The dynamical foundations of motion pattern formation: stability,selective adaptation,and perceptual continuity |
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Authors: | Hock Howard S Schöner Gregor Giese Martin |
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Affiliation: | Department of Psychology, Florida Atlantic University, Boca Raton, Florida 33431, USA. hockhs@fau.edu |
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Abstract: | 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. |
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