SLEEP Chapter 5 Huffman/Ch 6 Nairne States of Consciousness

Consciousness: an organism’s subjective awareness of internal and external events in its environment.

Levels of awareness : –HIGH: Controlled processes that require attention. Concentration! Ex. Taking a test) –MIDDLE: Automatic processes requiring minimal attention (such as riding your bike) –LOWEST: Minimal or no awareness of the environment

Levels of awareness : –HIGH: Controlled processes that require attention (and interfere with other functions) –MIDDLE: Automatic processes requiring minimal attention (such as riding your bike) Automaticity – fast and effortless processing that requires little or no focused attention

Levels of awareness : –HIGH: Controlled processes that require attention (and interfere with other functions) –MIDDLE: Automatic processes requiring minimal attention (such as riding your bike) –LOWEST: Minimal or no awareness of the environment

Altered State of Consciousness Awareness that is distinctly different in quality or pattern from waking consciousness Sleep, daydreaming, dreaming, hypnosis, meditation, intoxication

- Sleep helps to repair your body. - Sleep helps keep your heart healthy. - Sleep reduces stress. - Sleep improves your memory. - Sleep helps control body weight issues. - Sleep reduces your chances of diabetes. - Sleep reduces the occurrence of mood disorders - Teens need Approx. 9.25hrs of sleep!!!! - We spend One third of our live in sleep mode

EEG Changes During Sleep –Wakefulness; as most of you are now: beta activity – Eyes closed: alpha activity

EEG Changes During Sleep Stage 1: Light Sleep – Alpha Waves Stage 2: Dreams in stages 1-4 stages deal with past events.

EEG Changes During Sleep Stage 4: almost all delta waves –Very hard to wake during this stage!!

EEG Changes During Sleep REM stage: Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future. B.A.D.—wave order Beta Alpha Delta

p154 SLEEP CHART

p150 SUPRACHIASMATIC NUCLEUS

Biological idea Circadian rhythms Occur every 24hours! 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine. # Jet lag # New work shifts New work shifts

How much do we sleep compared to other species? Giant sloth‐ 20 hours/day Giant armadillo‐18 hours/day Arctic ground squirrel‐ 16 hours/day Cat‐14 hours/day Gorilla‐12 hours/day Jaguar‐10 hours/day Chimp‐9 hours/day Human, rabbit, pig‐8 hours/day Gray seal‐6 hours/day Cow, goat, elephant‐3 hours/day Horse, zebra‐2 hours/day

Theories of Sleep Repair/Restoration –Sleep allows for recuperation from physical, emotional, and intellectual fatigue Survival Value –Sleep evolved to conserve energy and protect our ancestors from predators