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15 Cards in this Set
- Front
- Back
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What 2 systems temporally orchestrate brain and behaviour?
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1. Circadian System (Process C)
2. Homeostatic system that regulates sleep need (process S) |
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How is the human circadian timing biology sensitive to onset/offset of light?
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Through a network of neurochemical connections and a light sensitive hormone called melatonin
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Melatonin signals the body to do what?
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Go to sleep
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Cortisol signals the body to do what?
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Wake up
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Are circadian clocks found only in the brain?
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No, found throughout all major organ systems
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What are 2 candidate recovery processes that perhaps provide recovery from elevated sleep pressure?
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1. EEG slow wave activity (SWA)
2. Increased total sleep time (TST) |
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What are the two types of sleep?
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Non REM sleep
REM sleep |
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How long does one cycle of non-REM and REM sleep last?
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90 min
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What is a sleep adaptation seen by many aqautic animals?
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Uni-hemispheric sleep
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The internal biologic clocks originates in which thalamic nuclei?
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Super Chiasmatic Nuclei (SCN)
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What is the progession seen from infant to adult in terms of type of sleep?
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Infant = polyphasic
Pre-school = biphasic (naps) Adult = monophasic |
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Are the cognitive effects of sleep loss cumulative?
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YES - people are often not aware of how it is affecting them
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When patients were given variable amounts of recovery sleep after deprivation, what was seen?
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Those that received more recovery sleep did better
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What are the neurobehavioral deficits that accumulate as a result of sleep restriction across days?
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Sleep Debt
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Is everyone the same in terms of vulnerability to sleep deprivation?
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No, some people are more vulnerable and have difficult time recovering from it
Others appear to be quite resilient and recover quickly |
