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Schematic representation of the 3 arm postures tested. The thick black vertical line symbolizes the U-shaped piece that was used to couple the subject's fingers to the shaft of the servomotor (Kamper and Rymer 2000). The thick black horizontal line symbolizes the surface of the experimental table next to which the subject was seated. The small gray rectangle symbolizes the cushioned support placed underneath the subject's elbow to support the subject's arm.
