Abstract
Most of our behavioral and physiological activities are modulated or regulated by endogenous clocks, chief among them the circadian (i.e., about a day) clock. Optimally located in the suprachiasmatic nuclei (SCN) of the anterior hypothalamus [1, 2], the circadian pacemaker in the SCN receives light information via the retinohypothalamic tract [3] directly from the retina's classical and nonclassical photoreceptors [4-6].
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CITATION STYLE
Cajochen, C., Chellappa, S. L., & Schmidt, C. (2014). Circadian and light effects on human sleepiness-alertness. In Sleepiness and human impact assessment (Vol. 9788847053885, pp. 9–22). Springer-Verlag Italia s.r.l. https://doi.org/10.1007/978-88-470-5388-5_2
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