Guidelines for the fitting of anomalous diffusion mean square displacement graphs from single particle tracking experiments.
Guidelines for the fitting of anomalous diffusion mean square displacement graphs from single particle tracking experiments.
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DOI:
10.1371/journal.pone.0117722
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Garini Y
中科院分区:
文献类型:
--
作者:
Kepten E;Weron A;Sikora G;Burnecki K;Garini Y
Single particle tracking is an essential tool in the study of complex systems and biophysics and it is commonly analyzed by the time-averaged mean square displacement (MSD) of the diffusive trajectories. However, past work has shown that MSDs are susceptible to significant errors and biases, preventing the comparison and assessment of experimental studies. Here, we attempt to extract practical guidelines for the estimation of anomalous time averaged MSDs through the simulation of multiple scenarios with fractional Brownian motion as a representative of a large class of fractional ergodic processes. We extract the precision and accuracy of the fitted MSD for various anomalous exponents and measurement errors with respect to measurement length and maximum time lags. Based on the calculated precision maps, we present guidelines to improve accuracy in single particle studies. Importantly, we find that in some experimental conditions, the time averaged MSD should not be used as an estimator.
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DOI:
10.1103/physreve.85.061916
发表时间:
2012-06
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
Michalet X;Berglund AJ
通讯作者:
Berglund AJ
DOI:
10.1088/1742-5468/2014/10/p10036
发表时间:
2014-10-01
影响因子:
2.4
作者:
Burnecki, Krzysztof;Weron, Aleksander
通讯作者:
Weron, Aleksander
影响因子:
2.4
作者:
Burnecki, Krzysztof;Weron, Aleksander
通讯作者:
Weron, Aleksander
影响因子:
3.4
作者:
Goulian, M;Simon, SM
通讯作者:
Simon, SM
影响因子:
2.4
作者:
Kepten, E.;Bronshtein, I.;Garini, Y.
通讯作者:
Garini, Y.