Table 1.
Schedule of the experimental protocol for selective breeding and behavioral testing.
Table 2.
Parameters used to describe motor activity (a) and body temperature (b).
Fig 1.
A sample Poincaré plot analysis of temperature time series derived from a 12-h recording during dark phase from a control rat.
The dashed line is the identity line; all points on this line correspond to two neighboring temperatures with equal values; all points above this line correspond to BT increases (BTn+1>BTn); all points below this line correspond to BT reductions (BTn+1<BTn). BTn: BT of the current value, BTn+1: BT of the next value. SD1: the standard deviation quantifying the dispersion of points in the Poincaré plot across the identity line. SD2 represents the dispersion along the identity line.
Fig 2.
Motor activity parameters in undisturbed circumstances during light and dark phases.
Mean AL (activity level; A), MI (movement index; B), RMI (relative movement index; C), PN (phase number; D), PL (phase length; E) with duration of uninterrupted immobility (DI) or active (DA) period. * p<0.05 between groups; # <0.05 between the day cycles; x p <0.05 between the DI and DA. Data are presented as means ± SEM.
Fig 3.
Body temperature parameters in undisturbed circumstances during light and dark phases.
The mean values of BT minimum (A), BT maximum (B), BT amplitudes (C), and the mean of changes in BT between two consecutive data points (D). * p <0.05 between groups; # p <0.05 between the day cycles; x p <0.05 between the BT decreases and increases. Data are presented as means ± SEM.
Fig 4.
BT (A) and motor activity (B) alterations during the light-phase changes for an hour. BT (C) and motor activity (D) changes after interventions for two hours. ↑ signs the beginning of changes in light condition or the interventions. * p <0.05 between groups; # p <0.05 compared to baseline. Data are presented as means ± SEM.
Table 3.
The short- and long-term asymmetries of body temperature.
Fig 5.
Poincaré plot analysis of body temperature in undisturbed circumstances during light and dark phases.
Changes in SD1 (A) and SD2 (B). * p <0.05 between groups; # p <0.05 between the day cycles. Data are presented as means ± SEM.