Format

Send to

Choose Destination
Gen Physiol Biophys. 2004 Mar;23(1):21-38.

Different types of noise in leaky integrate-and-fire model of neuronal dynamics with discrete periodical input.

Author information

1
Istituto di Cibernetica, E. Caianiello del CNR, Pozzuoli, Napoli, Italy. vdm@biocib.cib.na.cnr.it

Abstract

Different variants of stochastic leaky integrate-and-fire model for the membrane depolarisation of neurons are investigated. The model is driven by a constant input and equidistant pulses of fixed amplitude. These two types of signal are considered under the influence of three types of noise: white noise, jitter on interpulse distance, and noise in the amplitude of pulses. The results of computational experiments demonstrate the enhancement of the signal by noise in subthreshold regime and deterioration of the signal if it is sufficiently strong to carry the information in absence of noise. Our study holds mainly to central neurons that process discrete pulses although an application in sensory system is also available.

PMID:
15270127
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Institute of Molecular Physiology and Genetics, Slovak Academy of Sciences
Loading ...
Support Center