Figure 5From: Control of multi-joint arm movements for the manipulation of touch in keystroke by expert pianistsThe group means of the i m p θ ¨ M U S for the shoulder (A), elbow (B), wrist (C) and finger (D) joints at each loudness level. * p < 0.05, ** p < 0.01. The error bars represent ± 1 SE. A positive value indicates flexion for the shoulder and elbow joints, and extension for the wrist and finger joints (see arrows).Back to article page