relative force contribution of nondominant/more-impaired arms (TFR) at five target locations in the frontal plane, averaged across anterior directions (control subject C3; stroke subject S8). The modulation ranges of subjects with stroke were significantly greater than those of control subjects except the lateral force of the more-impaired side. The force contribution of more-impaired arm increased at the targets located in the more-impaired side. TFR, target force ratio.