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Titolo:
Effects of correlated and independent noise on signal processing in neuronal systems - art. no. 031907
Autore:
Liu, F; Hu, BB; Wang, W;
Indirizzi:
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China Nanjing Univ Nanjing Peoples R China 210093 jing 210093, Peoples R China Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China Nanjing Univ Nanjing Peoples R China 210093 jing 210093, Peoples R China Hong Kong Baptist Univ, Dept Phys, Hong Kong, Hong Kong, Peoples R China Hong Kong Baptist Univ Hong Kong Hong Kong Peoples R China oples R China Hong Kong Baptist Univ, Ctr Nonlinear Studies, Hong Kong, Hong Kong, Peoples R China Hong Kong Baptist Univ Hong Kong Hong Kong Peoples R China oples R China Univ Houston, Dept Phys, Houston, TX 77204 USA Univ Houston Houston TX USA 77204 uston, Dept Phys, Houston, TX 77204 USA
Titolo Testata:
PHYSICAL REVIEW E
fascicolo: 3, volume: 6303, anno: 2001,
parte:, 1
pagine: 1907 -
SICI:
1063-651X(200103)6303:3<1907:EOCAIN>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
HODGKIN-HUXLEY NEURON; CAT VISUAL-CORTEX; STOCHASTIC RESONANCE; PSYCHOPHYSICAL PERFORMANCE; COHERENCE RESONANCE; CORTICAL-NEURONS; ONGOING ACTIVITY; VARIABILITY; RESPONSES; FREQUENCY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, F Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China Nanjing Univ Nanjing Peoples R China 210093 0093, Peoples R China
Citazione:
F. Liu et al., "Effects of correlated and independent noise on signal processing in neuronal systems - art. no. 031907", PHYS REV E, 6303(3), 2001, pp. 1907

Abstract

Stochastic resonance has recently received considerable attention demonstrating that noise can play a constructive role in signal processing. We investigate the effects of input noise on sensory processing via numerical simulation when they are independent of each other or spatially correlated in aglobally coupled neuronal network. The network exhibits a coherent behavior in the absence of stimulation. Such ongoing activity has a remarkable influence on neuronal responses to stimuli. In the presence of a subthreshold periodic signal, the activity averaged over neurons can convey precise information about the stimulus in the case of independent noise. On the other hand, when the noise is correlated among the neurons, the average response is nearly as noisy and variable as the responses of the individual neurons. Thus, the spatially correlated noise diminishes the beneficial effects of pooling, although it can evoke synchronous firings of neurons. These suggestthat response variability in cortical activity may be closely related to the correlation in input noise.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 12:17:50