Perception Flashcards
1
Q
What is visual perception
A
- brain’s ability to organise and interpret visual images
- using high level cognitive processes
- (I.e. memory and thought)
2
Q
What are Bottom-up processes ?
A
- sensory-driven processing
- organises incoming information
3
Q
What are Top-down processes?
A
- processes driven by knowledge, experience and expectation,
- determine perception in ambiguous settings
4
Q
What are the three types of visual perception
A
adaption
depth perception
gestalt/whole perception
4
Q
What is adaptation
A
negative after images (photochemical activity in the retina continues even when the eyes are no longer experiencing the original stimulus)
5
Q
What is depth perception
A
- brain uses binocular disparity
- (i.e. the different images seen by L+R eyes,
- and monocular clues (i.e. texture/relative size) to extract depth from an image
6
Q
What is gestalt/whole perception?
A
- simplifying and organising complex images using 6 principles
- (proximity, similarity, continuity, closure etc.)
- seeing as a whole even if parts are incomplete
7
Q
What is a limitation of perception?
A
- sensory processes limit amount of information available to us (brain filters out irrelevant information)
8
Q
what is the assumptive world
A
The assumptive world -> own internal construction model of perceived world e.g. recovery from blindness (mike may): has surgery > improved vision but 2D vision initially built internalised model through touch (3D)
