title: Amplified signal response in scale-free networks by collaborative signaling.
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.
authors.affiliation: Departament d'Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Acebrón
authors.forename: Sergi
authors.initials: S
authors.lastname: Lozano
authors.forename: Alex
authors.initials: A
authors.lastname: Arenas