Week 9 Flashcards
(13 cards)
What is attention in perception?
The ability to preferentially process some stimulus parts over others due to limited perceptual capacity
What’s the difference between overt and covert attention?
Overt = looking directly
Covert = looking elsewhere but attending mentally
What are fixations and saccades?
Fixations = when eyes are stationary
Saccades = rapid movements between fixations
What happens after attentional capture?
Voluntary attention is directed by goals and expectations
What is the binding problem?
The challenge of combining separately processed features (like colour and motion) into a coherent percept
What are illusory conjunctions?
Mistaken combinations of features from different objects when attention is disrupted
What’s the difference between feature search and conjunction search?
Feature search = fast, based on one unique feature
Conjunction search = slow, needs binding multiple features
What is structuralism in perception?
Claims perception = sum of sensations
How does Gestaltism differ?
Conscious awareness is more than the sum of parts
What are the original Gestalt principles of grouping?
Good continuation
Prägnanz
Similarity
Proximity
Common fate
What are the added Gestalt principles?
Common region
Uniform connectedness
What is gist perception?
Rapid understanding of the overall meaning of a scene, even with brief exposure
How fast can we get the gist of a scene?
As little as 27ms for basic gist
~250ms for accurate perception
