Figure 5.

(A) Time course of rest episode duration across the light period. Mean values (n = 7, SEM) are shown as dark red symbols. (B) Time course of rest episode number across the light period. Mean values (n = 7, SEM) are shown as dark red symbols. The values are expressed as percentage of mean across the entire day. The curves for individual animals are shown in grey lines. (C) Survival analysis of inactivity (rest) episodes shown for 3-h intervals across the day. Note that rest episodes “survive” for longer at the beginning of the day, then their duration drops and tends to increase again in the second half of the light period. Mean values, SEM, n = 7. (D) The relationship between ambient temperature and rest episode duration during the day. All rest episodes during the day are grouped according to the ambient temperature at the time of their occurrence. Note that at warmer temperatures the rest episodes tend to be longer. (E) The relationship between change in ambient temperature within sustained rest episodes and their duration. All rest episodes are grouped according to the magnitude of change in temperature, and the corresponding values are averaged. Note that rest episodes tend to be longer if the temperature is decreasing or increasing, but remain short if the temperature is stable. Mean values, n = 7, SEM.