Figure 3

SPI serial correlation durations differ between species. (a–d) Average serial correlations for 120-second recordings of the discharge behaviour of C. compressirostris (a: resting, n = 17; c: active, n = 4) and C. tamandua (b: resting, n = 12; d: active, n = 2). Population averages are shown with SEM (dark grey) and STD (light grey). The red line depicts the chance level (at a type I error rate of p = 0.01) at which serial correlations could be found in the respective datasets. (e) Same as (a–d), but for the artificial (scrambled) SPIs (n = 6). (f) Distribution of average serial correlation durations. Stars (*) represent significance. comp = C. compressirostris; tam = C. tamandua.