Psychology II Flashcards
Define consciousness
Our subjective awareness of ourselves and our environment
Define hypnosis
a social interaction in which one person suggests to another person that certain perceptions, feelings, thoughts, or behaviors will sponataneously occur.
Define cognitive neuroscience
the interdiplicinary study of brain activity linked with cognition
Define selective attention
focusing conscious awareness on a particular stimulus
Define Inattentional blindness
Failing to see visible objects when our attention is directed elsewhere
Define inattentional numbness
If you bump into someone they are less likely to notice the other physical stimulus
Define change blindness
failing to notice environmental changes, a form of inattentional blindness
Define dual processing
The principle that information is often simultaneously processed on separate conscious and unconcious tracks
Define blindsight
A condition in which a person can respond to visual stimulus without consciously experienceing it.(if your right eyes view different scenes you will only be consciously aware of one at a time, yet you will display some awareness in the other.)
Approximately how much of our brain function is UNconciouss?
80-90%
Explain parallel processing
processing many aspects of a stimulus or problem simultaneously
Explain sequential processing
Processing one aspect of a stimulus at a time; generally used to processes new information or solve difficult problems
Those working in and interdisciplinary field called __________________________ study the brain activity associated with the mental processes of perception, thinking , memory, and language
cognitive neuroscience
What are the minds two tracks?
explicit/implicit
Prior to the 1900s, psychology was considered the study of _________________
states of consciousness
Who was the first to realize there was an unconscious component to humans?
Sigmund Freud
What is widley considered to be the “Hard problem”
How does consciousness arise from a human brain? (matter)
the brains transmission of information is mostly
a. conscious
b. unconscious
b
What is the explanitory gap
the gap between how the brain works and how it produces conscious
Attention is sometimes necessary for perception: true or false
True
We are often unaware of the cognitive processes that underlie our judgments and preferences. true or false
true
What are the names for the conscious and unconscious systems
Unconscious: implicit,
automatic, System 1
Conscious: explicit,
controlled, System 2
what makes up the controlled process
deliberative, reflective, conscious. about 5% of brain activity
What makes up the automatic process
effortless, outside awareness, “gut feelings”, and intuition. About 95% of brain activity
The 4 main characteristics of automatic processes
- Outside of awareness
- Unintentional
- Involuntary
- Efficient
Failure to see visible objects because our attention is focused somewhere else is called_____________________________
inattentional blindness
We register and react to stimuli outside of our awareness by means of __________________ processing. When we devote deliberate attention to stimuli we use ___________________ processing.
implicit; explicit
Inattentional blindness is a products of our _______________ attentions
selective
Define sleep
periodic natural loss of consciousness- as distinct from unconsciousness resulting from coma, general anesthesia, or hibernation
Define the circadian rhythm
Our biological clock; regular bodily rhythms (for example, of temp. and wakefulness that occur in a 24-hour cycle
Why are screens before bed harmful?
-Light levels go from the eye to a brain
area called the suprachiasmatic
nucleus (in the hypothalamus)
-This nucleus tells the pineal gland to
secrete melatonin: a hormone that
adjusts biological clocks (It causes
decreased production of melatonin in
the morning and increased
production in the evening)
Define Internal desynchronization
Internal desynchronization: A state in which biological
rhythms are not in phase (synchronized) with one another
What are the potential consequences of internal desynchronization
-less total sleep and inferior sleep
-insomnia
-heart disease, stomach issues, breast cancer
-increased chance of accidents
What is the modern idea of how much we should be sleeping? What caused this idea
8 hours. Artificial light.
How was sleep before the production of artificial light
.
First, people went to sleep a little after sunset and woke in them middle of the night for an hour or so (during which they engaged in some leisurely activities). Then they would sleep again until dawn
If people are left alone in a dark room, they are likely to sleep closer to _____________
14 hours
North american countries tend to sleep less than people in Japan and india. true or false
false
What are the three ways we measure bodily activity during sleep
-Electrooculograph (EOG):
records eye movements
-Electromyograph (EMG):
records muscle activity and
tension
-EEG (Electroencephalograph)
What are the four types of wave pattern on an EEG
-Beta (13-24 cps)
-Alpha (8-12 cps)
-Theta (4-7 cps)
-Delta (<4 cps)
What are Beta waves indicitive of
Normal waking thought, alert and problem solving
What are Alpha waves indicitive of
Deep relaxation, blank mind, medetation
What do Theta waves indicate
light sleeps
What do delta waves indicate
deep sleep
How long is a sleep cycle on average
90 min
Define REM sleep
rapid eye movement sleep, in which vivid dreams occur. Also known as paradoxal sleep because the body is both active and ddeeply relaxed. paralyzed.
Define NREM sleep
four stages of brain wave when REM is not occurring
What are the stages of sleep
- A brief transitional stage lasting between 1 and 7 minutes
- mixed brain wave frequency. spindles. Minor noises won’t disturb you. This lasts about 10-25 minutes
- Delta waves. Pulse slows, and you are hard to awaken
- Stage 4: delta waves predominant; deep sleep; most likely stage for
sleepwalking
* Takes about 30 minutes to
reach stage 4
* Usually people stay in stages 3
and 4 for about 30 minutes
REM is characterized by :
-an EEG that looks awake and alert
* rapidly moving eyes behind the lids
* irregular pulse and breathing rate
* loss of muscle tone
* vivid dreaming
Sleep and age
As we age we get less deep and restful sleep
Why do we sleep?
-Protection
-Recooperation
-Helps us store memories
-Feeds creative thinking
-Supports growth
What are symptoms of sleep loss
-fatigue & irratibility
-less emotional control
-more amygdala driven processing
-more susceptible to depression
How does sleep loss impact romantic relationships?
-Less empathy
-More negativity
-Conflict resolution problems
-Selfishness
-increased anger
How does sleep loss increase weight gain?
-increasing grehlin (hunger hormone)
-decreasing leptin (hunger-supressing hormone)
- increase cortisol (fat production)
-decreases metabollic rate
Major sleep disorders: Insomnia and hyperarousal model of insomnia
Insomnia: trouble falling asleep, remaining asleep, and persistant early morning waking. Increases with age and is more prevelent in men
Hyperarousal model of insomnia:
insomnia may be the result of
hyperarousal of physical
characteristics like heart rate,
temperature, EEG, and metabolic
activation
Narcolepsy
Narcolepsy: Marked by sudden and irresistible
onsets of sleep during normal
waking hours. Sometimes lapsing directly into
REM sleep
Night Terrors
Night terrors:
* Night terrors are associated with non-
REM sleep and are characterized by
intense autonomic arousal and
feelings of panic
* This disorder is more common in
children aged 3-8
Sleep walking and talking
sleepwalking (Somnambulism)
* Doing normal waking activities
(sitting up, walking, speaking)
while asleep (occurs during N3
stage; usually stage 4)
* Sleeptalking can occur during any
sleep stage
REM sleep behaviour disorder (RBD)
- Muscle paralysis associated with
REM sleep does not occur, and
sleepers (mostly males) may “act
out” their dreams
What are some natural sleep aids?
Exercise regularly but not in the late evening
* Avoid caffeine after early afternoon, and avoid food
*glass of milk, which provides raw materials for the manufacture of serotonin, a neurotransmitter that
facilitates sleep.
* Relax before bedtime, using dimmer light.
* Sleep on a consistent schedule (rise at the same time, even after a restless night) and avoid long naps
* Hide time displays so you aren’t tempted to check repeatedly.
* Reassure yourself that temporary sleep loss happens,
* Focus your mind on nonarousing, engaging thoughts, such as song lyrics or vacation travel
* Manage stress.
What are the 5 basic theories of why we dream
-Freuds wish fulfillment
-Info processing
-Physiological function
-Activation synthesis
-Cognitive development
Define hallucination
false sensory experience, such as seeing something in an absence of external stimuli
Define suprachiasmatic nucleus
a pair of cell clusters in the hypothlamus that controls circadian rhythm. In response to light, the SCN causes the pineal gland to adjust melatonin productoin, thus modifying our feeling of sleepiness
Define manifest content
according to Freud, the symbolic, remembered story line of a dream
Define latent content
According to freud, the underlying meaning of a dream
define REM rebound
the tendency for REM sleep to increase following REm sleep deprevation
During the N1 sleep stage you are most likley to experience _________________
hallucinations
The brain emits large slow waves during _________________ sleep
N3
As the night prgresses what happens to the REM stage of sleep?
It increases in duration
What is a psychoactive drug?
A chemical substance that alters perceptions and moods
Define substance use disorder
A disroder characterized by continued substance craving and use despite significant life disruption and/ or physical risks
When is drug use a disorder?
- Diminished control
- Diminished social functioning
- Hazardous use
- Drug action (tolerance, withdrawl)
What are some depressents, what do they cause
Alcohol, barbituates, and opiates
-slowed neural processing
-memory disruption
-reduced self-awareness
-Expectancy effects
What are some stimulants
Nicotene, Meth, Ecstasy, Cocaine
What are hallicinogens
Marijuana, LSD
What influences drug use?
Biology, Psychological and social-cultural influences
Characteristics of alchohol
-increases helpful and harmful tendencies
-rates of sexual assualt rise
-alcohol use disorder (girls tend to become addicted faster)
-Slows neural processing (SNS, judgment, speaking, reaction time, can’t tell how drunk they are
-memory disruption
-reduced self awareness
-expectancy effect
Characteristics of nicotine
- 12 minute “buzz”
- Release epi and norepi
-temporarily calm anxiety and reduce pain sensitivity
Characteristics of cocaine
-rush of euphoria
-May highten aggressive reactions
-Higher shock