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conciousness

awareness of outside and inner mental processes, thoughts, feelings and perceptions

attention

a state of focused awareness

preconcious

level of consciousness outside of awareness, contains memories and feelings that can be brought into the conciousness

unconscious

subconcious, level of consciousness that incudes thoughts not avalible to conscious awareness

nonconscious

level of consciousness devoted to processes completely inaccessible to concious awareness

hypothalamus

controls biological block, regulates changes in blood pressure, body temp, pulse, blood sugar, hormones, activity, sleep and wakefulness over 24 hours

circadian rythms

daily patterns of changes

reticular formation

neural netweork in brainstem and midbrain essential to the regulation of sleep wakefulness, arousal and attention

Stage 1 sleep

gradual loss of reponsiveness to outside, drifting thoughts and images

Stage 1 sleep

theta waves

Stage 2 sleep

50% of sleep time

Stage 2 sleep

sleep spindles and K complexes

Stage 3 sleep

deep sleep stage

Stage 3 sleep

delta waves

Stage 4 sleep

deepest sleep stage, slowed heart rate and respitratioon, lowered temprature and blood flow to the brain, growth hormone secreted

REM sleep

sleep stage when eyes move, 5-6 times per night, 80% dreaming, constitutes of 20% of sleep time, skeletal muscles are paralyzed

NREM

sleep without REM

insomnia

inability to fall asleep or stay asleep

narcolepsy

sudden and uncontrollable lapse into sleep

sleep apnea

temporary cessations of breathing, wake the sleeper

night terrors

bloodcurdling screams and intense fear in children during stage 4 sleep

somnambulism

sleep walking, during stage 4 sleep

manifest content

freud, the remembered story line of a dream

latent content

freud, the meaning of a dream

activation-synthesis theory

during REM sleep, the brainstem stimulaes the forebrain with random neural activity which we interpret as a dream

cognitive information processing theory

dreams are the interplay of brain waves and psychological functioning of the interpretive parts of the mind

daydreaming

state with focus on inner, private realities which can generate creative ideas

hypnosis

state with deep relaxation and heightened suggestibility

meditation

set of techniques used to focus concentration away from toughts and feels in order to create calmness, tranquility and inner peace

psychoactive drug

a chemical that can pass through the blood/brain barrier to alter preconception, thinking, behavior and mood

depressants

reduce activity of CNS and induce sleep

narcotics

depress the CNS, relieve pain, induce feelings of euphoria

stimulants

activate motivational cneters, reduce activity in inhibitory centers of the CNS

hallucinogens

distort perceptions and evoke censory images in the abscense of sensory input

psychological dependance

intense desire to achive the drugged state

physiological dependence

addiction, blood chemisty changes from taking a drug, the body needs to take the drug again to prevent withdrawl

withdrawal

intense craving for drug and effects opposite to those that the drug usually induces

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