Residual aperiodic stochastic resonance in a bistable dynamic system transmitting a suprathreshold binary signal.
Conventional stochastic resonance can be viewed as an amplitude effect, in which a small (subthreshold) input signal receives assistance from noise to trigger a stronger response from a nonlinear system. We demonstrate another mechanism of improvement by the noise, which is more of a temporal effect. An intrinsically slow system has difficulty to respond to a fast (suprathreshold) input, and the noise plays a constructive role by spurring the system for a more efficient response. The possibility of this form of stochastic resonance is established and studied here in a double-well bistable dynamic system, driven by a suprathreshold random binary signal, with the noise accelerating the switching between wells.
Duan
Fabing
F
Laboratoire d'Ingénierie des Systèmes Automatisés (LISA), Université d'Angers, 62 avenue Notre Dame du Lac, 49000 Angers, France. fabing.duan@univ-angers.fr
Rousseau
David
D
Chapeau-Blondeau
François
F
D000200:Action Potentials / Q000502:physiology*; D003198:Computer Simulation; D008959:Models, Neurological; D015233:Models, Statistical; D017711:Nonlinear Dynamics; D010507:Periodicity; D013269:Stochastic Processes; D009435:Synaptic Transmission / Q000502:physiology*