Three experiments involving 107 adults who performed mental rotation tasks explored how location information is incorporated into image representation. Results suggest that image is coded retinotopically in image representations and that there is no spatiotropic transform in the early stages of visual processing. (SLD)

In two experiments subjects were required to determine whether a random, angular form, presented at any of a number of picture-plane orientations was a "standard" or "reflected" version. Average time required to make this determination increased linearly with the angular departure of the form from a previously learned orientation. (Author/BJG)