Abstract
| Original language | English |
|---|---|
| Article number | 062313 |
| Pages (from-to) | 1-11 |
| Number of pages | 11 |
| Journal | Physical Review. E, Statistical, Nonlinear and Soft Matter Physics |
| Volume | 96 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 26 Dec 2017 |
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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 journal › Article
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TY - JOUR
T1 - Noise-driven neuromorphic tuned amplifier
AU - Fanelli, Duccio
AU - Ginelli, Francesco
AU - Livi, Roberto
AU - Zagli, Niccolò
AU - Zankoc, Clement
N1 - Acknowledgments The authors acknowledge financial support from H2020-MSCA-ITN-2015 project COSMOS 642563.
PY - 2017/12/26
Y1 - 2017/12/26
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevE.96.062313
DO - 10.1103/PhysRevE.96.062313
M3 - Article
VL - 96
SP - 1
EP - 11
JO - Physical Review. E, Statistical, Nonlinear and Soft Matter Physics
JF - Physical Review. E, Statistical, Nonlinear and Soft Matter Physics
SN - 1539-3755
IS - 6
M1 - 062313
ER -