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2004

Signaling contours by neuromorphic wave propagation

9 years 8 months ago
Signaling contours by neuromorphic wave propagation
Abstract. We describe a neuromorphic retina that signals a luminance edge as a spike. In a fast process, the luminance profile of the receptor layer determines the membrane potential of the ganglion cells and their individual, adjustable spiking thresholds. In a slower process, a wave-propagation process, the charge of ganglion cells with high membrane potential will propagate toward neighboring cells with low membrane potential and low spiking threshold, thus signaling the edge as a spike. Following that, the signaled edge (or contour) actively propagates across the retinal map. The retinal signal can be used for a contour-integration or a contour-propagation approach.
Christoph Rasche
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2004
Where BC
Authors Christoph Rasche
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