Počet záznamů: 1
Accuracy of rate coding: When shorter time window and higher spontaneous activity help
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SYSNO ASEP 0474687 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Accuracy of rate coding: When shorter time window and higher spontaneous activity help Tvůrce(i) Leváková, Marie (FGU-C) RID, ORCID
Tamborrino, M. (AT)
Košťál, Lubomír (FGU-C) RID, ORCID, SAI
Lánský, Petr (FGU-C) RID, ORCIDČíslo článku 022310 Zdroj.dok. Physical Review E. - : American Physical Society - ISSN 2470-0045
Roč. 95, č. 2 (2017)Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova rate coding ; observation window ; spontaneous activity ; Fisher information ; perfect integrate-and-fire model ; Wiener process Vědní obor RIV BB - Aplikovaná statistika, operační výzkum Obor OECD Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology CEP GA15-08066S GA ČR - Grantová agentura ČR 7AMB17AT048 GA MŠk - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora FGU-C - RVO:67985823 UT WOS 000394665400006 EID SCOPUS 85014384567 DOI 10.1103/PhysRevE.95.022310 Anotace It is widely accepted that neuronal firing rates contain a significant amount of information about the stimulus intensity. Nevertheless, theoretical studies on the coding accuracy inferred from the exact spike counting distributions are rare. We present an analysis based on the number of observed spikes assuming the stochastic perfect integrate-and-fire model with a change point, representing the stimulus onset, for which we calculate the corresponding Fisher information to investigate the accuracy of rate coding. We analyze the effect of changing the duration of the time window and the influence of several parameters of the model, in particular the level of the presynaptic spontaneous activity and the level of random fluctuation of the membrane potential, which can be interpreted as noise of the system. The results show that the Fisher information is nonmonotonic with respect to the length of the observation period. This counterintuitive result is caused by the discrete nature of the count of spikes. We observe also that the signal can be enhanced by noise, since the Fisher information is nonmonotonic with respect to the level of spontaneous activity and, in some cases, also with respect to the level of fluctuation of the membrane potential. Pracoviště Fyziologický ústav Kontakt Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Rok sběru 2018
Počet záznamů: 1