Glossary of Psych B105 Ch. 4 Consciousness
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- What is conciousness?
- The immediate awareness of internal and external stimuli.
- What does "stream" of conciousness mean?
- It means that conciousness is continuous.
- What are circadian rhythms? Give an example.
- Circadian Rhythms are the biological processes that systematically vary over a period of about 24 hours. Sleep/Wake cycles are examples of Circadian Rhythms.
- What is the Suprechiastmatic Nucles?
- The SCN is the internal pacemaker that governs the timing of circadian rhythms, including sleep/wake cycles and the mental alertness cycle.
- What is Melatonin?
- A hormone manufactored by the pineal gland that produces sleepiness.
- What is an Electroencephalograph?
- An instrument that uses electrodes placed on the scalp to measure and record the brain's eletrical activity.
- What is an Electroencephalogram?
- The EEG is a graphic record of brain activity produced by an electroencephalograph.
- What is REM Sleep?
- REM (Rapid Eye Movement) Sleep is the type of sleep during which dreaming usually occurs and voluntary muscle activity is supressed. It is during this time that memories are consolidated.
- What is NREM Sleep?
- NREM (Non-REM) Sleep is quiet, typically dreamless sleep in which rapid eye movements are absent. NREM sleep is divided into four stages.
- What are Sleep Spindles?
- Sleep Spindles appear during NREM Phase 2 sleep, they are brief bursts of brain activity that last for a second or two.
- What are K-Complexes?
- K-Complexes are single high-voltage spikes in brain activity.
- What is Sleep Apnea?
- Condition where the sleeper repeatedly stops breathing during sleep.
- What is RLS?
- Restless Leg Syndrome, persons complain of an unpleasant creeping, crawling, tingling, itching, or prickling sensation deep inside their lower legs accompanied by an irresistible urge to move.
- What is Insomnia?
- Condition where a person ahs trouble sleeping, or staying asleep.
- What is Somnambulism?
- What are Night Terrors?
- Like Sleep-Walking, occur during stage 3 or 4 of NREM sleep.
- What are parasomnias?
- A general category of sleep disorders that involve arousal or activation during sleep or sleep transitions (Example : Bruxism)
- What is REM Sleep Behavoir Disorder?
- A sleep disorder in which the sleeper acts out his or her dreams.
- What is Narcolepsy?
- Narcolepsy is a sleep disorder characterized by excessive daytime sleepiness and brief lapses into sleep throughout the day.
- What is Cataplexy?
- A sudden loss of voluntary muscle strength and control that is usually triggered by an itnense emotion. Cataplexy usually accompanies Narcolepsy.
- What is Sleep Thinking?
- Repetitive, bland, and uncreative ruminations about real-life events, during sleep.
- What is a Dream?
- A story-like episode of unfolding mental imagery during sleep.
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