Periodic calcium waves in coupled cells induced by internal noise

Matjaž Perc (Avtor), Marko Gosak (Avtor), Marko Marhl (Avtor)

Povzetek

We show that internal stochasticity, originating from finite cell sizes and related small numbers of reactant ions participating in the dynamics, is able to extract a characteristic spatial frequency of calcium waves in the medium of diffusively coupled cells. Internal noise is thereby the only agent acting on the system. As the spatial periodicity is best pronounced at an intermediate level of stochasticity the reported phenomenon is thus a novel observation of internal noise spatial coherence resonance in biochemical tissue-like media. In addition, results shed light on the stochastic versus deterministic nature of dynamics at the cellular and tissue level.

Ključne besede

biofizika;hrup;intenziteta hrupa;prostorska resonanca;stohastični procest;noise;spatiotemporal noise;intensity;spatial resonance;chemical media;stochastic systems;

Podatki

Jezik:	Angleški jezik
Leto izida:	2007
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FNM - Fakulteta za naravoslovje in matematiko
UDK:	577
COBISS:	15257352
ISSN:	0009-2614
Št. ogledov:	1337
Št. prenosov:	70
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	biofizika;hrup;intenziteta hrupa;prostorska resonanca;stohastični procest;
URN:	URN:SI:UM:
Strani:	str. 143-147
Letnik:	ǂVol. ǂ437
Zvezek:	ǂiss. ǂ1/3
Čas izdaje:	2007
ID:	8724107