Response to Comment by Destainville et al.

Abstract

Identifying potential sources of artifactual anomalous diffusion is an important contribution, particularly in the case of transient anomalous subdiffusion. Martin et al. (1), for example, showed that noise in single-particle tracking (SPT) measurements can lead to a period of spurious anomalous subdiffusion. This work originated from experimental evidence of anomalous subdiffusion in a system for which diffusion ought to have been purely normal. In their Comment, Destainville et al. (2) point out that a period of spurious anomalous diffusion can result from the transition between two limiting cases, normal diffusion within a corral (or a cage in three dimensions) at short times, and normal hop diffusion among corrals at long times. (For a review of anomalous diffusion see Metzler and Klafter (3) and for a discussion in a biological context see Condamin et al. (4).)