Sleep-wake cycle: Difference between revisions

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===After waking===

*Exposure to blue light frequencies mainly between 460 and 480nm trigger [[melanopsin]] cells in the eyes to send a signal to the suprachiasmatic nucleus (SCN) which sends [[GABA]] to the pineal gland, inhibiting it from releasing melatonin causing levels to decline.

*Exposure to blue light frequencies mainly between 460 and 480nm trigger [[melanopsin]] cells in the eyes to send a signal to the suprachiasmatic nucleus (SCN) which sends [[GABA]] to the [[pineal gland]], inhibiting it from releasing melatonin thereby causing levels to decline.

*~~Hunger~~ built up ~~from fasting during~~ sleep ~~promotes eating, leptin levels rise as~~ stomach is ~~stretched. Leptin now uninhibited by melatonin~~, ~~allows the human~~ to ~~feel satiated from doing so by inhibiting orexin~~.

*Ghrelin has built up since the food eaten before sleep has been metabolised and the stomach is empty, this induces hunger thereby causing one to eat. <ref> http://www.ncbi.nlm.nih.gov/gene/51738 | ghrelin and obestatin prepropeptide [ Homo sapiens (human) ]</ref>

*~~Meanwhile~~ ATP from the food is metabolized into adenosine which begins to accumulate around the adenosine receptors. <ref>http://thebrain.mcgill.ca/flash/a/a_11/a_11_m/a_11_m_cyc/a_11_m_cyc.html | MOLECULES THAT BUILD UP AND MAKE YOU SLEEP</ref>

*ATP from the food is metabolized into adenosine which begins to accumulate around the adenosine receptors. <ref>http://thebrain.mcgill.ca/flash/a/a_11/a_11_m/a_11_m_cyc/a_11_m_cyc.html | MOLECULES THAT BUILD UP AND MAKE YOU SLEEP</ref>

===Approaching night===

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 ===After waking===
-*Exposure to blue light frequencies mainly between 460 and 480nm trigger [[melanopsin]] cells in the eyes to send a signal to the suprachiasmatic nucleus (SCN) which sends [[GABA]] to the pineal gland, inhibiting it from releasing melatonin causing levels to decline.
+*Exposure to blue light frequencies mainly between 460 and 480nm trigger [[melanopsin]] cells in the eyes to send a signal to the suprachiasmatic nucleus (SCN) which sends [[GABA]] to the [[pineal gland]], inhibiting it from releasing melatonin thereby causing levels to decline.
-*Hunger built up from fasting during sleep promotes eating, leptin levels rise as stomach is stretched. Leptin now uninhibited by melatonin, allows the human to feel satiated from doing so by inhibiting orexin.
+*Ghrelin has built up since the food eaten before sleep has been metabolised and the stomach is empty, this induces hunger thereby causing one to eat. <ref> http://www.ncbi.nlm.nih.gov/gene/51738 | ghrelin and obestatin prepropeptide [ Homo sapiens (human) ]</ref>
-*Meanwhile ATP from the food is metabolized into adenosine which begins to accumulate around the adenosine receptors. <ref>http://thebrain.mcgill.ca/flash/a/a_11/a_11_m/a_11_m_cyc/a_11_m_cyc.html | MOLECULES THAT BUILD UP AND MAKE YOU SLEEP</ref>
+*ATP from the food is metabolized into adenosine which begins to accumulate around the adenosine receptors. <ref>http://thebrain.mcgill.ca/flash/a/a_11/a_11_m/a_11_m_cyc/a_11_m_cyc.html | MOLECULES THAT BUILD UP AND MAKE YOU SLEEP</ref>
 ===Approaching night===