title: Reflections on inversion and reversion.
abstract: A paper published recently in Perception has drawn attention to a question that appears to mystify psychologists, yet yields simply to the well-known law of reflection. The question of why a mirror reverses left and right, but not up and down, is explained in this paper, in terms of physical optics. The question of how mirror-reflected objects are perceived remains, of course, a psychological one.
authors.affiliation: Defence Research Agency, Fort Halstead, Sevenoaks, Kent, UK.
authors.forename: N D
authors.initials: ND
authors.lastname: Haig
mesh_terms: D001288:Attention; D004193:Discrimination Learning; D004292:Dominance, Cerebral; D006801:Humans; D055095:Optics and Photonics; D009949:Orientation; D010364:Pattern Recognition, Visual; D011601:Psychophysics