The effect of sampling rate on observed statistics in a correlated random walk.

ABSTRACT: Tracking the movement of individual cells or animals can provide important information about their motile behaviour, with key examples including migrating birds, foraging mammals and bacterial chemotaxis. In many experimental protocols, observations are recorded with a fixed sampling interval and the continuous underlying motion is approximated as a series of discrete steps. The size of the sampling interval significantly affects the tracking measurements, the statistics computed from observed trajectories, and the inferences drawn. Despite the widespread use of tracking data to investigate motile behaviour, many open questions remain about these effects. We use a correlated random walk model to study the variation with sampling interval of two key quantities of interest: apparent speed an

SUBMITTER: Rosser G 

PROVIDER: S-EPMC4043159 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature