This review emphasizes the fact that the nervous system components governing circadian rhythmicity constitute a specialized subdivision of the vertebrate visual system.
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circadian visual system
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The nervous system components governing circadian rhythmicity constitute a specialized subdivision of the vertebrate visual system.
A phasically active stimulus induces c-Fos protein synthesis in the circadian visual system but not in the non-circadian visual system.
The suprachiasmatic nucleus is necessary for the generation of circadian rhythmicity, but precise phase regulation of rhythms is modulated by afferent processes to the suprachiasmatic nucleus.
Blockade of suprachiasmatic nucleus action potentials is unable to alter circadian rhythmicity.
Transplantation of dispersed fetal suprachiasmatic nucleus cells to arrhythmic adults restores circadian periodicity but not phase response to light.