The dynamical foundations of motion pattern formation: stability, selective adaptation, and perceptual continuity.
A dynamical model is used to show that global motion pattern formation for several different apparent motion stimuli can be embodied in the stable distribution of activation over a population of concurrently activated, directionally selective motion detectors. The model, which is based on motion detectors being interactive, noisy, and self-stabilizing, accounts for such phenomena as bistability, spontaneous switching, hysteresis, and selective adaptation. Simulations show that dynamical solutions to the motion correspondence problem for a bistable stimulus (two qualitatively different patterns are formed) apply as well to the solution for a monostable stimulus (only one pattern is formed) and highlight the role of interactions among sequentially stimulated detectors in establishing the state dependence and, thereby, the temporal persistence of percepts.
Hock
Howard S
HS
Department of Psychology, Florida Atlantic University, Boca Raton, Florida 33431, USA. hockhs@fau.edu
Schöner
Gregor
G
Giese
Martin
M
D000222:Adaptation, Physiological; D006801:Humans; D009039:Motion Perception; D014796:Visual Perception