Statistical tests for the significance of the power-law property in the distributions of rest and activity bouts according to the method of Clauset et al. [20].

All the tests were separately conducted for the data obtained from individual flies. The mean statistical values for different flies are shown in the table. For each empirical distribution, we calculated the p′-value for the best power-law fit and likelihood ratios (LRs) of the power-law distribution to alternative distributions. We used the exponential distribution and the log-normal distribution as the alternative distributions. Positive values of the log likelihood ratio with p