ABSTRACT
A few researches (Fisher, 1969, Attneave, 1971, Poston and Stewart, 1978) explain multistable or ambiguous perception by catastrophe models. For example, in Fisher’s work (1967), it is clarified that man face and girl shape are perceived with almost same probability in the case of seeing Fisher’s figures. Also, Attneave (1971) describes that the different perception for Fisher’s figure is occurred by seeing from man face to girl shape and reverse using a sequence of continuous figures in which Fisher’s figure is interpolated in the middle of the sequence.
