object recognition

Question 1

features of object recognition -

Answer 1

• modular
• constructive
• semantic

Question 2

modular - object recognition

Answer 2

The object recognition system is built of specialized functional modules.

Question 3

constructive - object recognition

Answer 3

It builds representations from sensory input and contextual information.

Question 4

semantic - object recognition

Answer 4

Higher level information about e.g. objects functions are built into the representation.

Question 5

what are the visual pathways?

Answer 5

1 - dorsal stream

2 - ventral stream

Question 6

dorsal stream

Answer 6

(where)
Travels up through the upper part of the brain.

Information tends to be where in the world objects are occurring.

Parietal cortex – parietal lobe

Receptive fields

60% of neurons have receptive fields that exclude the fovea.

Question 7

ventral stream

Answer 7

(what)
Into the lower part of the brain.

Information extracted about object identify about what objects are.

Temporal cortex – temporal lobe.

Receptive fields

Always encompass fovea.

Question 8

visual agnosia

Answer 8

lesions to ventral cortex

Question 9

types of visual agnosia

Answer 9

• apperceptive agnosia
• integrative agnosia
• associative agnosia

Question 10

What does agnosia tell us about object recognition?

Answer 10

Object recognition is constructive process.
Object recognition is a sema
ntic process.
Object recognition is not actually a single process.