COVER ILLUSTRATION. Realistic photos of hand and feet were used during an experiment to determine whether patients affected by writer's cramp present with difficulties in tasks involving mental rotation of body parts and whether any impairments are specific to the affected hand or generalized to other body parts. Left and right hands (and feet) were mirror images of each other. Images of hands (and feet) could be presented in four views (back in picture plane, palm in picture plane, side from little finger and side from thumb) and six angular orientations (upright stimuli with fingers or toes pointing upwards had a rotation angle of 0°; five clockwise rotations of upright stimuli, namely, 60°, 120°, 180°, 240° and 300° were used). From Fiorio et al. Selective impairment of hand mental rotation in patients with focal hand dystonia. pp. 47–54.
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