nucleus

(redirected from Suprachiasmatic nucleus)
Also found in: Dictionary, Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
Related to Suprachiasmatic nucleus: pineal gland
References in periodicals archive ?
The suprachiasmatic nucleus (SCN) of the anterior hypothalamus is implicated in the temporal organization of circadian rhythms in a variety of physiological, endocrine and behavioral processes.
With endosulfan, substantial neurodegeneration was present in ventral telencephalic regions such as the entopeduncular nucleus (e; Figure 2e) plus the diencephalic suprachiasmatic nucleus (NSC; Figure 2f) and the medial part of lateral tuberal nucleus (NLTm; Figure 2g).
Many of light's health effects stem from its ability to influence circadian rhythms, 24-hour oscillations in neural activity controlled by a "master biological clock" located in the suprachiasmatic nucleus (SCN) of the hypothalamus.
The clock, which is located in the brain in the suprachiasmatic nucleus of the hypothalamus, programs daily cyclic changes in the body, thereby creating two distinct periods, a biological day and a biological night.
Called the suprachiasmatic nucleus, this timing system fluctuates over a 24-hour period and regulates functions both basic and complex, including the secretion of hormones and the ability to learn and remember.
According to researchers at Flinders University in Adelaide, exposure to light from the glasses alters the hormones released by the suprachiasmatic nucleus gland.
Transplanted suprachiasmatic nucleus determines circadian period.
The report, titled ''Entrainment of the Circadian Clock in the Liver by Feeding,'' said the researchers aimed at investigating ''the effects of cycles of food availability on the rhythms of gene expression in the liver, lung and suprachiasmatic nucleus.
Three animals who were then exposed to 45 minutes of bright light at night exhibited increased activity in the suprachiasmatic nucleus, a brain structure that generates circadian rhythms; they also displayed elevated concentrations of a protein manufactured by the suprachiasmatic nucleus.
The master circadian clock in mammals is a knot of 20,000 nerve cells roughly a quarter the size of a grain of rice called the suprachiasmatic nucleus (SCN).
Although Alzheimer's disease (AD) is the most common cause of dementia, it can be caused by various diseases which can damange the suprachiasmatic nucleus (SCN).