Amplified signal response in scale-free networks by collaborative signaling

TL;DR

This paper investigates how heterogeneous scale-free network topologies can enhance the response of interconnected bistable elements to weak external signals, combining numerical and analytical methods.

Contribution

It demonstrates that heterogeneity in scale-free networks significantly amplifies external signals, providing new insights into information processing in complex systems.

Findings

Heterogeneous topology enhances signal response

Analytical and numerical results agree in simplified models

Scale-free networks outperform regular networks in signal amplification

Abstract

Many natural and artificial two-states signaling devices are connected forming networks. The information-processing potential of these systems is usually related to the response to weak external signals. Here, using a network of overdamped bistable elements, we study the effect of a heterogeneous complex topology on the signal response. The analysis of the problem in random scale-free networks, reveals that heterogeneity plays a crucial role in amplifying external signals. We have contrasted numerical simulations with analytical calculations in simplified topologies.