Abstract
The relations between estimation and subjective intensities of time, velocity and distance were examined by an analysis based on matrix theory in absolute motion perception observed in pursuit. The free ratio method was used. The results suggested that the relations are isomorphic with the corresponding relations in physics. The trends of derived subjective intensity values of time, velocity, and distance were described by a single function against the changes of physical values respectively, regardless of the differences in stimuli estimated, and, moreover, in the case of velocity and distance, regardless of the differences in the experimental conditions of Mashhour's (1964) and this study.