SAFMEDs Ch 8 Flashcards
Activation-synthesis dream theory
- dreams come from a purely physiological/biological point of view
- pons sends signals to the cerebral cortex creating what we perceive as dreams
- dreams are meaningless, there is nothing to interpret
Altered state of consciousness
-hypnosis is an induced altered state of consciousness that heightens a person’s suggestibility-openess to responding to suggestion
Alpha waves
- between 7 and 12 Hz
- relaxed, ready for sleep
Beta waves
- between 15 and 30 Hz
- awake, alert, anxious
Anhedonia
- the result of the stop of dopamine production
- the inability to feel pleasure physically
Biological rhythm
- human body experiences
- not always detected by our conscious awareness
- changes in body temperature, hormone levels, energy levels
Chronobiology
-the study of various temporal biological rhythms
Circadian rhythm disruption
- an out of synce sleep/wake cycle
- can occur due to jet lag
Conscious awareness
-all the sensations, perceptions, memories and feelings you are aware of at any given moment
Consciousness
-our state of awareness of our experience, sensations, thoughts and environment
Delta waves
- slow waves
- Up to 4 Hz
- deep sleep
- stage 3 of NREM
Disinhibitor
- Something that causes a reduction in one’s inhibitions
- makes people, or animals act more impulsively
- alcohol
Dissociation theory
-the hypnotic state divides the higher executive functions of the brain, including a “hidden observer” or second part of the mind that keeps the mind aware during hypnosis
Electroencephalography (EEG)
- measures electrical currents produced in the brain as brain cells communicate with each other
- records currents as a visual tacing called an encephalogram
Diurnal
-creatures that stay awake during the day and sleep at night
Dissociative state
-an altered state of divided consciousness
Dreams
-all images, events, sounds and other sensations experienced during sleep
Dualism
-the theory that the mental and the physical – or mind and body or mind and brain – are, in some sense, radically different kinds of thing
Hypnosis
-an induced altered state of consciousness that heightens a person’s suggestiblity-openess to responding to suggestion- without losing his or her sense of self or control
Hypnotic susceptibility
-the degree to which an individual is able to enter into hypnosis
Information-processing dream theory
- explains dreams as the brain’s attempts to make sense of what we encounter during thr day
- dreams are one way we actively process and analyze information rather than just respond to stimuli
Infradian rhythms
-a rhythm with a period longer than the period of a circadian rhythm
Jet lag
-an out of sync sleep/wake cycle due to traveling across several time zones
K-complex
-large, high voltage waves that often appear in response to outside stimuli as sounds
Insomnia
- the inability to fall asleep ot stay asleep
- may be acute or chronic
- can be caused by underlying medical or psychiatric conditions, stress, emotional or physical discomfort, stimulant and disruptions to the normal sleep cycle
Latent content
-what the dream content actually represented
Manifest content
- what we recall from the story line of our dreams
- symbolic of something deeper within the unconscious
- symbolic of repressed desires
Materialism
- either matter or energy or matter and energy are all that can exist
- all phenomena are matter, energy or the interaction of the two
Melatonin
- sleep hormone
- released by the pineal gland
- increases naturally at night
Microsleep
- a breif shift in brain activity from to sleeping brain waves
- Last from half-second to thirty seconds
- lose consciousness and are unaware of our surroundings
- nodding of the head, drooping eyelids, constant blinking, blank stare, difficulty concentrating
- we are unaware that it occured
Narcolepsy
- a disorder in which a person falls in REM sleep during waking hours
- sudden sleep episodes
Night terrors
- extreme episodes that occur during NREM stage 3
- sweating, agitation, dilated pupils
- children will often scream before falling back to sleep
- details are often vague and not remembered at all
Nightmare
-dreams occuring in REM that have distrurbing content
Nocturnal
-awake during the day, asleep at night