Noise-driven neuromorphic tuned amplifier

Duccio Fanelli, Francesco Ginelli, Roberto Livi, Niccolò Zagli, Clement Zankoc

Research output: Contribution to journalArticle

6 Citations (Scopus)
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Abstract

We study a simple stochastic model of neuronal excitatory and inhibitory interactions. The model is defined on a directed lattice and internodes couplings are modulated by a nonlinear function that mimics the process of synaptic activation. We prove that such a system behaves as a fully tunable amplifier: the endogenous component of noise, stemming from finite size effects, seeds a coherent (exponential) amplification across the chain generating giant oscillations with tunable frequencies, a process that the brain could exploit to enhance, and eventually encode, different signals. On a wider perspective, the characterized amplification process could provide a reliable pacemaking mechanism for biological systems. The device extracts energy from the finite size bath and operates as an out of equilibrium thermal machine, under stationary conditions.
Original languageEnglish
Article number062313
Pages (from-to)1-11
Number of pages11
JournalPhysical Review. E, Statistical, Nonlinear and Soft Matter Physics
Volume96
Issue number6
DOIs
Publication statusPublished - 26 Dec 2017

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amplifiers
Amplification
brain
seeds
baths
Finite Size Effects
Thermal Equilibrium
activation
Nonlinear Function
Biological Systems
oscillations
Stochastic Model
Activation
Oscillation
interactions
Energy
Interaction
energy
Model
Brain

Cite this

Noise-driven neuromorphic tuned amplifier. / Fanelli, Duccio; Ginelli, Francesco; Livi, Roberto; Zagli, Niccolò; Zankoc, Clement.

In: Physical Review. E, Statistical, Nonlinear and Soft Matter Physics, Vol. 96, No. 6, 062313, 26.12.2017, p. 1-11.

Research output: Contribution to journalArticle

Fanelli, D, Ginelli, F, Livi, R, Zagli, N & Zankoc, C 2017, 'Noise-driven neuromorphic tuned amplifier', Physical Review. E, Statistical, Nonlinear and Soft Matter Physics, vol. 96, no. 6, 062313, pp. 1-11. https://doi.org/10.1103/PhysRevE.96.062313
Fanelli, Duccio ; Ginelli, Francesco ; Livi, Roberto ; Zagli, Niccolò ; Zankoc, Clement. / Noise-driven neuromorphic tuned amplifier. In: Physical Review. E, Statistical, Nonlinear and Soft Matter Physics. 2017 ; Vol. 96, No. 6. pp. 1-11.
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