ABSTRACT
In the preceding chapters it has been argued that spatial relations are mentally represented in terms of sets of predicates, that is relationships between the object in question and various referents including the ego, other objects, and other more general frames of reference. Although the theory presented in the first three chapters argued that the same spatial predicates may occur both in perception and in the more conceptual and linguistic forms of representation, the studies presented up to this point have focused attention particularly upon linguistic and conceptual structures. In this chapter, attention is returned to the mental representation of perceptual relations, the coding, discrimination, and recognition of obliquely oriented lines.
