Consciousness
Consciousness
Internal feelings, awareness
Even when motionless the brain is aware
When there’s so much going on you can’t recognize everything because of limited attention
Someone in a coma lacks awareness of themselves and the outside stimuli
They can’t move or act
Selective attention is when you only pay attention to what you’re able to
Magicians and misdirection
Inattentional blindness - directing attention away from something visible
Change blindness - not noticing something changes in our environment
The Maya and Inca had theories about it in 1600s
John Locke had the idea it was separate from our bodies
In 1889 William James was the first American Psychologist
Je developed functionalism
He tried to figure out what it was FOR
Sleep dep kills faster than food - T
Link between sleep position and personality - F - T
Laying on ur left side helps with nausea and heartburn - T
Huumans feel sleepy at 2AM and 2PM every day - T
Humans are the only animals that fight sleep - F - T
Increased periods of darkness throughout the year impact mood - T
Falling asleep should take 5 minutes - F - T
Sleeping on weekends helps u catch up - F
75 % ppl dream in color - F
Sleep takes short term memory and transfers it to long term memory
Sleep is necessary for…
Protection from nocturnal predators
Recovering immune system
Strengthens memory
Assists creativity/decision making
As we sleep the more we want to be awake and vice versa
Not the only cycle because we would just sleep all day otherwise
Circadian rhythm is internal clock
Adults feel most tired between 1-3PM 2-4AM
Eyes send signals to hypothalamus about light levels and adjusts melatonin production
Teenagers have a sleep delay to fall asleep before 11PM when their melatonin is admitted. Most tired 3-7AM and 2-5PM
People need 9-10 hours of sleep
Cooler temperatures encourage sleep
Air should be 65 degrees
Take hot bath or shower before bed
Stage one: non rem stage 1 (nrem-1)
Light sleep
Stagee two: NREM 2
The 20 minute stage of sleeping “i wasn’t sleeping”
Woken very easily
No dream, no eye movement
Stage three/four: NREM 3-4
High freq delta waves
30 minutes
Most difficult to wake up
Parasomnias:
Sleepwalking, talking, night terrors, bedwetting, sleep apnea
REM sleep: dream stage
Most valuable sleep
Rapid eye movement
Brain is active but disconnected
Dreams begin
Heart rate rises
Stage 3 disappears if you are awoken during REM sleep
Dont nap after 4
20-30 minutes OR 90 minutes
Dont nap if you have insomnia
Dreaming can take place at any time during sleep and is considered to be the window into the unconscious mind.
The most vivid dreams take place during REM sleep.
Feelings of trying to run or escape but being unable to happen because our bodies are paralyzed during REM sleep
Greeks belived there was a reason for dreams and to see our unconscious mind
Freud believed that behafiour was the result of conflict and interactions between the preconcious, consious, and unconcious
Precon - pay attentuon to and acts as a guard
Con - current awareness
Uncon - things we dont wwant to feel
Freud has iceberg theory
Freudian slips - word vomit
Dream info
Manifest content - remembered part
Latent content - unconscious content that reveals the wishes we really hide within the dream
Freud falls out of favor over the year because theres no scientific basis
Recurring dreams are a result of stress
75% of people have these and most people are women
Daydreaming is a short term detachment
95% of people do this at least once
It helps organize thoughts
Dyssomnias:
Insomnia
Narcolepsy
Parasomnias during 3-4:
Sleep Apnea
sleepwalking/talking
Night terrors
Insomnia is found in 1 to 10 adults
Affected by stresss levels
Chronic fatigue
Medicine can help
Effects 1 of 2000
Narcolepsy causes sudden attacks of overwhelming sleepiness that may occur while standing or talking
Sleep apnea
Effects 1 in 20 adults second most coommon
A person stops breathing while sleeping
Usually related to obesity and men over 50
sleepwalking/talking
Effects 1-15 people
More comon in children than adults
Night terrors
Effects 1 in 30 children, 1 in 100 adults
Most common around 3
More intense than a nightmare, doubled heartrate and breathing
High blood pressure
No recollection of attacks
REM sleep disorder
Brain fails to suppress voluntary muscle movements during REM sleep
Common in men over the age of 50
Altered states of consciousness
When consciousness is changed sometimes too aware or not aware enough of internal thought