BioCog 5A perception cognititve Flashcards
1
Q
definition of perception
A
- an experience resulting from stimulation of receptors
2
Q
Daniel Kish
A
- the batman
- echolocation expert
- same brain areas active as in visually able people
3
Q
Patient DF
A
- lesion in occipital lobe
- ventral route = what pathway damages
- > visual agnosia
- can not copy objects (but draw them from memory)
- can not orient a card to a slot (but can but it inside)
4
Q
limitations of the eye
A
- only the visible spectrum
- inverse projection problem (our eye sees only in 2D)
- ## only 1-2 degrees fall on fovea
5
Q
optic chiasm
A
- left visual field to right hemisphere
- right visual field to left hemisphere
6
Q
ambiguity
A
- solved by unconscious inferences and likelihood principle
7
Q
simplicity
A
- a Gestalt principle
- we choose the least coincidental solution
8
Q
symetry
A
- a Gestalt principle
- we group similarily shaped structures into objects
9
Q
proximity
A
- a Gestalt principle
- we group things that are closely together into one object
10
Q
good continuation
A
- a Gestalt principle
- we continue edges or outlines
11
Q
closure
A
- a Gestalt principle
- we complete figures when parts are seemingly missing
12
Q
common fate
A
- a Gestalt principle
- we group objects that move in the same direction together
13
Q
familiarity
A
- a Gestalt principle
14
Q
when we are told the solution to something ambigious
A
- …we have a fixed interpretation
15
Q
Bayesian approach
A
- also called statistical approach
1. prior probability = our expectations
2. likelihood of interpretation of bottom-up info
3. posterior probability = corrected, updated belief
