Stochastic Model Explains Role of Excitation and Inhibition in Binaural Sound Localization in Mammals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F11%3A00186122" target="_blank" >RIV/68407700:21460/11:00186122 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.biomed.cas.cz/physiolres/pdf/60/60_573.pdf" target="_blank" >http://www.biomed.cas.cz/physiolres/pdf/60/60_573.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Stochastic Model Explains Role of Excitation and Inhibition in Binaural Sound Localization in Mammals

Popis výsledku v původním jazyce

Interaural time differences, the differences of arrival time of the sound at the two ears, provide a major cue for low-frequency sound localization in the horizontal plane. This is done in the medial superior olive using a stochastic spike timing. The inputs to the circuit are stochastic spike trains with a spike timing distribution described by a beta density. The outputs of the circuit reproduce the empirical firing rates found in experiment in response to the varying ITD. The outputs of the computational model are calculated numerically and these numerical simulations are also supported by analytical calculations. We formulate a simple hypothesis concerning how sound localization works in mammals. In conclusion, there is no array of delay lines as in the Jeffress's model, but instead the inhibitory input is shifted in time as a whole. This is consistent with experimental observations in mammals.

Název v anglickém jazyce

Stochastic Model Explains Role of Excitation and Inhibition in Binaural Sound Localization in Mammals

Popis výsledku anglicky

Interaural time differences, the differences of arrival time of the sound at the two ears, provide a major cue for low-frequency sound localization in the horizontal plane. This is done in the medial superior olive using a stochastic spike timing. The inputs to the circuit are stochastic spike trains with a spike timing distribution described by a beta density. The outputs of the circuit reproduce the empirical firing rates found in experiment in response to the varying ITD. The outputs of the computational model are calculated numerically and these numerical simulations are also supported by analytical calculations. We formulate a simple hypothesis concerning how sound localization works in mammals. In conclusion, there is no array of delay lines as in the Jeffress's model, but instead the inhibitory input is shifted in time as a whole. This is consistent with experimental observations in mammals.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JD - Využití počítačů, robotika a její aplikace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physiological Research

ISSN

0862-8408

e-ISSN

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Svazek periodika

60

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

573-583

Kód UT WoS článku

000293138600018

EID výsledku v databázi Scopus

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