Sleep & Hypnosis

Module 5, 6

Cognition

Mental Proccess

Consciousness

our awareness of ourselves and our enviroment

Cognitive neuroscience

Study of brain activity linked with our mental processes

dual processing

the principle that info is often simultaneously processed on separate conscious and unconscious tracks

visual perception notes

allows us to “create mental furniture that lets us think about the world“

Unconscious parallel processing

frees conscious mind to deal with new challenges

serial conscious processing

slower than parallel processing, but is very good at solving problems

selective attention

the focusing of conscious awareness on a particular stimulus

cocktail party effect

selective hearing

inattentional blindness

failing to see visible objects when our attention is directed elsewhere

change blindness

failing to notice changes in ones environment

Circadian Rhythm

biological clock that regulates bodily rhythms every 24 hours, such as temperature and sleep

suprachiasmatic nucleus

controls production of melatonin

REM Sleep

rapid eye movement sleep, the stage where vivid dreams commonly occur. Muscles are mostly relaxed but other body systems are enabled.

Alpha waves

the relatively slow brain waves of a relaxed, awake state

sleep

periodic, natural loss of consciousness

hallucinations

false sensory experiences, such as seeing something in the absence of external visual stimuli

sleep spindols

bouts of rapid, rhythmic brain wave activity

delta waves

the large, slow brain waves associated with deep sleep. In stage 3 & 4

Sleep dept

When you don’t sleep for a while you accumulate this

insomnia

recurring problems falling asleep or staying asleep

Narcolepsy

characterized by uncontrollable sleep attacks, might lapse right into REM sleep

Sleep apnea

characterized by temperature cessations of breathing during sleep and repeated momentary awakenings

Night terrors

high arousal on appearance of being scared; unlike nightmares, these happen in stage 4 sleep within 2 or 3 hours of sleeping

Dreams

a sequence of images, emotions, an d thoughts passing through a sleeping persons mind. Dreams are notable for their hallucinatory images, discontinuities, and incongruities, and for the dreamers delusional acceptance of the context and later difficulties remembering it

manifest content

according to Freud, the remembered story line of dream

latent content

the underlining meaning of a dream

REM rebound

the tendency for REM sleep to increase following REM sleep deprivation

Frueds wish fulfillment theory

Dreams provide a “psychic safety valve” expressing unacceptable feelings; contains manifest content and latent content; no scientific support

info processing

Dreams sort out days events and consolidate memories, doesn’t consider why we dream about things that have not happened

Physiological function

Regular brain stimulation from REM sleep helps develop neural pathways; doesn’t explain why we experience meaningful dreams

Activation Synthesis

REM Sleep triggers neural activity that evokes random visual memory’s, which our brain turns into stories; persons brain is weaving the story, which tells us smth about the dream

Cognitive development

Dream reflects dreamers cognitive developments, their knowledge and understanding; Doesn’t address neuroscience of dreams