PERCEPTION OF DYNAMIC STIMULI.

Stemming from considerations of a cybernetic nature, the program was directed towards a theoretical and empirical examination of the perception of changing stimuli. Representative stimuli were selected so as to fall into two classes Kinetic e.g., changing loudness and brightness, and topographic e.g., expanding lines and circles moving points. Both classes of stimuli were presented in such manner as to permit either continuous or discontinuous display, and in either of two modes Isochronal equal time for standard and comparison stimuli, or isometric equal final magnitudes attained by standard and comparison stimuli. It is tentatively concluded that topographic displays are superior i.e., are perceived more precisely to kinetic, discontinuous initial and final values only are superior to continuous, and isochronal are superior to isometric. Author