Psych/Soc Flashcards
What are the three visual cues?
- Depth
- Binocular Cues
- Monocular Cues
Binocular Cues (2)
- retina disparity: eyes are 2.5 cm apart.
ex: when you’re at a bowling alley, y
our left eye looks at the pins from the left, and the right looks at the pin from the right and both eyes bring them together - Convergence: things that are far away, eyes are relaxed, and when things are close to us, eyes contract.
Monocular Cues:
- relative size
ex: two ants of the same size but the one closer to us seem bigger. - interposition- overlap
ex: if you have a rectangle infant of a circle, the rectangle seems closer to us. - shading and contour
- motion parallax- things that are farther away move slower
What is constancy?
our perception of object doesn’t change even if it looks different on retina.
What are the five sensory adaption?
- hearing
- touch
- smell
- proprioception
- sight
Hearing
takes place in our inner ear muscle.
- loud noise cause muscle to contract dampening the ear.
Touch
temperature receptors desensitize
Smell
desensitize to molecules
proprioception
ex: if you wear googles and a mice is upside down, over time you would accommodate and flip the mice over
sight
theres two types:
- down regulation: super bright outside, the pupils will constrict allowing less light to enter the back of the eyes
- dark- eyes will dialate
Webers Law
states that 2 vs. 2.05lbs will feel the same, while 2vs. 2.20 weight difference would be noticeable.
Just Noticeable difference
threshold at which you’re able to notice a change in any sensation
Absolute threshold intensity?
The minimum intensity of stimulus needed to detect a particular stimulus 50% of the time
what influences absolute threshold, provide an example?
ex: if you asked someone on a date through text.
1. Expectation
2. Experience
3. Motivation
4. Alertness
subliminal stimuli
stimuli below the absolute threshold ( something you don’t pay attention to)
Function of the Vestibular System and what is it focus on?
- balance and spatial orientation.
- focus on the inner ear (semicircular Canal)
What is the canal function?
its filled with endolymph and allows us to detect what direction our head is moving in and the strength of rotation.
What is the otolithic organs( utricle and saccule) function?
help us detect linear acceleration and head positioning.
in these Ca crystals attached to hair cells, and when we go from lying down to standing up, they move and pill on hair cells which triggers AP.
How do we get dizziness and vertigo?
endolymph doesn’t stop spinning the same time as we do, sit continues moving and the brain thinks were still moving even when we’ve stopped.
What is the Signal Detection Theory?
the point in which we will be able to detect a signal with uncertainty.
What is hit?
When a signal is present and subject acts on it.
ex: green light
What is false alarm?
When a signal is absent and a subject acts on it.
ex: green light
What is correct rejection?
When a signal is not present and subject does not act on it.
What is miss?
When a signal is present and subject does not act on it
bottom up model
stimulus influence our perception.
ex:
top down model
People form their perception by starting with the big picture and working its way down
What is Gestalt’s Principle?
there are ways for the brain to infer missing parts of the principle when a picture is incomplete.
Law of Similarity
items that are similar to one another are grouped together.
Law of Pragnanz
reality is often organized to reduce to the simplest form possible.
Law of Proximity
objects that are close are grouped together
Law of Continuity
lines are seen as following the smoothest path.
Law of Closure
objects grouped together are seen as a whole.
Conjunctiva
first layer light hits.
Cornea
transparent thick sheet of tissue.
Anterior Chamber
a space filled with aqueous humor, and provides pressure to maintain the shape of the eye ball.
Pupil
hole made by iris (determines eye color)
Lens
bends the light so its able to go to the back of the eyeball.
Suspensory Ligaments
attaches to ciliary muscle to form the ciliary body which secrets the aqueous humor.
Posterior Chamber
area behind the ciliary muscle, also filled with aqueous humor.
Vitreous Chamber
filled vitreous humor, jelly-liked substance to provide pressure to eyeball.
Retina
filled with photoreceptors
Choroid
pigmented black in humans, network of blood vessels.
Sclera
white of the eyes, which fibrous tissue that covers posterior 5/6th of eyeball.
macula
special part of retina rich in cones.
fovea
completely covered in cones, no rods.
non associative learning+ example
when an organism is repeatedly exposed to one type of stimulus
ex: habituation and dishabitutation.
Habituation
person tunes out the stimulus
dishabituation
when an previously habituated stimulus is removed.
sensitization
increase in responsiveness to a repeated stimulus.
Associative Learning
when one event is connected to another
ex: operant and classical
Classical Conditioning
unconditioned stimulus that produces an instinctive, unconditioned response is paired with a neutral stimulus, and with repetition the neutral stimulus becomes a conditioned stimulus that produces a conditioned response.
ex: Guinea pig gets excited about carrot at first, but after time gets excited just at refrigerator door opening. Same with every other time refrigerator door opened.
- does not involve a change behavior
unconditioned stimulus
ex: carrot because no one had to teach guinea pigs to like carrots
unconditioned response
triggers excitement in guinea pig
neutral stimulus
doesn’t cause excitement on its own.
ex: refrigerator door
conditioned stimuli
when a neutral stimuli becomes a conditioned one.
ex: refrigerator door that use to not elect a response in guinea pigs, now does.
conditioned response
learned response
Generalization
Ability of something similar to the conditioned stimulus to elicit the conditioned response, and more similar they are the bigger the response.
Ex. meeting someone new who smiles, reminds us of other smiles.
Discrimination
when you respond to some stimuli but not others.
ex: a dresser makes a rumbling sound guinea pig does not respond.
Extinction
when a conditioned stimulus is repeatedly presented without the unconditioned stimulus, and eventually the conditioned stimulus will not elect a response.
ex: If you open refrigerator door and don’t give a carrot anymore to your guinea pig, over time she would no longer react
- this is used in therapy to get rid of fear
Spontaneous Recovery
- when an old conditioned stimulus elicits a response.
- don’t know why it happens, its usually infrequent and less strong.
Operant Conditioning
- created by BF skinner
- relationship between behaviors and their consequences and how it influences behaviors.
Positive Reinforcement
something is being added to reinforce behavior
Negative Reinforcement
something is being removed to reinforce behaviors
Positive Punishment
something is added to reduce tendency
Negative Punishment
something taken away in effort to decrease chances it will occur again.
shaping
successfully reinforce behaviors that approximate target behaviors. (learned through practice)
Fixed Ratio
schedule of reinforcement
salesman gets bonus every 5 cars he sells, and reinforcement only occurs after the fixed # of responses.
Fixed Interval
schedule of reinforcement
receiving a paycheck every two weeks - time is constant and doesn’t change when he sells one car or two cars.
Variable Ratio
schedule of reinforcement
reinforcement is delivered after # of right responses have occurred.
ex: bonus can be 5 cars at first, 3 for second, 7 for this, etc.
Variable Interval
schedule of reinforcement
responses are reinforce after a variable amount of time has passed.
ex: bonus can come randomly on different days.
Simple Innate Behaviors
reflexes, taxis, kinesis
reflexes
squint or blinking
taxis
bird flying towards or away from light
kinesis
movement with no purpose
ex: rats randomly scurrying in different directions.
Complex innate behaviors
fixed action patterns, migration, circadian rhythm
fixed actions patterns
mating dance
migration
birds flying south
Circadian Rhythm
biological clock
insight learning
solve a problem using a past skill “aha moment”
latent learning
learned behavior is not expressed until required
aversive control
situation where behavior is motivated by threat of something unpleasant