PSYC 1010 Lecture Notes - Lecture 11: Cataplexy, Narcolepsy, Insomnia
Document Summary
Consciousness- subjective experience of one"s self and one"s world. Altered states of consciousness- being less than fully alert and aware of the present circumstances (daydreaming/sleep). Circadian rhythm = changes in biological processes that occur on a daily basis. Disruptions may increase risk for: injuries; fatal accidents; health problems. Neutral rest & restoration; memory formation & storage; physical rest; complex. Short term deprivation: mild depression; difficulty with attention & learning; Goes beyond 4 days- confusion; visual & auditory hallucinations. 4 stages of sleep: 3 non-rem stages; 1 rem stage. Stage 1: 5-10 minutes of light sleep as brain powers down by over 50%. Myoclonic jerks- limbs move abruptly, as if startled. Stage 2: 65% of total sleep time- heart rare slows, body temp falls, muscles relax; sleep spindles: 12-14 cycles/second. Stage 3 & 4: deep sleep that"s necessary to feel rested (delta waves 1-2 waves/second) children spend most of their sleep here to stimulate growth hormones.
