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Titolo:
Balanced neurons: analysis of leaky integrate-and-fire neurons with reversal potentials
Autore:
Burkitt, AN;
Indirizzi:
Bion Ear Inst, Melbourne, Vic 3002, Australia Bion Ear Inst Melbourne VicAustralia 3002 Melbourne, Vic 3002, Australia
Titolo Testata:
BIOLOGICAL CYBERNETICS
fascicolo: 4, volume: 85, anno: 2001,
pagine: 247 - 255
SICI:
0340-1200(200110)85:4<247:BNAOLI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERSPIKE INTERVALS; STOCHASTIC RESONANCE; NEURAL ACTIVITY; CORTICAL-CELLS; MODEL; VARIABILITY; CORTEX; COEFFICIENT; DISCHARGE; NETWORKS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Burkitt, AN Bion Ear Inst, 384-388 Albert St, Melbourne, Vic 3002, Australia Bion Ear Inst 384-388 Albert St Melbourne Vic Australia 3002 a
Citazione:
A.N. Burkitt, "Balanced neurons: analysis of leaky integrate-and-fire neurons with reversal potentials", BIOL CYBERN, 85(4), 2001, pp. 247-255

Abstract

A new technique is presented for analyzing leaky integrate-and-fire neurons that incorporates reversal potentials, which impose a biologically realistic lower bound to the membrane potential. The time distribution of the synaptic inputs is modeled as a Poisson process. The analysis is carried out in the Gaussian approximation, which comparison with numerical simulations confirms is most accurate in the limit of a large number of inputs. The hypothesis that the observed variability in the spike times of cortical neuronsis caused by a balance of excitatory and inhibitory synaptic inputs is supported by the results for the coefficient of variation of the interspike intervals. Its value decreases with both increasing numbers and amplitude of inputs, and is consistently lower than 1.0 over a wide range of realistic parameter values. The dependence of the output spike rate upon the rate, number, and amplitude of the synaptic inputs, as well as upon the value of theinhibitory reversal potential, is given.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 04:43:37