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NS20 - Consciousness, Unconsciousness, Sleep, EEG (i) (states of altered…
NS20 - Consciousness, Unconsciousness, Sleep, EEG (i)
consciousness
= state of selfawareness, perception, ability to respond to stimuli + act with judgement
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Biological rhythms
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circadian
e.g. sleep-wake, cortisol secretion, body temp variation
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altered by seasons, jet lag
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NREM-REM cycle
NREM
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autonomic stability (decreased HR, BP, temp)
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REM
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autonomic instability (varied HR, BP, temp)
dreams recalled, closer to wakefulness
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Age + sleep
babies sleep for 18 hrs
as child develops, skeet gradually becomes restricted to nightime
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