Approaching object detector mouse retina circuit model analysis and implementation on cellular sensor-processor array

Authors:
Ákos Zarándy;Tamás Fülöp
Affiliations:
Computer and Automation Research Institute, Hungarian Academy of Sciences and Pázmány Péter Catholic University, The Faculty of Information Technology, Budapest, Hungary;Pázmány Péter Catholic University, The Faculty of Information Technology, Budapest, Hungary
Venue:
International Journal of Circuit Theory and Applications
Year:
2012

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Abstract

Approaching object detector structure has been recently identified in mouse retina, and its neural circuit model has been successfully built. A discrete-type mathematical model describing the retinal structure has been synthesized and implemented on a biologically motivated focal-plane mixed-signal sensor-processor device. The model responses have been analyzed, and the critical parameters have been identified, and their roles were studied. The model has been validated in real dynamic surround of a robotic arm, where the geometrical and the kinematic parameters of the movements were known. From the mathematical and experimental analysis, it has been concluded that this retinal structure has a capacity to generate a last second warning signal to avoid collisions. Copyright © 2012 John Wiley & Sons, Ltd.