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Sleep-wake cycle and the body clock Damage to the hypothalamus or the hypothalamic function, whether congenital or acquired, may cause significant health issues. What are the causes of hypothalamic dysfunction? There are several causes of hypothalamic dysfunction, which include: Surgery Head injury Tum...
Sleep-Wake Cycle Regulation Hypothalamus: Location Read More Diencephalon Section of the Brain By Regina Bailey Directionally, the hypothalamus is found in thediencephalon. It is inferior to thethalamus, posterior to the optic chiasm, and bordered on the sides by thetemporal lobesand optic tracts. ...
Despite its small size of roughly 0.3% of the brain volume, it controls vital body functions including body temperature, blood circulation, food intake, fluid and electrolyte balance, the sleep-wake cycle, metabolism and sexual behaviour. This article will discuss the anatomy and functions of the...
Interestingly, the activity of wake-promoting orexin neurons in the lateral hypothalamus (LH), a brain area involved in sleep/wake cycle control, increases during wakefulness, and decreases during sleep. While exploratory in vitro studies showed the excitatory effect of lactate on orexinergic activity...
These results have suggested that the subcortical neuronal assemblies have indeed a governing role in the EEG and behavioral changes during the sleep/wake cycle. However, within the NREM sleep period, robust dynamical changes take place, about which the flip-flop model has nothing to say about. ...
Thehypothalamusplays a key role in regulation of endocrine (pituitary function), metabolic (food intake, energy balance, and water metabolism), and nonendocrine (body temperature, sleep/wake cycle) functions. Diseases involving the hypothalamus give rise to variable associations of endocrine, metabolic...
as fear and rage, and in sexual behaviors. Despite its numerous vital functions, the hypothalamus in humans accounts for only 1-300 of total brain weight, and is about the size of an almond. Structurally, it is joined to thethalamus; the two work together to monitor the sleep-wake cycle...
G. Connexin 43-mediated astroglial metabolic networks contribute to the regulation of the sleep-wake cycle. Neuron 95, 1365–1380 (2017). Article PubMed PubMed Central CAS Google Scholar Langlet, F. et al. Tanycytic VEGF-A boosts blood-hypothalamus barrier plasticity and access of metabolic...
and time of day. The suprachiasmatic nucleus maintains this sense of time and sends outputs to various regions of the brain to control activity levels, alertness, drowsiness, hunger, and body temperature. The end result of these outputs is the development of a sleep/wake cycle that remains ...