Počet záznamů: 1

Accuracy of rate coding: When shorter time window and higher spontaneous activity help

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, ORCID}
Číslo 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 MŠMT - 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