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Naslov:Pacemaker-driven stochastic resonance on diffusive and complex networks of bistable oscillators
Avtorji:ID Perc, Matjaž (Avtor)
ID Gosak, Marko (Avtor)
Datoteke:.pdf New_Journal_of_Physics_2008_Perc,_Gosak_Pacemaker-driven_stochastic_resonance_on_diffusive_and_complex_networks_of_bistable_oscillators.pdf (2,18 MB)
MD5: 9A9C716BFABAE0CB3793370A672574C9
 
URL http://stacks.iop.org/1367-2630/10/i=5/a=053008?key=crossref.552df57d70c918cb537d60ee721027d4
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FNM - Fakulteta za naravoslovje in matematiko
Opis:We study the phenomenon of stochastic resonance on diffusive, small-world and scale-free networks consisting of bistable overdamped oscillators. Important thereby is the fact that the external subthreshold periodic forcing is introduced only to a single oscillator of the network. Hence, the forcing acts as a pacemaker trying to impose its rhythm on the whole network through the unit to which it is introduced. Without the addition of additive spatiotemporal noise, however, the whole network, including the unit that is directly exposed to the pacemaker, remains trapped forever in one of the two stable steady states of the local dynamics. We show that the correlation between the frequency of subthreshold pacemaker activity and the response of the network is resonantly dependent on the intensity of additive noise. The reported pacemaker-driven stochastic resonance depends most significantly on the coupling strength and the underlying network structure. Namely, the outreach of the pacemaker obeys the classic diffusion law in the case of nearest-neighbor interactions, thus being proportional to the square root of the coupling strength, whereas it becomes superdiffusive by an appropriate small-world or scale-free topology of the interaction network. In particular, the scale-free topology is identified as being optimal for the dissemination of localized rhythmic activity across the whole network. Also, we show that the ratio between the clustering coefficient and the characteristic path length is the crucial quantity defining the ability of a small-world network to facilitate the outreach of the pacemaker-emitted subthreshold rhythm. We additionally confirm these findings by using the FitzHugh-Nagumo excitable system as an alternative to the bistable overdamped oscillator.
Ključne besede:noise, bistable dynamics, stochastic simulations, complex networks
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Leto izida:2008
Št. strani:str. 1-22
Številčenje:Letn. 10
PID:20.500.12556/DKUM-60113 Novo okno
ISSN:1367-2630
UDK:519.83:53
COBISS.SI-ID:12323606 Novo okno
DOI:10.1088/1367-2630/10/5/053008 Novo okno
ISSN pri članku:1367-2630
NUK URN:URN:SI:UM:DK:YVV7AGDE
Datum objave v DKUM:03.07.2017
Število ogledov:1418
Število prenosov:453
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:New journal of physics
Založnik:Institute of Physics Publishing, Deutsche Physikalische Gesellschaft
ISSN:1367-2630
COBISS.SI-ID:21135621 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:Z1-9629
Naslov:Stohastika in kaos kot učinkovita promotorja kooperacije in reda v fizikalnih sistemih in družbi

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:09.06.2016

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:šum, bistabilna dinamika, stohastične simulacije, kompleksne mreže


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