title: Experiments on the Zöllner and related optical illusions.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007088:Illusions; D008297:Male; D008875:Middle Aged; D009474:Neurons / Q000502:physiology; D009903:Optical Illusions; D009949:Orientation; D012160:Retina / Q000294:innervation / Q000502:physiology; D014792:Visual Acuity