Nucleus-specific effects of meal duration on daily profiles of Period1 and Period2 protein expression in rats housed under restricted feeding

▶1.RF schedules that provide a 2 h meal/day induce more food-anticipatory activity than those that provide a 6 h meal/day. ▶2.Both RF schedules induce synchronous anticipatory activity, but rhythms of PER1 in the DMH are differentially affected. ▶3.The rhythms of PER2 expression in the BNSTov and CEA have higher amplitude in response to 2hRF than 6hRF. ▶4.The rhythms of PER2 expression in the BLA and DG are similarly affected by 2hRF and 6hRF. ▶5.The rhythm of PER2 expression in the SCN is unaffected by either RF schedule.