Binaural pitch perception via Ghost Stochastic Resonance

PABLO BALENZUELA; JORDI GARCIA OJALVO

ICTP, Trieste, Italia

Workshop; Design and contrl of Self-Organization in Physical, Chemical and Biological Systems,; 2005

ICTP

We have investigated how the missing fundamental originates not at the detec- tion, but at the processing level, by using a complex harmonic signal in which the harmonics are distributed among the different coupled elements. In this case, cou- pling is seen to mediate the processing of the signal and the subsequent generation of the missing fundamental. Two different coupling architectures will be discussed: two excitable units coupled bidirectionally by mutual injection, and a neuronal net- work composed of two sensory neurons acting synaptically (and unidirectionally) upon a third processing neuron.