Abstract:
We study the relationship between anomalous diffusion and persistent motion of micron-sized particles moving in a viscoelastic environment and subjected to an external noise. In the framework of a generalized Langevin equation, we compare the analytical expressions of the mean square displacement and the mean cosine of the turning angle. Both magnitudes can be easily computed from the particles trajectories, and allow us to investigate the different anomalous regimes typically obtained, for instance, in single particle tracking experiments within living cells. Finally, we analyze the directional changes occurring during the motion of pigment organelles driven by molecular motors in Xenopus laevis melanocytes, as an example of application of our model. © 2010 Elsevier B.V. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Active transport in complex media: Relationship between persistence and superdiffusion |
Autor: | Despsito, M.A.; Pallavicini, C.; Levi, V.; Bruno, L. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Consejo Nacional de Investigaciones Cientficas y Tcnicas, Argentina
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Palabras clave: | Anomalous diffusion; Generalized Langevin equation; Intracellular transport; Turning angle; Viscoelastic media; Anomalous diffusion; Generalized Langevin equation; Intracellular transport; Turning angle; Viscoelastic media; Diffusion; Viscoelasticity; Differential equations |
Año: | 2011
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Volumen: | 390
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Número: | 6
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Página de inicio: | 1026
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Página de fin: | 1032
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DOI: |
http://dx.doi.org/10.1016/j.physa.2010.11.040 |
Título revista: | Physica A: Statistical Mechanics and its Applications
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Título revista abreviado: | Phys A Stat Mech Appl
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ISSN: | 03784371
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CODEN: | PHYAD
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03784371_v390_n6_p1026_Despsito |
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Citas:
---------- APA ----------
Despsito, M.A., Pallavicini, C., Levi, V. & Bruno, L.
(2011)
. Active transport in complex media: Relationship between persistence and superdiffusion. Physica A: Statistical Mechanics and its Applications, 390(6), 1026-1032.
http://dx.doi.org/10.1016/j.physa.2010.11.040---------- CHICAGO ----------
Despsito, M.A., Pallavicini, C., Levi, V., Bruno, L.
"Active transport in complex media: Relationship between persistence and superdiffusion"
. Physica A: Statistical Mechanics and its Applications 390, no. 6
(2011) : 1026-1032.
http://dx.doi.org/10.1016/j.physa.2010.11.040---------- MLA ----------
Despsito, M.A., Pallavicini, C., Levi, V., Bruno, L.
"Active transport in complex media: Relationship between persistence and superdiffusion"
. Physica A: Statistical Mechanics and its Applications, vol. 390, no. 6, 2011, pp. 1026-1032.
http://dx.doi.org/10.1016/j.physa.2010.11.040---------- VANCOUVER ----------
Despsito, M.A., Pallavicini, C., Levi, V., Bruno, L. Active transport in complex media: Relationship between persistence and superdiffusion. Phys A Stat Mech Appl. 2011;390(6):1026-1032.
http://dx.doi.org/10.1016/j.physa.2010.11.040