Perception And Sensation Flashcards
(30 cards)
What is perception
The organisation and interpretation of information in the brain
What is perception
The organisation and interpretation of information of sensory info
What is sensation
Info we see through our senses
Our senses are active all the time , receiving different types of info
What is the ponzo illusion
This is an example of misinterpreted of depth cues
The horizontal line higher up in the image appears longer but both lines are actually the same size
What’s the muller lyer illusion
One line with outgoing arrows appears as longer than the inward arrows
What was Rubin’s case
This is an ambiguous figure where it is interpreted as a vase or 2 faces
What was the Ames room illusion
Misinterpreted depth cue is where there’s two people on either side of the wall and person 1 appears taller than person 2 on the other side of the room
What is monocular and binocular depth cue
Binocular - this is when both eyes are used to detect cues
Monocular - this is when one eye is used to detect cues
What’s a visual cue
Features of the environment that give us info about movement , distance etc
What are visual constancies
Seeing objects as the same despite seeing them from different angles and distances
What is convergence
This is when our eyes come closer together when an object is close
Our muscles work harder
What is retinal desparity
This is when we get a slightly different view from each eye as they are 6cm apart
Different views give our brain info about depth and distance
Which depth cue is retinal desoarity and convergence used for
Binocular depth cue
Name the 4 ways used for monocular depth cues
Height in plane , relative size , occlusion , linear perspective
What is height in plane
This is when objects in the visual field are higher up appear further away
What is relative size
When objects appear smaller in the visual field than known objects of similar size
Their perceived as further away
What is occlusion
Objects behind or obscured by other objects are further away
What is linear perspective
When lines are parallel appear to get close together and meet a point in the distance
Identify and explain one binocular depth cue
One example of binocular depth cue is convergence when then the closer the object the harder the muscles work
E.g when u bring a pencil slowly closer to the tip of your nose , your eyes usually turn inwards.
This is binocular depth cue as both eyes are used and your muscles are working harder
Explain the difference between sensation and perception
The difference between sensation and perception is like the difference between feeling and thinking.
Sensation is our body’s way of detecting a stimulus in the environment e.g light waves (vision).
Perception is how our brain organises and interprets theses sensations
What are visual illusions
These are unconcious mistakes of perception.
These Happen as our visual perception is tricked into seeing something inaccurately as the brain uses inappropriate strategies of interpreting sensory info
What is size constancy
This is when we look down from a great height ( plane window ) and people on the ground look ‘ant sized ‘.
Our brain knows they aren’t ant sized but they are just far away making them appear smaller
What is misinterpreted depth cue
Our brain sees linear perspective ( depth cue ) in a picture , creating impression of distance and mistakenly applies rule of size constancy
What is ambiguity
The way some images or stimulus can be perceived in more than one way
