Fig. 2
From: Effect of temperature cycles on the sleep-like state in Hydra vulgaris
The sleep-like state response to temperature cycles. A-C Daily sleep profiles under DD with temperature cycles (A:20 °C/10 °C (n = 100), B:15 °C /10 °C (n = 38), C: 12 °C/10 °C (n = 18) represent mean ± SEM. Box plots represent sleep amount. D-F Box plots represent (D) Total sleep (n = 18–100, (E) number of sleep bouts (n = 18–99), (F) ABL (n = 18–99). n.s., not significant. *P < 0.05, ***P < 0.001 by Wilcoxon signed-rank sum test [A-C]. *P < 0.05, **P < 0.01 ***P < 0.001 by Kruskal–Wallis test followed by Mann–Whitney U test with Bonferroni correction [D-F] DD, constant darkness; TC, temperature cycles