Very large stochastic resonance gains in finite sets of interacting identical subsystems driven by subthreshold rectangular pulses

TL;DR

This paper investigates how a finite set of interacting subsystems exhibits exceptionally large stochastic resonance gains when driven by high-frequency subthreshold rectangular pulses, surpassing simpler systems.

Contribution

It demonstrates that complex interacting systems can achieve much larger SR gains with high-frequency subthreshold forcing, expanding understanding of nonlinear stochastic resonance.

Findings

Large SR gains observed in finite interacting systems

High-frequency subthreshold forcing enhances resonance effects

Simple explanations account for the large SR gains

Abstract

We study the phenomenon of nonlinear stochastic resonance (SR) in a complex noisy system formed by a finite number of interacting subunits driven by rectangular pulsed time periodic forces. We find that very large SR gains are obtained for subthreshold driving forces with frequencies much larger than the values observed in simpler one-dimensional systems. These effects are explained using simple considerations.