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Universitas Psychologica
versão impressa ISSN 1657-9267
Resumo
MARTINEZ, GLADYS S.. Circadian Regulation of Behavior: Differences between Diurnal and Nocturnal Species. Univ. Psychol. [online]. 2009, vol.8, n.2, pp.487-496. ISSN 1657-9267.
Most organisms, including humans, show daily rhythms of about 24 hours in physiology, hormonal function, and behavior. In mammals, these rhythms are controlled by an endogenous circadian pacemaker localized in the su-prachiasmatic nucleus (SCN) of the hypothalamus that determines the temporal organization of several behaviors and physiological processes. Circadian control of daily rhythms differs in diurnal and nocturnal species but many of the mechanisms that may explain these differences remain still unknown. The aim of this review is to summarize our current knowledge of the circadian clocks and the differences between diurnal and nocturnal species.
Palavras-chave : Circadian Rhythms; Diurnal Species; Nocturnal Species; Species Differences; Animal Circadian Rhythms; Human Biological Rhythms; Species Differences.