obj. perception

Question 1

3 stage model includes?

Answer 1

1. extract local features (low-level vision)
2. group features into shapes and objects (mid-level vision)
3. recognize objects (high-level vision)

Question 2

first stage of 3 stage model of object perception

Answer 2

extract local features (low-level vision)

Question 3

second stage of 3 stage model of object perception

Answer 3

group features into shapes and objects (mid-level vision) (Gestalt grouping principles)

Question 4

third stage of 3 stage model of object perception

Answer 4

recognize objects (high-level vision)

Question 5

neuropsychological evidence for low-level vision

Answer 5

scotoma

Question 6

neuropsychological evidence for mid-level vision

Answer 6

apperceptive agnosia

Question 7

neuropsychological evidence for high-level vision

Answer 7

associative agnosia

Question 8

apperceptive agnosia

Answer 8

selective loss in shape perception due to extrastriate visual cortex damage (e.g. cannot match shapes, letters, and numbers)

Question 9

associative agnosia

Answer 9

selective loss in object recognition and identification

Question 10

structuralist pov on object perception

Answer 10

object perception is the sum of individual image features

Question 11

illusory contours

Answer 11

lines that are not actually there

Question 12

gestalt pov on perception

Answer 12

perceptual whole could be greater than the sum of its parts

Question 13

gestalt grouping principles (10)

Answer 13

-similarity
-proximity
-good continuation
-common region
-connectedness
-parallelism
-symmetry
-common fate
-synchrony
-closure

Question 14

difference between law of good continuation and law of closure?

Answer 14

-good continuation assumes a flow of lines that could be disrupted when the lines are actually connected differently than imagined; groups lines of similar orientation
-closure is perception of line continuation in the gap between two lines

Question 15

Ishihara test of colour vision demonstrates what Gestalt principle?

Answer 15

law of similarity

Question 16

Blocked Bs test demonstrates what Gestalt principle?

Answer 16

law of closure

Question 17

texture segmentation

Answer 17

region with common texture properties are perceived as an image; involves proximity and similarity

Question 18

who is the villain of texture segmentation?

Answer 18

camouflage beats texture segmentation

Question 19

subjective contours depends on?

Answer 19

occlusion such as Kanizsa triangle