Volume 90, Number 2, April 2010
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||20 May 2010|
Quantitative analysis of random ameboid motion
Institut für Angewandte Physik, WWU Münster - Corrensstraße 2/4, 48149 Münster, Germany, EU
2 Institut für Physik und Astronomie, Universität Potsdam - Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany, EU
3 Max Planck Institute for Dynamics and Self-Organization - Am Fassberg 11, 37077 Göttingen, Germany, EU
4 Center for the Ecological Study of Perception and Action, University of Connecticut - 406 Babbidge Road, Unit 1020, Storrs, CT 06269, USA
Corresponding author: email@example.com
Accepted: 13 April 2010
We quantify random migration of the social ameba Dictyostelium discoideum. We demonstrate that the statistics of cell motion can be described by an underlying Langevin-type stochastic differential equation. An analytic expression for the velocity distribution function is derived. The separation into deterministic and stochastic parts of the movement shows that the cells undergo a damped motion with multiplicative noise. Both contributions to the dynamics display a distinct response to external physiological stimuli. The deterministic component depends on the developmental state and ambient levels of signaling substances, while the stochastic part does not.
PACS: 87.17.Jj – Cell locomotion, chemotaxis / 05.10.Gg – Stochastic analysis methods (Fokker-Planck, Langevin, etc.) / 05.40.Fb – Random walks and Levy flights
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.