“…The relations between illusions and figural aftereffects have been discussed by several authors (e.g., Adam, 1966; Ganz, 1966a, 1966b; Hochberg, 1971; Logan, 1962, cited in Day, 1969; Oyama, 1960; Pollack, 1967). Many experimental studies relevant to this problem have been made by Japanese researchers (e.g., Ikeda & Obonai, 1955a, 1955b; Ikuta, 1956; Suto, 1961). Situations have been designed that make it possible to study illusions, aftereffects, and TOEs by varying the temporal and spatial relations between three stimulus figures—inspection (In), test (Tt), and Co.…”