Term
| What are 3 factors of consciousness |
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Definition
1. awareness of external stimuli; you are aware of immediate environment
2. awareness of internal stimuli; you are aware of bodily functions
3. self awareness: you are aware of your personal history and identity
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Term
| Describe high level awareness |
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Definition
| Direct attention selectively to events in environment and to your own thoughts; you execute plans based on info selected |
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Term
| Describe low level awareness |
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Definition
| Day dreaming (spontaneous or intentional pleasant fantasies, thoughts not focused on current affairs) |
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Term
| Describe very low level awareness |
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Definition
| sleep: produces one of the most striking variations in our consciousness |
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Term
| Describe biological rhythms |
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Definition
| periodic fluctuations in physiological functioning; sleep is an example which occurs for about 8 hours everyday; for example, circadian rhyhms |
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Term
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Definition
| an endogenously driven roughly 24-hour cycle in biochemical, physiological, or behavioural processes. |
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Term
| Sleep occurs in stages. What defines the stages by measuring electrical activity in the brain during sleep |
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Definition
| Electroencephalogram (EEG) |
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Term
| EEG waves have what two characteristics |
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Definition
| amplitude (volts) and frequency (cycles per second) |
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Term
| What waves are 13- 24 cycles per second |
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Definition
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Term
| what waves are 4-7 cycles per second |
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Definition
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Term
| what waves are under 4 cycles per second |
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Definition
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Term
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Definition
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Term
An electro-oculogram (EOG) records what:
an Electromyogram (EMG) records what: |
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Definition
eyemovements
muscle movements |
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Term
| There are five stages of sleep. How many are non-REM, how many are REM |
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Definition
four stages are non REM
fifth stage is REM |
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Term
| During sleep, a alert stage: EEG shows what kind of waves |
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Definition
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Term
| in a relaxed state, what type of waves are present |
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Definition
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Term
| When subject is about to fall asleep what waves are present, and what do the EOG and EMG say |
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Definition
| alpha waves; moderate activity; moderate activity |
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Term
Describe the first stage of sleep
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Definition
| alpha and theta waves present, EOG and EMG show low activity |
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Term
| Describe the second stage of sleep |
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Definition
| theta waves, EOG and EMG show decreased activity |
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Term
| Describe the fourh stage of sleep |
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Definition
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Term
| after how many minutes is a person solidly asleep |
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Definition
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Term
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Definition
| EEG shows beta waves; increase in bran activity; EOG show grea activity; EMG is quiet: body 'paraylzed' |
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Term
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Definition
| Dreaming occurs; everybody dreams; firs REM episode lasts about 20 minutes; |
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Term
| The first cycle of a night's sleep is completed when |
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Definition
| the first REM episode ends; to complete a cycle, from stage 1 to stage 4 back to stage 1 takes about 90 minutes |
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Term
| A cycle of sleep occurs about how many times in a night's sleep? |
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Definition
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Term
| Describe what occurs in the second cycle |
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Definition
| Sleeper returns to stages 2 3 and 4. takes about 60-70 minutes |
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Term
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Definition
| (after 3 hours into a night's sleep), the sleeper does not return to stage 4, spends 30 mins in stage 3 before returning to stage 2 where subject might spend 60 minutes; REM sleep lasts about 30 minutes |
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Term
| Describe the fourth stage of sleep |
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Definition
| Enters stages 2 and 3 briefly, returns to stage 2 then REM sleep for almost 45 minutes |
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Term
| Describe the fifth cycle of sleep |
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Definition
| Last hours of sleep, does not return to stage 3 but remains 45 minutes in stage 2; enters the final stage of REM sleep; wakes up |
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Term
| define hypnagogic hallucinations |
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Definition
| waking up in the morning while having a REM episode |
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Term
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Definition
| the lengthening and increasing frequency and depth of REM sleep which occurs after periods of sleep deprivation. When people are prevented from experiencing REM, they take less time than usual to attain the REM state. |
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Term
| Define PGO waves (pontine-geniculo-occipito waves) |
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Definition
| Precede REM sleep, PGO waves tend to occur in stage 4 |
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Term
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Definition
| Child stares; wide-eyed fast pulse, respiration surge, sweating; occur in fourth stage of first sleep cycle |
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Term
| T/F: Nightmares occur in second half of the night during REM (person can't move) |
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Definition
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