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Figure 2


Fig. 2. Distributions of voluntary running behavior in 40 Mongolian gerbils, each measured over ~23.5 h. Data are 1-min averages separated by 3-min gaps (to avoid autocorrelation; see text). (A) Frequency distribution of time spent running at various speeds. (B) Distance traveled at various speeds. The bin size is 0.1 km h–1 for both.