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Nonlinear neuronal mode analysis of action potential encoding in the cockroach tactile spine neuron

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Abstract

Neuronal mode analysis is a recently developed technique for modelling the behavior of nonlinear systems whose outputs consist of action potentials. The system is modelled as a set of parallel linear filters, or modes, which feed into a multi-input threshold. The characteristics of the principal modes and the multi-input threshold device can be derived from Laguerre function expansions of the computed first- and second-order Volterra kernels when the system is stimulated with a randomly varying input. Neuronal mode analysis was used to model the encoder properties of the cockroach tactile spine neuron, a nonlinear, rapidly adapting, sensory neuron with reliable behavior. The analysis found two principal modes, one rapid and excitatory, the other slower and inhibitory. The two modes have analogies to two of the pathways in a block-structured model of the encoder that was developed from previous physiological investigations of the neuron. These results support the block-structured model and offer a new approach to identifying the components responsible for the nonlinear dynamic properties of this neuronal encoder.

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French, A.S., Marmarelis, V.Z. Nonlinear neuronal mode analysis of action potential encoding in the cockroach tactile spine neuron. Biol. Cybern. 73, 425–430 (1995). https://doi.org/10.1007/BF00201477

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  • DOI: https://doi.org/10.1007/BF00201477

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