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. 2022 Feb 16;13:821199. doi: 10.3389/fphys.2022.821199

FIGURE 1.

FIGURE 1

Behavioral rhythms in the SJL condition during ND feeding. (A) Typical double-plot actogram of behavior measured by infrared sensor during one week of rearing under the normal LD condition (days 1–7) and one week of rearing under the SJL condition (days 8–14). On days 8 and 9, which are Saturdays and Sundays, the LD conditions were set back by 6 h. (B) Double-plot actogram of behavioral rhythms measured with a wheel-running device on a similar schedule. (C) Activity onset time was calculated from the daily activity rhythms and averaged per group. Saturdays and Sundays with different start of the dark period are indicated by black marks. Data are presented as mean ± standard error of the mean (ND-No-Wheel, n = 5; ND-Wheel, n = 9). (D) Difference between mean activity onset time during the first half of the week (day 1–7) and activity onset time during the SJL condition (day 8–14). *p < 0.05, ***p < 0.001 (t-test).