Perception Flashcards
(41 cards)
What is sensation?
The physical process of collecting data from the environment via the 5 senses
Define perception?
The cognitive process of interpreting data
What are illusions?
The effect of misinterpreting data
What are geometric illusions?
When an image displayed appears distorted
What are ambiguous figures?
When an image is seen in multiple ways
What are fictions?
Seeing something that is not actually there
What are the three types of illusions?
- Geometric illusions
- Ambiguous figures
- Fictions
What do visual constancies allow us to see?
They allow us to see things as the same even though they’re constantly changing
What are the two types of visual constancies?
- Shape constancy
2. colour constancy
What is shape constancy and give an example
The ability to see a constant shape even if it is constantly changing e.g. we know an open door is rectangular in shape even though from where we view it, it is distorted due to perception
What is colour constancy and give an example?
The ability to see the same colour even if it is constantly changing e.g. colour of our bedding changes depending on light but we still perceive it to stay the same
What is depth perception?
The ability of our brain to add a 3rd dimension/depth to everything we see
Define depth cues and name them?
Things that allow us to add this 3rd dimension
- Linear perspective
- Height in plane
- Relative size
- Super imposition
- Texture gradient
What is linear perspective?
When parallel lines converge at a distant point
What is height in plane?
If an image is higher to the eye, it is seen as further away than objects that are lower
What is relative size?
Objects that seem smaller than other objects are perceived to be further away
What is super imposition?
If an object is being blocked by something, we assume that the object doing the blocking, is closer
What is texture gradient?
When we can see the detailed texture of objects that are close, but objects are less detailed further away
What is the core theory of perception?
The constructivists theory
What does the constructivist theory state?
- Perception is based on past experiences
- Uses idea of top down processing and perceptual set
- perceptual set is demonstrated by expectations and motivations
What is top down processing?
The idea that perception is based on what we expect to see
What is perceptual set?
Being pre-disposed to perceive things in one way
Give an example of ‘expectations’ (in perceptual set)
We can read jumpled up sentences correctly due to what words we expect to see in the sentence
Give an example of ‘motivations’ (in perceptual set)
When we feel hungry whilst watching tv, and the names of food attract our attention as our hunger is motivating us to perceive food