{"id":469,"date":"2015-04-13T15:06:53","date_gmt":"2015-04-13T15:06:53","guid":{"rendered":"http:\/\/www.blog-thebrain.org\/?p=1002"},"modified":"2022-01-04T19:50:27","modified_gmt":"2022-01-04T19:50:27","slug":"1002","status":"publish","type":"post","link":"https:\/\/www.blog-thebrain.org\/advanced\/2015\/04\/13\/1002\/","title":{"rendered":"Recent Studies on the Role of Sleep"},"content":{"rendered":"<p><img decoding=\"async\" loading=\"lazy\" class=\"alignleft size-full wp-image-3546\" title=\"rever\" src=\"https:\/\/www.blog-lecerveau.org\/wp-content\/uploads\/rever1.jpg\" alt=\"\" width=\"118\" height=\"110\" \/><\/p>\n<p>As Evan Thompson, a philosopher of biology and the mind, stated in a recent lecture, our Western way of life is so focused on productivity as a dominant value that when we go to bed, we are so exhausted that we literally \u201ccrash\u201d into sleep. As a result, we very often do not even experience the special state of consciousness known as hypnagogia, which normally occurs during the first phase of falling asleep. When someone is in this state, they are still sensitive to sensory inputs from the outside world, but no longer entirely awake, and they are more likely to make all sorts of original mental associations.<\/p>\n<p>In addition to watching Thompson\u2019s lecture (see first link below), you may want to read<em> Waking, Dreaming Being<\/em> (the book on which the lecture is based, published in 2014), or his earlier, very rewarding book, <a href=\"https:\/\/www.blog-thebrain.org\/blog\/2014\/01\/20\/mind-in-life\/\"><span style=\"color: #008080;\"><em>Mind in Life<\/em><\/span><\/a> (2007).<!--more--><\/p>\n<p>And if you want to dig a little deeper into the question of the <span style=\"color: #ff9900;\"><a href=\"https:\/\/www.thebrain.mcgill.ca\/flash\/d\/d_11\/d_11_cr\/d_11_cr_cyc\/d_11_cr_cyc.html#2\"><span style=\"color: #ff9900;\">brain structures associated with sleep<\/span><\/a><\/span>, the third link below points to a study published in February 2014, about a controversy that Thompson discusses in <em>Waking, Dreaming, Being<\/em>. This study showed that people who frequently recall their <a href=\"https:\/\/www.thebrain.mcgill.ca\/flash\/d\/d_11\/d_11_p\/d_11_p_cyc\/d_11_p_cyc.html#3\"><span style=\"color: #ff9900;\">dreams<\/span><\/a> have different resting brain activity patterns from people who do not. This finding tends to confirm the hypothesis that there is a system in the prefrontal area of the human brain that contributes to dreaming and whose activity is distinct from that of the region of the pons that stimulates the cortex, which is still the prevailing hypothesis on this subject.<\/p>\n<p>Another interesting sleep study was reported in <em>Science <\/em>magazine in June 2014. This study confirmed the <span style=\"color: #008080;\"><a href=\"https:\/\/www.thebrain.mcgill.ca\/flash\/capsules\/outil_bleu23.html\"><span style=\"color: #008080;\">role of sleep<\/span><\/a> <\/span>in the structural consolidation of interneuronal connections after learning has occurred. More specifically, this study of the motor cortex of mice showed how <span style=\"color: #ff9900;\"><a href=\"https:\/\/www.thebrain.mcgill.ca\/flash\/d\/d_11\/d_11_p\/d_11_p_cyc\/d_11_p_cyc.html\"><span style=\"color: #ff9900;\">sleep<\/span><\/a><\/span> promotes the formation of postsynaptic dendritic spines on a subset of dendritic branches of individual layer V pyramidal neurons. These results clearly imply that sleep plays a role in memory.<\/p>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=IZyJODW4lQs\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #008080;\"><img decoding=\"async\" loading=\"lazy\" style=\"border: 0pt;\" src=\"https:\/\/www.blog-lecerveau.org\/wp-content\/uploads\/i_lien.gif\" alt=\"i_lien\" width=\"15\" height=\"15\" \/> Evan Thompson: \u201cWaking, Dreaming, Being\u201d at CIIS<\/span><\/a><br \/>\n<a href=\"http:\/\/evanthompson.me\/waking-dreaming-being\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #008080;\"><img decoding=\"async\" loading=\"lazy\" style=\"border: 0pt;\" src=\"https:\/\/www.blog-lecerveau.org\/wp-content\/uploads\/i_lien.gif\" alt=\"i_lien\" width=\"15\" height=\"15\" \/> Waking, Dreaming, Being<\/span><\/a><br \/>\n<a href=\"http:\/\/www.nature.com\/npp\/journal\/v39\/n7\/abs\/npp20146a.html\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" style=\"border: 0pt;\" src=\"https:\/\/www.blog-lecerveau.org\/wp-content\/uploads\/a_exp.gif\" alt=\"a_exp\" width=\"15\" height=\"15\" \/> <span style=\"color: #ff0000;\">Resting Brain Activity Varies with Dream Recall Frequency Between Subjects<\/span><\/a><br \/>\n<a href=\"https:\/\/www.sciencemag.org\/content\/344\/6188\/1173?related-urls=yes&amp;legid=sci;344\/6188\/1173\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" style=\"border: 0pt;\" src=\"https:\/\/www.blog-lecerveau.org\/wp-content\/uploads\/a_exp.gif\" alt=\"a_exp\" width=\"15\" height=\"15\" \/> <span style=\"color: #ff0000;\">Sleep promotes branch-specific formation of dendritic spines after learning<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As Evan Thompson, a philosopher of biology and the mind, stated in a recent lecture, our Western way of life is so focused on productivity as a dominant value that when we go to bed, we are so exhausted that we literally \u201ccrash\u201d into sleep. As a result, we very often do not even experience [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[233,234,235],"_links":{"self":[{"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/posts\/469"}],"collection":[{"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/comments?post=469"}],"version-history":[{"count":5,"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/posts\/469\/revisions"}],"predecessor-version":[{"id":954,"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/posts\/469\/revisions\/954"}],"wp:attachment":[{"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/media?parent=469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/categories?post=469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.blog-thebrain.org\/advanced\/wp-json\/wp\/v2\/tags?post=469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}