Abstract
This is a synopsis of the lecture addressed at the 9-th annual convention of our association at University of Tsukuba in 1991. As entitled, the concept of structure of F. H. Allport was expounded, which he developed as a unifying principle of perception in his book Theories of perception and the concept of structure (Wiley, 1955). The book was considered being of high value as an overall review of and criticism on theories of perception in the first half of this century. Because of Allport being a social psychologist, his concept of structure inevitably extended to the outstructural tangencies with social contexts, its psychophysiological implication was particularly emphasized, though, in this address.
