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Titolo:
RESONANCE EFFECT FOR NEURAL SPIKE TIME RELIABILITY
Autore:
HUNTER JD; MILTON JG; THOMAS PJ; COWAN JD;
Indirizzi:
UNIV CHICAGO,DEPT NEUROL,MC 2030,5841 S MARYLAND AVE CHICAGO IL 60637 UNIV CHICAGO,DEPT NEUROL CHICAGO IL 60637 UNIV CHICAGO,DEPT MATH CHICAGO IL 60637 UNIV CHICAGO,COMM NEUROBIOL CHICAGO IL 60637
Titolo Testata:
Journal of neurophysiology
fascicolo: 3, volume: 80, anno: 1998,
pagine: 1427 - 1438
SICI:
0022-3077(1998)80:3<1427:REFNST>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE-LOCKED RESPONSES; CAT VISUAL-CORTEX; SQUID GIANT-AXONS; NEOCORTICAL NEURONS; CORTICAL-NEURONS; FIRE MODELS; VARIABILITY; DYNAMICS; APLYSIA; INFORMATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
59
Recensione:
Indirizzi per estratti:
Citazione:
J.D. Hunter et al., "RESONANCE EFFECT FOR NEURAL SPIKE TIME RELIABILITY", Journal of neurophysiology, 80(3), 1998, pp. 1427-1438

Abstract

The spike timing reliability of Aplysia motoneurons stimulated by repeated presentation of periodic or aperiodic input currents is investigated. Two properties of the input are varied, the frequency content and the relative amplitude of the fluctuations to the mean (expressed asthe coefficient of variation; CV). It is shown that, for small relative amplitude fluctuations (CV approximate to 0.05-0.15), the reliability of spike timing is enhanced if the input contains a resonant frequency equal to the firing rate of the neuron in response to the DC component of the input. This resonance-related enhancement in reliability decreases as the relative amplitude of the fluctuations increases (CV --> 1). Similar results were obtained for a leaky integrate-and-fire neuronal model, suggesting that these effects are a general property of encoders that combine a threshold with a leaky integrator. These observations suggest that, when the magnitude of input fluctuations is small, changes in the power spectrum of the current fluctuations or in thespike discharge rate can have a pronounced effect on the ability of the neuron to encode a time-varying input with reliably timed spikes.

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Documento generato il 08/07/20 alle ore 07:31:33