Visual Velocity Discrimination: Effects of Spatial and Temporal Cues

Science  19 Oct 1962:
Vol. 138, Issue 3538, pp. 437-438
DOI: 10.1126/science.138.3538.437


Weber ratios were obtained for visual velocity discrimination under three topographic conditions with the same subjects and psychophysical procedures. The conditions differed regarding the presence of either temporal or spatial cues, these being correlated in magnitude with stimulus velocity. Systematic effects of the cues upon the level of velocity discrimination were noted.