Sleep and Conciousness

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Last updated 12:51 AM on 10/13/26
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23 Terms

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neuroplasticity

the ability within the brain to constantly change both the structure and function of many cells in response to experience or learning.

<p>the ability within the brain to constantly change both the structure and function of many cells in response to experience or learning.</p>
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consciousness

Awareness of ourselves and our environment

<p>Awareness of ourselves and our environment</p>
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cognitive neuroscience

A field that attempts to understand the links between cognitive processes and brain activity.

<p>A field that attempts to understand the links between cognitive processes and brain activity.</p>
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dual processing

the principle that information is often simultaneously processed on separate conscious and unconscious tracks

<p>the principle that information is often simultaneously processed on separate conscious and unconscious tracks</p>
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parallel processing

the processing of many aspects of a problem simultaneously

<p>the processing of many aspects of a problem simultaneously</p>
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sequential processing

processing one aspect of a problem at a time; generally used to process new information or to solve difficult problems

<p>processing one aspect of a problem at a time; generally used to process new information or to solve difficult problems</p>
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sleep

periodic, natural loss of consciousness--as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation

<p>periodic, natural loss of consciousness--as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation</p>
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circadian rhythm

A physiological cycle of about 24 hours that is present in all eukaryotic organisms and that persists even in the absence of external cues.

<p>A physiological cycle of about 24 hours that is present in all eukaryotic organisms and that persists even in the absence of external cues.</p>
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REM sleep

the stage of sleep marked by rapid eye movements, dreaming, and paralysis of motor systems

<p>the stage of sleep marked by rapid eye movements, dreaming, and paralysis of motor systems</p>
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alpha waves

brain waves that indicate a state of relaxation or light sleep

<p>brain waves that indicate a state of relaxation or light sleep</p>
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NREM sleep

Quiet, typically dreamless sleep in which rapid eye movements are absent; divided into four stages; also called quiet sleep.

<p>Quiet, typically dreamless sleep in which rapid eye movements are absent; divided into four stages; also called quiet sleep.</p>
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hallucinations

perceptions that have no direct external cause

<p>perceptions that have no direct external cause</p>
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hypnagogic sensations

bizarre experiences, such as jerking or a feeling of falling or floating weightlessly, while transitioning to sleep

<p>bizarre experiences, such as jerking or a feeling of falling or floating weightlessly, while transitioning to sleep</p>
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delta waves

long, slow waves that indicate the deepest stage of sleep

<p>long, slow waves that indicate the deepest stage of sleep</p>
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suprachiasmatic nucleus (SCN)

a pair of cell clusters in the hypothalamus that controls circadian rhythm and causes the pineal gland to adjust melatonin production, thus modifying our feelings of sleepiness

<p>a pair of cell clusters in the hypothalamus that controls circadian rhythm and causes the pineal gland to adjust melatonin production, thus modifying our feelings of sleepiness</p>
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insomnia

recurring problems in falling or staying asleep

<p>recurring problems in falling or staying asleep</p>
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narcolepsy

uncontrollable sleep attacks

<p>uncontrollable sleep attacks</p>
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sleep apnea

a disorder in which the person stops breathing for brief periods while asleep

<p>a disorder in which the person stops breathing for brief periods while asleep</p>
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REM sleep behavior disorder

A sleep disturbance in which the mechanism responsible for paralyzing the body during REM sleep is not functioning, resulting in the acting out of dreams.

<p>A sleep disturbance in which the mechanism responsible for paralyzing the body during REM sleep is not functioning, resulting in the acting out of dreams.</p>
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dream

a sequence of images, emotions, and thoughts passing through a sleeping person's mind.

<p>a sequence of images, emotions, and thoughts passing through a sleeping person's mind.</p>
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Sigmund Freud Dream Theory

Dreams are wish fulfillment

Dreams uncover the repressed information in the unconscious mind because we act out our unconscious desires (our wishes) in our dreams

These repressed desires in our dreams are symbolic

<p>Dreams are wish fulfillment</p><p>Dreams uncover the repressed information in the unconscious mind because we act out our unconscious desires (our wishes) in our dreams</p><p>These repressed desires in our dreams are symbolic</p>
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REM rebound

increased amounts of REM sleep after being deprived of REM sleep on earlier nights

<p>increased amounts of REM sleep after being deprived of REM sleep on earlier nights</p>
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Psychoactive Drugs

a chemical substance that alters perceptions and moods