{"id":1022,"date":"2016-10-22T01:45:51","date_gmt":"2016-10-22T01:45:51","guid":{"rendered":"http:\/\/101psych.com\/?p=1022"},"modified":"2016-10-22T01:45:51","modified_gmt":"2016-10-22T01:45:51","slug":"melatonin-sad-and-the-circadian-rhythm","status":"publish","type":"post","link":"https:\/\/www.themantic-education.com\/ibpsych\/2016\/10\/22\/melatonin-sad-and-the-circadian-rhythm\/","title":{"rendered":"Melatonin, SAD and the Circadian Rhythm"},"content":{"rendered":"

Melatonin and SAD<\/strong><\/p>\n

Here’s a video that defines SAD and gives some symptoms of this disorder. If you are to explain how melatonin can cause SAD, you need to know the symptoms. This is also applicable to the GLT that focuses on how our environment can affect our physiology and how that can in turn affect our behaviour.\u00a0<\/em><\/p>\n[youtube https:\/\/www.youtube.com\/watch?v=QVJYojGonxA]\n

Here is a link to Avery et al’s 2001 study regarding Melatonin and SAD patients:<\/p>\n[youtube http:\/\/www.youtube.com\/watch?v=EUyBDGgsk_I]\n

Find out more about your circadian rhythm here<\/a>.<\/p>\n

Here’s another study <\/a>that shows correlations between giving melatonin to patients with depression and their reduced symptoms. However, it may be difficult to find the connection between this research and how it demonstrates the role of melatonin in regulating circadian rhythm.<\/p>\n

Explanation of Implications of Avery’s Study –\u00a0<\/strong>usually I don’t explain research for you, but this has been done to help you understand the difficult connections between this study and the learning target.\u00a0<\/em><\/p>\n

Melatonin\u2019s function is to regulate our circadian rhythm (our sleep-wake cycle). During winter months, we have to wake-up and it\u2019s still dark we may be waking up with high levels of melatonin, which may lead to symptoms of\u00a0SAD. SAD is more common in the further northern and southern hemisphere countries because their winter nights are longer. One reason for this may be because our modern lifestyles are not in tune with the natural cycle of sunlight in nature, which upsets our melatonin balance.<\/p>\n

Melatonin is secreted when nighttime occurs and it gets our body ready for rest. As the sun rises, our melatonin levels are reduced so by the time we wake up, our body is ready to face the day.<\/p>\n

Avery’s study<\/a> showed that a gradual light coming on at 4:30am until 6am reduced the symptoms of SAD more than placebo and bright light groups.<\/p>\n

This may be because the melatonin levels were gradually decreasing as the light grew brighter, and so when the participants awoke their melatonin levels were low (as they should be in the morning when we wake).<\/p>\n

The reduced SAD symptoms shows that the melatonin levels may have been reduced by the gradual light that simulated dawn so that when participants awoke their bodies were ready to be active. The results show that one function\u00a0of melatonin is to regulate our body clock so that when the sun comes up the levels are reduced and we are ready to be awake and active.<\/p>\n","protected":false},"excerpt":{"rendered":"

Melatonin and SAD Here’s a video that defines SAD and gives some symptoms of this disorder. If you are to explain how melatonin can cause SAD, you need to know the symptoms. This is also applicable to the GLT that focuses on how our environment can affect our physiology and how that can in turn affect our behaviour.\u00a0 [youtube https:\/\/www.youtube.com\/watch?v=QVJYojGonxA] … <\/p>\n

Read More<\/a><\/div>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1022","post","type-post","status-publish","format-standard","hentry","category-biological-psychology","no-post-thumbnail"],"yoast_head":"\nMelatonin, SAD and the Circadian Rhythm | The IB Psychology Blog<\/title>\n<meta name=\"description\" content=\"Discover the connection between melatonin and seasonal affective disorder (SAD) through Avery's study, showing its role in regulating our circadian rhythm.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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Ketamine is one antagonists of the receptor sites of the neurotransmitter, glutamate. In this post we'll learn more about antagonists, how they\u2026","rel":"","context":"In "Abnormal Psychology"","block_context":{"text":"Abnormal Psychology","link":"https:\/\/www.themantic-education.com\/ibpsych\/category\/abnormal-psychology\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/10\/bigstock-The-Text-Ptsd-Written-On-A-Cli-268734454.jpg?fit=900%2C596&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/10\/bigstock-The-Text-Ptsd-Written-On-A-Cli-268734454.jpg?fit=900%2C596&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/10\/bigstock-The-Text-Ptsd-Written-On-A-Cli-268734454.jpg?fit=900%2C596&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/10\/bigstock-The-Text-Ptsd-Written-On-A-Cli-268734454.jpg?fit=900%2C596&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":1118,"url":"https:\/\/www.themantic-education.com\/ibpsych\/2019\/04\/02\/rosenhans-observation\/","url_meta":{"origin":1022,"position":4},"title":"Key study: “On being sane in insane place” (Rosenhan, 1973)","author":"Travis Dixon","date":"04\/02\/2019","format":false,"excerpt":"Rosenhan's famous study attempted to demonstrate the unreliable nature of psychiatric diagnosis in the 1970s and how poorly patients were treated in psychiatric hospitals. While his methods were a little suspect, the study seemed to make the point Rosenhan was hoping for.\u00a0 Background Information One of the most influential studies\u2026","rel":"","context":"In "Abnormal Psychology"","block_context":{"text":"Abnormal Psychology","link":"https:\/\/www.themantic-education.com\/ibpsych\/category\/abnormal-psychology\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/04\/Ararat_Lunatic_Asylum_-_Aradale_Psychiatric_Hospital.jpg?fit=1200%2C781&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/04\/Ararat_Lunatic_Asylum_-_Aradale_Psychiatric_Hospital.jpg?fit=1200%2C781&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/04\/Ararat_Lunatic_Asylum_-_Aradale_Psychiatric_Hospital.jpg?fit=1200%2C781&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/04\/Ararat_Lunatic_Asylum_-_Aradale_Psychiatric_Hospital.jpg?fit=1200%2C781&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2019\/04\/Ararat_Lunatic_Asylum_-_Aradale_Psychiatric_Hospital.jpg?fit=1200%2C781&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":10132,"url":"https:\/\/www.themantic-education.com\/ibpsych\/2017\/11\/01\/clinical-drug-trials-ptsd-and-ssris\/","url_meta":{"origin":1022,"position":5},"title":"Clinical Drug Trials, PTSD and SSRIs","author":"Travis Dixon","date":"11\/01\/2017","format":false,"excerpt":"This post is designed to be used in lesson 4.6 in the PTSD unit plan. In order to evaluate the effectiveness of drug therapy using selective serotonin reuptake inhibitors (SSRIs) to treat PTSD, we need to consult the research. The most common way the effectiveness of drugs are tested is\u2026","rel":"","context":"In "Abnormal Psychology"","block_context":{"text":"Abnormal Psychology","link":"https:\/\/www.themantic-education.com\/ibpsych\/category\/abnormal-psychology\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2017\/11\/bigstock-173480549.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2017\/11\/bigstock-173480549.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2017\/11\/bigstock-173480549.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2017\/11\/bigstock-173480549.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.themantic-education.com\/ibpsych\/wp-content\/uploads\/sites\/3\/2017\/11\/bigstock-173480549.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/posts\/1022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/comments?post=1022"}],"version-history":[{"count":0,"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/posts\/1022\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/media?parent=1022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/categories?post=1022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.themantic-education.com\/ibpsych\/wp-json\/wp\/v2\/tags?post=1022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}