Comparisons of behavior organization parameters.

: mean duration of resting periods, : mean duration of active periods, : mean scaling exponent of rescaled cumulative distributions of resting periods, : mean stretching exponent of rescaled cumulative distributions of active periods. The values, where non-zero mean is used as a threshold value, are shown as mean ± SEM.*indicates the significant difference from WT mice (Tukey post-hoc test with Sidak adjustment for the multiple comparison, pPer2 mutatnt mice are reproduced from our recent study [10].