people miss changes to a scene when eye movements are involved 

-attention follows movement and misses details

shift to external experiences to internal ones

-altered state of conscoiusness

-mentally rehearse 

-problem solving

body temp, hormonal secretions, bodily functions, all regulated during sleep

-regulates mental alertness

like hibernation-might as well sleep at night

different with addition of electricity

1 in 2000 peeps 

excessive daytime sleepiness

inability to stay awake

middle age overweight men

blockage of airway during sleep

-loud snoring

-stops air flow for up to 15 secs

-can happen several hundred times a night

1 in 10 

-prolonged in ability to sleep

-drugs, relaxation training, meditation, self hypnosis

typical in stage 4

-blank stares, unresponsive, no memory afterwards

-varied duration

Mare: frightening dreams during REM

Terrors: -more intense

-scream thrash escape room

-no memory of it

a dream expresses desires,wishes and unfulfilled needs of your unconscious

-manifest: obvious storyline ir events

-Latent: deeper meaning of dreamthat involves symbolism or hidden content

dreams are a continutation of your waking cognivite processes

-no hidden meaning

-current wishes/desires

dreams are result of brain activity

-dreams have no meaning

-brain is organizing itself while you sleep

-dreaming allows rehersal: ways of dealing with threats

-our ancestors who were able to dream were better at handling stressful situations