title: Identification of symmetry: effects of stimulus orientation and head position.
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D005556:Form Perception / Q000502:physiology; D006257:Head; D006801:Humans; D008297:Male; D010364:Pattern Recognition, Visual / Q000502:physiology; D011187:Posture; D011930:Reaction Time; D013028:Space Perception / Q000502:physiology