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Chapter 9 Sleep and Biological Rhythms
Chapter 9 Sleep and Biological Rhythms

...  The executive mechanism Activation of single neurons in this area are related to the sleep cycle ► Axons of these neurons project to the reticular formation, forebrain, brain stem regions that control eye movements ► Carbachol, an ACh receptor agonist, when infused into the reticular formation, pr ...
Slide 1
Slide 1

... in beats per quarter minute, and body movement (BM) in numbers per minute over 100 minutes of uninterrupted sleep. The interval from 242 to 273 minutes is considered the REM period, although eye movements are not continuous during that interval. Copyright © 2014 Elsevier Inc. All rights reserved. ...
rapid eye movement sleep deprivation induces acetylcholinesterase
rapid eye movement sleep deprivation induces acetylcholinesterase

... Cazvin Road. Rasht. Cui/an. I.R.Iran. (e-mail: [email protected]). and the *Department of Physiology. Faculty ofMedicine. Shahid Beheshti University ofMedical Sciences. Evin. Tehran. I.R. Iran. ...
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of sleep

... the bed, yet you can waken to baby’s cry • REM (rapid eye movement) sleep: recurring sleep ...
Anatomy Notes on the Brain
Anatomy Notes on the Brain

... awakened easily and contractions of our muscles can be seen. In stages three and four our brain waves slow and we enter into deep sleep -- it is very difficult to wake someone up in this stage. There is no eye movement or muscle activity at this point. It is during this stage that people can sleep w ...
FOR PPT
FOR PPT

... The subject’s behavior is affected by the new memory, though he/she may not be aware of it. Ex. Someone may have the ability to speak a complete sentence without being able to describe the grammatical rules used. Or, learning to ride a bicycle. ...
Sleep well….Sleep fast!
Sleep well….Sleep fast!

... Nap prophylactically During the afternoon Brief naps (15-20 minutes) can be helpful Be careful of longer naps (especially nocturnal) as they may result in sleep inertia. ...
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SLEEP AND EEG
SLEEP AND EEG

... Infants spent more time in REM sleep. In children, NREM and REM become 50% each. New born sleeps about 16-20 hrs/day. During childhood, child sleeps 10 hrs/day. Adult person needs 7-8 hours of sleep In elderly NREM, Stage IV (deep sleep) and REM sleep decreases. ...
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FIGURE LEGENDS FIGURE 40.1 Periodic activation in sleep cycles
FIGURE LEGENDS FIGURE 40.1 Periodic activation in sleep cycles

... quarter minute, and body movement (BM) in numbers per minute over 100 minutes of uninterrupted sleep. The interval from 242 to 273 minutes is considered the REM period, although eye movements are not continuous during that interval. FIGURE 40.2 Behavioral states in humans. Body position changes duri ...
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Perceiving forms, patterns and objects

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Lesson Description - Harvard Life Sciences Outreach Program

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Unit 2, the Brain
Unit 2, the Brain

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questions from - AP Psychology: 6(A)
questions from - AP Psychology: 6(A)

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This is Your Brain. This Is How It Works.

... • is responsible for language development. It develops slower in boys, that is why males usually develop more language problems than ...
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MEMORY, SLEEP AND OBSTRUCTIVE SLEEP APNEA Although

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consciousness and stress management

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Rapid eye movement sleep

Rapid eye movement sleep (REM sleep, REMS) is a unique phase of mammalian sleep characterized by random movement of the eyes, low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. This phase is also known as paradoxical sleep (PS) and sometimes desynchronized sleep because of physiological similarities to waking states, including rapid, low-voltage desynchronized brain waves. Electrical and chemical activity regulating this phase seems to originate in the brain stem and is characterized most notably by an abundance of the neurotransmitter acetylcholine, combined with a nearly complete absence of monoamine neurotransmitters histamine, serotonin, and norepinepherine. The cortical and thalamic neurons of the waking or paradoxically sleeping brain are more depolarized—i.e., can ""fire"" more readily—than in the deeply sleeping brain. The right and left hemispheres of the brain are more coherent in REM sleep, especially during lucid dreams.REM sleep is punctuated and immediately preceded by PGO (ponto-geniculo-occipital waves) waves, bursts of electrical activity originating in the brain stem. These waves occur in clusters about every 6 seconds for 1–2 minutes during the transition from deep to paradoxical sleep. They exhibit their highest amplitude upon moving into the visual cortex and are a cause of the ""rapid eye movements"" in paradoxical sleep.Brain energy use in REM sleep, as measured by oxygen and glucose metabolism, equals or exceeds energy use in waking. The rate in non-REM sleep is 11–40% lower.
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