title: Early history of perceptual illusions.
authors.forename: D E
authors.initials: DE
authors.lastname: Jonannsen
mesh_terms: D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D009885:Ophthalmology / Q000266:history*; D011584:Psychology / Q000266:history*