Neural mechanism for binaural pitch perception via ghost stochastic resonance

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We present a physiologically plausible binaural mechanism for the perception of the pitch of complex sounds via ghost stochastic resonance. In this scheme, two neurons are driven by noise and a different periodic signal each (with frequencies f1 =k f0 and f2 = (k+1) f0, where k>1), and their outp...

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Detalles Bibliográficos
Autor principal: Balenzuela, Pablo
Publicado: 2005
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10541500_v15_n2_p_Balenzuela
http://hdl.handle.net/20.500.12110/paper_10541500_v15_n2_p_Balenzuela
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10541500_v15_n2_p_Balenzuela
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spelling paper:paper_10541500_v15_n2_p_Balenzuela2023-06-08T16:03:05Z Neural mechanism for binaural pitch perception via ghost stochastic resonance Balenzuela, Pablo We present a physiologically plausible binaural mechanism for the perception of the pitch of complex sounds via ghost stochastic resonance. In this scheme, two neurons are driven by noise and a different periodic signal each (with frequencies f1 =k f0 and f2 = (k+1) f0, where k>1), and their outputs (plus noise) are applied synaptically to a third neuron. Our numerical results, using the Morris-Lecar neuron model with chemical synapses explicitly considered, show that intermediate noise levels enhance the response of the third neuron at frequencies close to f0, as in the cases previously described of ghost resonance. For the case of an inharmonic combination of inputs (f1 =k f0 +Δf and f2 = (k+1) f0 +Δf) noise is also seen to enhance the rates of most probable spiking for the third neuron at a frequency fr = f0 + [Δf (k+12)]. In addition, we show that similar resonances can be observed as a function of the synaptic time constant. The suggested ghost-resonance-based stochastic mechanism can thus arise either at the peripheral level or at a higher level of neural processing in the perception of pitch. © 2005 American Institute of Physics. Fil:Balenzuela, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10541500_v15_n2_p_Balenzuela http://hdl.handle.net/20.500.12110/paper_10541500_v15_n2_p_Balenzuela
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present a physiologically plausible binaural mechanism for the perception of the pitch of complex sounds via ghost stochastic resonance. In this scheme, two neurons are driven by noise and a different periodic signal each (with frequencies f1 =k f0 and f2 = (k+1) f0, where k>1), and their outputs (plus noise) are applied synaptically to a third neuron. Our numerical results, using the Morris-Lecar neuron model with chemical synapses explicitly considered, show that intermediate noise levels enhance the response of the third neuron at frequencies close to f0, as in the cases previously described of ghost resonance. For the case of an inharmonic combination of inputs (f1 =k f0 +Δf and f2 = (k+1) f0 +Δf) noise is also seen to enhance the rates of most probable spiking for the third neuron at a frequency fr = f0 + [Δf (k+12)]. In addition, we show that similar resonances can be observed as a function of the synaptic time constant. The suggested ghost-resonance-based stochastic mechanism can thus arise either at the peripheral level or at a higher level of neural processing in the perception of pitch. © 2005 American Institute of Physics.
author Balenzuela, Pablo
spellingShingle Balenzuela, Pablo
Neural mechanism for binaural pitch perception via ghost stochastic resonance
author_facet Balenzuela, Pablo
author_sort Balenzuela, Pablo
title Neural mechanism for binaural pitch perception via ghost stochastic resonance
title_short Neural mechanism for binaural pitch perception via ghost stochastic resonance
title_full Neural mechanism for binaural pitch perception via ghost stochastic resonance
title_fullStr Neural mechanism for binaural pitch perception via ghost stochastic resonance
title_full_unstemmed Neural mechanism for binaural pitch perception via ghost stochastic resonance
title_sort neural mechanism for binaural pitch perception via ghost stochastic resonance
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10541500_v15_n2_p_Balenzuela
http://hdl.handle.net/20.500.12110/paper_10541500_v15_n2_p_Balenzuela
work_keys_str_mv AT balenzuelapablo neuralmechanismforbinauralpitchperceptionviaghoststochasticresonance
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