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Abstract:
We have developed and tested an analog/digital VLSI system
that models the coordination of biological segmental oscillators
underlying axial locomotion in animals such as leeches and
lampreys. In its current form, the system consists of a chain of
twelve pattern generating circuits that are capable of arbitrary
contralateral inhibitory synaptic coupling. Each pattern generating
circuit is implemented with two independent silicon Morris-Lecar
neurons with a total of 32 programmable (floating-gate based)
inhibitory synapses, and an asynchronous address-event
interconnection element that provides synaptic connectivity and
implements axonal delay. We describe and analyze the data from a
set of experiments exploring the system behavior in terms of
synaptic coupling.
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