Abstract
Geometric transformation theory which claims the correspondence between the stroboscopic motion and the geometric transformation of stimulus-figures in two- or three-dimensional rotation was examined from the viewpoint of stimulus configurational feature theory which stresses the role of parallel lines for three-dimensional stroboscopic rotation. It was found that the two theories were compatible to the extent that the “equality in length” of adjacent parallel elements powerfully contributes to the formation of an axis for three-dimensional rotation. This was true even in the case where there was no three-dimensional rotation in its geometry. The “inequality of length” of parallel lines lost the power to generate three-dimensional stroboscopic rotation but did not affect two-dimensional rotation at all. In all cases the angle of rotation in either two-dimensional or three-dimensional geometric rotation did not play any role as determinants of the types of stroboscopic rotation.
