Stochastic resonance on excitable small-world networks via a pacemaker

Povzetek

We show that the correlation between the frequency of subthreshold pacemaker activity and the response of an excitable array is resonantly dependent on the intensity of additive spatiotemporal noise. Thereby, the effect of the underlying network, defining the interactions among excitable units, largely depends on the coupling strength. Only for intermediate coupling strengths is the small world property able to enhance the stochastic resonance, whereas for smaller and larger couplings the impact of the transition from diffusive to random networks is less profound. Thus, the optimal interplay between a localized source of weak rhythmic activity and the response of the whole array demands a delicate balance between the strength of excitation transfer and the effectiveness of the network structure to support it.

Ključne besede

stohastična resonanca;mali-svet mreže;kardiologija;nevrofiziologija;nelinearni dinamični sistemi;prostorsko-časovni pojavi;stochastic resonance;small-world networks;cardiology;neurophysiology;nonlinear dynamical systems;spatiotemporal phenomena;

Podatki

Jezik:	Angleški jezik
Leto izida:	2007
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FNM - Fakulteta za naravoslovje in matematiko
UDK:	519.2
COBISS:	12064534
ISSN:	1539-3755
Št. ogledov:	1541
Št. prenosov:	81
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	stohastična resonanca;mali-svet mreže;kardiologija;nevrofiziologija;nelinearni dinamični sistemi;prostorsko-časovni pojavi;
URN:	URN:SI:UM:
Strani:	str. 066203-1-066203-7
Letnik:	76
Zvezek:	6
Čas izdaje:	2007
Ključne besede (UDK):	mathematics;natural sciences;naravoslovne vede;matematika;mathematics;matematika;probability;mathematical statistics;verjetnost;matematična statistika;
ID:	1019728