Anomalous diffusion and non-Gaussian velocity distribution of Hydra cells in cellular aggregates

Arpita Upadhyaya, Jean-Paul Rieu, James A. Glazier and Yasuji Sawada

Physica A: Statistical Mechanics and its Applications, 2001, vol. 293, issue 3, 549-558

Abstract: We study the center of mass motion of single endodermal Hydra cells in two kinds of cellular aggregates: endodermal and ectodermal. The mean square displacement displays anomalous super-diffusion with 〈x2〉∼tα where α>1. The velocity distribution function is non-Gaussian and fits well the q-distribution function of velocities within the framework of the non-extensive thermostatistics proposed by Tsallis. Our results indicate that cell motion in two-dimensional cellular aggregates can be described by a “correlated-type” anomalous diffusion.

Keywords: Cell motion; Anomalous diffusion; Tsallis statistics (search for similar items in EconPapers)
Date: 2001
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Citations: View citations in EconPapers (10)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:293:y:2001:i:3:p:549-558

DOI: 10.1016/S0378-4371(01)00009-7

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