{"version":"1.0","provider_name":"Games Learning Society","provider_url":"https:\/\/www.gameslearningsociety.org\/wiki","author_name":"GLS Team","author_url":"https:\/\/www.gameslearningsociety.org\/wiki\/author\/gls-team\/","title":"What is the first night effect? - Games Learning Society","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"0o6AWLzYWB\"><a href=\"https:\/\/www.gameslearningsociety.org\/wiki\/what-is-the-first-night-effect\/\">What is the first night effect?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.gameslearningsociety.org\/wiki\/what-is-the-first-night-effect\/embed\/#?secret=0o6AWLzYWB\" width=\"600\" height=\"338\" title=\"&#8220;What is the first night effect?&#8221; &#8212; Games Learning Society\" data-secret=\"0o6AWLzYWB\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.gameslearningsociety.org\/wiki\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"What is the First Night Effect? The first night effect is a well-known phenomenon in polysomnographic (PSG) recordings characterized by decreased total sleep time, lower sleep efficiencies, reduction in REM sleep, and longer REM latencies on the first night of testing, which is often attributed to the brain&#8217;s natural self-defense mechanism that keeps one hemisphere ... Read more","thumbnail_url":"https:\/\/www.gameslearningsociety.org\/wiki\/wp-content\/uploads\/2025\/02\/gls-featured.png","thumbnail_width":1200,"thumbnail_height":630}