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   Author  Topic: Sleep  (Read 8143 times)
wade32
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Sleep  
« on: Apr 16th, 2012, 7:46am »
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In the past, a shroud of mystery has covered the subject of sleep and dreams. Little objective knowledge about the nature of sleep and dreams was available. What information about sleep was accessible, represented a murky mixture of facts and mystified conclusions, mired in superstition. Sleep, this condition of semi-consciousness, causes anxiety because sleep reduces our environmental perceptions and degrades our ability to respond to danger. We are concerned because we realize that we are very vulnerable while we are asleep.
 
Sleep involves the cessation of most of our sensory input and a reduction in most of our physiological processes: We are not aware of ordinary sounds; we close our eyes in order to eliminate visual input. On the physiological level, our limbic nervous system slows down our breathing rate and our heartbeat; it even reduces our blood pressure. Our autonomic nervous system curtails the production of waste products in order to prevent disruptions to our sleep. While our physiological functions operate at a minimal level, our brain also adjusts itself to reduced sensory input and operates on a very primitive level.
 
When we try to probe the mysteries of sleep, we are only moderately concerned with the changes in our physiological functions while we are asleep. After all, these functions are readily discernible and are fully under the automatic control of the autonomic nervous system. What really intrigues us, are the mechanics of sleep as it affects our brain and, therefore, our mind. What are the functions of our brain while we are asleep?  
 
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pex
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Re: Sleep  
« Reply #1 on: Apr 16th, 2012, 11:38am »
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on Apr 16th, 2012, 7:46am, wade32 wrote:
In the past, a shroud of mystery has covered the subject of sleep and dreams. Little objective knowledge about the nature of sleep and dreams was available. What information about sleep was accessible, represented a murky mixture of facts and mystified conclusions, mired in superstition. Sleep, this condition of semi-consciousness, causes anxiety because sleep reduces our environmental perceptions and degrades our ability to respond to danger. We are concerned because we realize that we are very vulnerable while we are asleep.
 
Sleep involves the cessation of most of our sensory input and a reduction in most of our physiological processes: We are not aware of ordinary sounds; we close our eyes in order to eliminate visual input. On the physiological level, our limbic nervous system slows down our breathing rate and our heartbeat; it even reduces our blood pressure. Our autonomic nervous system curtails the production of waste products in order to prevent disruptions to our sleep. While our physiological functions operate at a minimal level, our brain also adjusts itself to reduced sensory input and operates on a very primitive level.
 
When we try to probe the mysteries of sleep, we are only moderately concerned with the changes in our physiological functions while we are asleep. After all, these functions are readily discernible and are fully under the automatic control of the autonomic nervous system. What really intrigues us, are the mechanics of sleep as it affects our brain and, therefore, our mind. What are the functions of our brain while we are asleep?

Perhaps you should buy this book to find the answer Roll Eyes
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keithgilabert
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Keith Gilabert, "Life is but a dream."

   


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Keith Gilabert,  "Sleep"  
« Reply #2 on: May 16th, 2012, 8:50am »
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That is very insightful.  
 
Thanks,
 
Keith Gilabert
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shabbir
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Re: Sleep  
« Reply #3 on: May 29th, 2012, 7:14am »
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A sound sleep can refresh mind.
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alien2
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Re: Sleep  
« Reply #4 on: May 29th, 2012, 11:06am »
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The night blessing of the Yash-El: "Dream not of today."
 
Poppies will put them to sleep.
 
http://www.youtube.com/watch?v=s0R8XZeIpy4
« Last Edit: Nov 8th, 2012, 6:46am by alien2 » IP Logged


iatkrox
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Re: Sleep  
« Reply #5 on: Jul 2nd, 2012, 1:06am »
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Sleep will refresh human body and mind so that's why i sleep 2.am to 11.am every day Wink
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lopez
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Re: Sleep  
« Reply #6 on: Jul 17th, 2012, 3:52am »
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Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity
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benmartorano
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Re: Sleep  
« Reply #7 on: Oct 5th, 2012, 2:49pm »
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Many years ago I discovered it is possible to actually choose what you want to dream about.... I know it sounds nuts but at this point I can do it about 40% of the time.
 
I think John Lennon said he had lost of song ideas come to him in sleep as well
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jordan
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Re: Sleep  
« Reply #8 on: Feb 2nd, 2014, 1:55am »
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Dalai Lama said that sleep is the best meditation
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movie4fun
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Re: Sleep  
« Reply #9 on: Aug 18th, 2014, 6:23pm »
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just dont sleep for 24 hours and you will understand why you need it :p
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anglia
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Re: Sleep  
« Reply #10 on: Aug 20th, 2015, 10:14pm »
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our brain get refreshed while we are sleeping. It also has gone in rest.
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gitanas
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Re: Sleep  
« Reply #11 on: Jun 22nd, 2016, 11:44pm »
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Dalai Lama once said that sleep is the best meditation. I don't know if it was a joke Smiley
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