A small network like that proposed in previous papers by one of the authors is studied when a pair of periodic signals are carried by the two different input neurons to verify the arising of ghost stochastic resonance phenomena in the third processing neuron. Suitable modifications of the stochastic leaky integrate-and-fire model are employed to describe the membrane potential of the input neurons while the processing neuron is modeled by means of a jump-diffusion process. A stochastic resonance behavior is detected for the processing neuron in correspondence with the ”ghost” frequencies both in the harmonic and in the anharmonic case. The range of parameter values under which this behavior occurs is specified and an interpretation of the coincidence detection mechanism involved is provided.

Ghost Stochastic Resonance for a neuron with a pair of periodic inputs

GIRAUDO, Maria Teresa;SACERDOTE, Laura Lea;
2007

Abstract

A small network like that proposed in previous papers by one of the authors is studied when a pair of periodic signals are carried by the two different input neurons to verify the arising of ghost stochastic resonance phenomena in the third processing neuron. Suitable modifications of the stochastic leaky integrate-and-fire model are employed to describe the membrane potential of the input neurons while the processing neuron is modeled by means of a jump-diffusion process. A stochastic resonance behavior is detected for the processing neuron in correspondence with the ”ghost” frequencies both in the harmonic and in the anharmonic case. The range of parameter values under which this behavior occurs is specified and an interpretation of the coincidence detection mechanism involved is provided.
BVAI 2007, Lecture Notes Computer Sciences
Springer
4729
398
407
9783540755548
http://www.springerlink.com/content/k81n225624273215/
Jump-Diffusion Process; First Passage Time; Ghost Stochastic resonance; Leaky Integrate and Fire model; Coincidence Detection
Giraudo MT; Sacerdote L.; Sicco A.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/62940
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