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3. Sensory cells located on the retina that receive incoming visual stimuli are ___________. a. Rods and Cones b. Fovea c. Ganglion Cells d. Blind Spot
Sensory cells located on the retina that receive incoming visual stimuli are _c. Ganglion Cells.
Expert answered|silvencio|Points 106|
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Asked 8/25/2013 7:15:40 PM
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Weegy: The Central Core is found in all vertebrates. [ Its five main regions help regulate basic life processes, including breathing, pulse, arousal, movement, balance, sleep, and the early stage of processing sensory information. learner.org/discoveringpsychology/brain/central.html The cerebral cortex covers the outer portion (1.5mm to 5mm) of the cerebrum. The cerebral cortex is involved in several functions of the body including: Determining Intelligence Determining Personality Motor Function Planning and Organization Touch Sensation ] (More)
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Weegy: Herein is presented the notion that rapid eye movement (REM) sleep is a sleeping brain's attempt to recover consciousness from the disruption of deep sleep. [ The rationale derives from the following self-evident fact: awakening from deep sleep requires the brain to become “less sleepy” by re-organizing its circuitry toward the threshold for conscious wakefulness. REM may well be a mechanism for moving the brain state in that direction. REM may be a spontaneously triggered state that occurs when the brain has had enough slow-wave sleep (SWS). Rapid eye movement normally occurs only after long sequence of SWS stages, initially dominated by deep Stage N3 [the new equivalent for the older term, Stage IV, according to the classification scheme of 2004 from the American Academy of Sleep Medicine (Iber et al., 2007)]. Hereafter, I will use N3 any time I am referring to the more familiar term, Stage IV. In N3 the complex neural network inter-relationships necessary to create and sustain wakefulness must surely be obliterated. REM also promotes numerous conscious-like dreams. Also, the last awakening from a night's sleep typically occurs in a REM episode during a dream, suggesting that the threshold for wakefulness has been reached. These observations lead to the hypothesis that REM might be the brain's way to awaken itself after it has had a sufficient amount of SWS. ] (More)
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Asked 8/20/2013 6:19:53 AM
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Identify the stages of sleep
Weegy: The period of NREM sleep is made up of stages 1-5. Stage 1 is a light sleep and you are easily woken. Stage 2 is marked by a loss of nearly all muscle tone. Stage 3 is the beginning of a deep sleep, also known as Slow Wave Sleep. [ Stage 4 is the deepest kind of Slow Wave Sleep. 5.REM Sleep marks the onset of vivid dreaming. ] (More)
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Asked 8/20/2013 6:27:20 AM
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Weegy: Identify the stages of sleep. What is REM sleep and why does it matter? REM sleep in adult humans typically occupies 20–25% of total sleep, about 90–120 minutes of a night's sleep. [ REM sleep is considered the lightest stage of sleep, and normally occurs close to morning.[4] During a normal night of sleep, humans usually experience about four or five periods of REM sleep; they are quite short at the beginning of the night and longer toward the end. Many animals and some people tend to wake, or experience a period of very light sleep, for a short time immediately after a bout of REM. The relative amount of REM sleep varies considerably with age. A newborn baby spends more than 80% of total sleep time in REM.[5] During REM, the activity of the brain's neurons is quite similar to that during waking hours; for this reason, the REM-sleep stage may be called paradoxical sleep.. for more information about stages of sleep visit: ] (More)
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Asked 8/22/2013 8:40:37 PM
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Identify the stages of sleep.
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