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Background/objective
During adolescence, chronotype shifts toward “eveningness.” “Eveningness” is related to negative physical and mental health outcomes. Little is known about what influences the shift in chronotype beyond pubertal status. The current study examined the influence of earlier depression predicting later individual differences in adolescent chronotype, accounting for pubertal status,...
Serotonin (5‐HT) neurons have been implicated in the modulation of many physiological functions, including mood regulation, feeding, and sleep. Impaired or altered 5‐HT neurotransmission appears to be involved in depression and anxiety symptoms, as well as in sleep disorders. To investigate brain 5‐HT functions in sleep, we induced 5‐HT deficiency through acute tryptophan depletion in rats by intraperitoneally...
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