Circadian Rhythms in Drinking Behavior and Locomotor Activity of Rats Are Eliminated by Hypothalamic Lesions | Zendy

Friedrich K. Stephan | Zendy; Irving H. Zucker | Zendy

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Circadian Rhythms in Drinking Behavior and Locomotor Activity of Rats Are Eliminated by Hypothalamic Lesions

Author(s) -

Friedrich K. Stephan,

Irving H. Zucker

Publication year - 1972

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.69.6.1583

Subject(s) - circadian rhythm , entrainment (biomusicology) , rhythm , light effects on circadian rhythm , locomotor activity , nocturnal , hypothalamus , biology , neuroscience , endocrinology , medicine , suprachiasmatic nucleus

Bilateral electrolytic lesions in the suprachiasmatic nuclei permanently eliminated nocturnal and circadian rhythms in drinking behavior and locomotor activity of albino rats. The generation of 24-hr behavioral rhythms and the entrainment of these rhythms to the light-dark cycle of environmental illumination may be coordinated by neurons in the suprachiasmatic region of the rat brain. Destruction of the medial preoptic area had no effect on 24-hr drinking rhythms.

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