Unit Five Flashcards
Marijuana adverse effects
Impaired learning and memory, increased risk of psychological disorders, lung damage from smoke
Psychoactive drugs
Mood and perception altering substances through actions at neural synapse
States of consciousness that occur spontaneously
Day dreaming, drowsiness, dreaming
States of consciousness that are physiologically induced
Hallucinations, orgasm, food or oxygen starvation
States of consciousness that are psychologically induced
Sensory deprivation, hypnosis, meditation
Consciousness
Our awareness of ourselves and our environment
Circadian rhythm
Biological clock, regular bodily rhythms like temp and wakefulness that occur on a 24 hour cycle
How does bright light mess with our clock?
Activates light sensitive retinal Proteins, which control the clock by triggering signals to the brains suprachiasmatic nucleus (SCN)
What is the suprachiasmatic nucleus (SCN)
A pair of grain of rice sized cell clusters in the hypothalamus and causes pineal gland to increase or decrease sleep hormone melatonin
What delays sleep
Artificial light
How often do we pass through a cycle of five distinct sleep stages
90 minutes
R.E.M. sleep
Rapid eye movement sleep where vivid dreams occur. Also known as paradoxical sleep
Alpha waves
Slow brain waves of a relaxed but awake state
Sleep
Periodic natural loss of consciousness
Hallucinations
False sensory experiences, like seeing something in the absence of an external visual stimulus
What are hypnagogic hallucinations
Falling or floating
“Abducted by aliens”
Delta waves
Large slow brain waves associated with deep sleep
NREM sleep
Non rapid eye movement sleep, all sleep stages except R.E.M.
When do genitals become aroused regardless of dreams sexual content
R.E.M. sleep
Stages three and four start to decrease as night goes on, true or false
True, you go 1234 4321, severel times, then just 123 321, then 12 21
Why are you paralyzed during R.E.M.
Brains motor cortex is active but the brain stem blocks the messages
What does sleep deprivation do
Can make people fatter, suppress immune cells, also alters metabolism and hormonal functioning, irritability, slow performance
True or false, if you get enough sleep you will be more alert, productive, happy healthy and safe
True
What is sleeps function
Sleep protects-better to sleep than try to survive at night, helps us recuperate- restore brain tissue, makes memories-restore memories of day, recall tasks better after sleep, feeds creative thinking-boost think and learn sleep on problem, and may play a role in growth processes-pituitary releases growth hormone
Free radicals
Molecules that are toxic to neurons
Sleep stage one
Think adopted by aliens
Hypnagogic hallucinations
Fleeting images about day
Alpha waves
Sleep stage two
Sleep talk
Sleep spindles
Increase as night goes on
Spend half night in this stage
Sleep stage three
Sleep talking
Delta waves first appear
Hard to awake
Sleep stage four
Delta waves Sleep walking Hard to awaken Kids wet bed Decreases as night goes on
Insomnia
Recurring problems in falling or staying asleep
Natural ways to treat insomnia
Exercise regularly, avoid caffeine and rich foods before bed, relax before bed with dim light, sleep on regular schedule and avoid naps, hide clock, manage stress,
Narcolepsy
Sleep disorder, uncontrollable sleep attacks,
What is orexin
Also called hypocretin, neurotransmitter linked to alertness
Sleep apnea
Sleep disorder, temporary cessations of breathing during sleep and repeated momentary awakenings. Unaware of it
Night terrors
Sleep disorder, high arousal and appeared terrified, during stage four, target children,
Dreams
Altered state of consciousness, Sequence of images, emotions and thought passing through a sleep person mind
Manifest content
Signing Freud, remembered storyline of a dream
Latent content
Freud, underlying meaning of a dream
What are sleep spindles
Bursts of rapid rhythmic brain wave activity
Sleep theory: freuds wish fulfillment
Dreams provide a psychic safety value- expressing otherwise unacceptable feelings, contain manifest content (remembered) and a deep layer of latent context (hidden)
Sleep theory: freuds wish fulfillment critics
Lacks any scientific support, dreams may be interpreted in many different ways
Sleep theory: information processing
Dreams help us sort out the day’s events and consolidate our memories
Sleep theory: information processing critics
But why do we sometimes dream about things we have not experienced
Sleep theory: physiological function
Regular brain stimulation from REM sleep may help develop and preserve neural pathways
Sleep theory: physiological function critics
Does not explain why we experience meaningful dreams
Sleep theory: activation synthesis
REM sleep triggers neural activity that evokes ransom visual memories which our sleeping brain weaves into stories, tries to make sense of
Sleep theory: activation synthesis critics
The individual’s brain is weaving the stories, which still tells us something about the dreamer
Sleep theory: Cognitive development
Dream content reflects dreamers cognitive development- their knowledge and understanding