Educational Script Reading for Listenable
Description
Vocal Characteristics
Language
EnglishVoice Age
Young Adult (18-35)Accents
North American (General)Transcript
Note: Transcripts are generated using speech recognition software and may contain errors.
Hey, I'm mash Newark robert, Welcome to the course. How sleep works on listenable lesson one circadian rhythms before we begin the conversation on sleep through the scientific lens that we will be using does contain a lot of complex language. The brain is complicated and the scientists that studied the brain decided to make the naming justice complex. We'll do our best to explain what the relevant pieces do. However, don't sweat memorizing every part of the brain that we discuss over the course of this. Well, of course, there's two processes involved in sleep process. S and process. See process esses sleep pressure, simply stating the longer that you stay awake. The sleepier you'll feel this is controlled by a neurotransmitter adenosine, which increases in the brain over the course of the day process, see is your circadian rhythm, also known as your circadian clock, or the circadian oscillator. This internal clock can be found in all mammals from elephants to dolphins to you and I. For us, this circadian clock is controlled by the super charismatic nucleus located within the hypothalamus of the brain. This biological clock is responsible for physiological processes including regulating body temperature, hormone, circulation, digestion, and of course, sleep more specifically, The circadian rhythm determines when you go to sleep. And this is a different person to person. The circadian rhythm determines for each person there, Krone type. In other words, the circadian rhythm determines whether you're a night owl sleeping later in the night around 11 PM or 12 AM or a lark sleeping earlier in the night, around 8 to 9 p.m. This has about a 45 minute leeway earlier or later. This krone type is determined completely by your genes. We know these genes. One of them is actually called the clock gene. These genes cannot be altered by changing your habits or forcing yourself to sleep at a different time relative to your circadian clock and attempting to do so will result in circadian misalignment. Discussed in a later lesson, the circadian rhythm is controlled mainly by temperature and light, which comes from evolution when primitive human beings relied on the sun as an indicator of when they wake up when they sleep and when they do whatever else primitive humans did like play, who can throw the rock further. This leads us to how the circadian rhythm actually relates to sleep. When you get close to your sleep time and darkness hits your retinas. The brain sends signals to your super charismatic nucleus. Where that circadian rhythm is that topples a bunch of dominoes. The penal gland produces melatonin, which is a hormone involved in feeling sleepy and initiating sleep. The pair of ventricular and sub para ventricular nucleus reduced cortisol levels, which is the main stress neurotransmitters. These areas also produce acute inflammatory cytokines, meaning that for a short moment you have some inflammation markers present in the body before you sleep. Then we have the medial pre optic nucleus which brings your body temperature down a few degrees over all the parts of the brain that get you energized turn off and the parts of your brain that calm you down. Turn on all of these facets combined and work together with other areas of the brain in order to not only initiate sleep but also regulate your sleep throughout the night, switching between the five stages of sleep, which will also be discussed in a later lesson. The circadian rhythm as well as circadian alignment is a crucial factor in the sleep equation, one that's often overlooked, although you may hear about your eight hours every night very rarely, if ever, will you hear that? Those eight hours have to be at a specific time at the night as well. And in the next lesson we'll be discussing circadian misalignment. What happens when you don't follow your personal biological clock?