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14 Cards in this Set
- Front
- Back
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Define Sleep as an ASC |
Sleep is a regularly occurring altered state ofconsciousness that typically occurs spontaneously and is primarilycharacterised by a loss of awareness. |
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4 Purposes of the restorative function of sleep |
1. Recovery from physical and mental exertion2. Repair damaged cells 3. Replenish energy stores 4. Memory formation |
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Evidence of restorative theory |
Sleep repairs and replenishes the body and increases immunity to disease: •We feel refreshed when we wake up + when we are sick we sleep more •Lack of sleep will affect our energy levels and make us feel drowsy and fatigued. |
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Criticisms of restorative theory |
The brain is more active in REM sleep she replenishing. •Goes against the assumption that the body rests during sleep. |
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2 Purposes of survival theory of sleep |
1.Night time is dangerous for humans 2.Being inactive during this time aids our survival aswe are less likely to be eaten! |
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Evidence of survival theory of sleep |
There is a pattern that demonstrates how an animal's energy requirements and number ofpredators correlates with sleep time •E.g) cows don't sleep much as they spend more time grazing |
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Criticism of survival theory of sleep |
When animals are asleep, they are more vulnerable to predators due to reduced awareness oftheir external environment. |
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What is an EEG? |
An EEG detects, amplifies and records electrical activity in the brain in the form of brainwaves |
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What is an EOG? |
An EOG detects, amplifies and records electrical activity in the muscles which control the eye |
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What is an EMG? |
An EMG detects, amplifies and records electrical activity in the muscles |
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What is an EKG? |
An EKG detects,amplifies and records the electrical activityof the heart muscle (heart rate). |
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Thermometer in measuring sleep |
Measures body temperature. Body temperature is linked to alertness. •An increase or decrease in body temperature may indicate an altered state of consciousness.•Limitation: minimal changes; doesn't indicate whether in an NWC or ASC. |
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GSR in measuring sleep |
Indicates the electrical conductivity ofthe skin. As the skin becomes more moist, through perspiration, it's conductivity increases. GSRdecreases when we are relaxed and not in a hot environment. •Limitation: measures changes in arousal; doesn't indicate SOC (NWC or ASC) |
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