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A circadian rhythm is an entrainable, endogenous, biological activity that has a period of roughly twenty-four hours. This internal time-keeping mechanism is centralized in the suprachiasmatic nucleus (SCN) of humans, and allows for the internal physiological mechanisms underlying sleep and alertness to become synchronized to external environmental cues, like the light-dark cycle. [4]
A circadian rhythm (/ s ər ˈ k eɪ d i ə n /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours. Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous ) and responds to the environment (is entrained by the environment).
Sleeping sickness – a parasitic disease which can be transmitted by the Tsetse fly. Jet lag disorder – Jet lag disorder is a type of circadian rhythm sleep disorder that results from rapid travel across multiple time zones. Individuals experiencing jet lag may encounter symptoms such as excessive sleepiness, fatigue, insomnia, irritability ...
These variants occur near genes known to be important in photoreception and circadian rhythms. [37] The variant most strongly associated with chronotype occurs near RGS16, which is a regulator of G-protein signalling and has a known role in circadian rhythms. In mice, gene ablation of Rgs16 lengthens the circadian period of behavioural rhythm.
GBS disease Group B Streptococcal disease: GCE Glycine encephalopathy: GD Gestational diabetes: GERD Gastroesophageal reflux disease: GI Gastrointestinal: GIB Gastrointestinal bleeding: GN Glossopharyngeal neuralgia: GORD Gastro-oesophageal reflux disease: GSS disease Gerstmann–Sträussler–Scheinker disease: GT/LD Gifted and learning ...
chronic granulomatous disease: CGI: Clinical global impression (including subscales such as CGI-BP, CGI-C, CGI-E, CGI-I, CGI-S) cGMP: cyclic guanosine monophosphate: CGN: chronic glomerulonephritis: CH: congenital hypothyroidism: CHC: combined hormonal contraceptive: CHD: chronic heart disease congenital heart defect coronary heart disease: ChE ...
Delayed sleep phase disorder (DSPD), more often known as delayed sleep phase syndrome and also as delayed sleep–wake phase disorder, is the delaying of a person's circadian rhythm (biological clock) compared to those of societal norms.
This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). There is disagreement over the definitions and criteria used to delineate various disorders and whether some of these conditions should be classified as ...