Astroglial-neural networks, diffusion-enhancement bilayers, and spatiotemporal grouping dynamics

Robert K. Cunningham; Allen M. Waxman

doi:10.1117/12.57941

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30 April 1992 Astroglial-neural networks, diffusion-enhancement bilayers, and spatiotemporal grouping dynamics

Robert K. Cunningham, Allen M. Waxman

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Proceedings Volume 1611, Sensor Fusion IV: Control Paradigms and Data Structures; (1992) https://doi.org/10.1117/12.57941
Event: Robotics '91, 1991, Boston, MA, United States

Abstract

A network is described that can be used for multiple targets grouping and tracking or directing a vision system's focus of attention. The network models a biologically plausible astroglial- neural network in the visual cortex whose parameters are tuned to match a psychophysical database on apparent motion. The architecture consists of a diffusion layer and a contrast- enhancement layer coupled by feedforward and feedback connections; input is provided by a separate feature extracting layer. The dynamics of the diffusion-enhancement bilayer exhibit grouping of static features on multiple scales as a function of time, and long-range apparent motion between time varying inputs. The model is cast as a parallel analog circuit which is realizable in VLSI. We present simulations that reproduce static grouping phenomena useful for multiple target grouping and tracking over multiple scales, demonstrate several long-range apparent motion phenomena, and discuss single targets that split, and multiple targets that merge.

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Robert K. Cunningham and Allen M. Waxman "Astroglial-neural networks, diffusion-enhancement bilayers, and spatiotemporal grouping dynamics", Proc. SPIE 1611, Sensor Fusion IV: Control Paradigms and Data Structures, (30 April 1992); https://doi.org/10.1117/12.57941

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