info:eu-repo/semantics/article
Subharmonic stochastic synchronization and resonance in a neuronal system
Fecha
2002-10Registro en:
Chialvo, Dante Renato; Calvo, Oscar Alberto; Gonzalez, Diego L.; Piro, Oreste; Savino, Guillermo Vicente; Subharmonic stochastic synchronization and resonance in a neuronal system; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 65; 2; 10-2002; 345-347
1539-3755
CONICET Digital
CONICET
Autor
Chialvo, Dante Renato
Calvo, Oscar Alberto
Gonzalez, Diego L.
Piro, Oreste
Savino, Guillermo Vicente
Resumen
We study the response of a model neuron, driven simultaneously by noise and at least two weak periodic signals. We focus on signals with frequencies components kf0,(k+1)f0,…(k+n)f0 with k>1. The neuron’s output is a sequence of pulses spaced at random interpulse intervals. We find an optimum input noise intensity for which the output pulses are spaced ∼1/f0, i.e., there is a stochastic resonance (SR) at a frequency missing in the input. Even higher noise intensities uncover additional, but weaker, resonances at frequencies present in the input. This is a different form of SR whereby the most robust resonance is the one enhancing a frequency, which is absent in the input, and which is not possible to recover via any linear processing. This can be important in understanding sensory systems including the neuronal mechanism for perception of complex tones.