Circadian behavior of longdaysin- and NCC007-treated mice. Mice were treated with compounds and their circadian behavior was recorded by infrared sensor under constant dark condition. (A) HBSS, 1 mM longdaysin, 5 mM longdaysin, and 5 mM NCC007 were sequentially infused into mouse brain. (B) HBSS, 3 mM longdaysin, 15 mM longdaysin, and 15 mM NCC007 were sequentially infused. (C) DMSO infusion as the negative control. The number in parentheses indicates the number of mice. ***p < 0.001, **p < 0.01 against the DMSO control by two-way analysis of variance, followed by a Tukey’s multiple comparisons test.