Chapter 6: PERCEPTION OF FORM

Question 1

What are the main steps of perception of form?

Answer 1

• begins with neurons in striate cortex that are sensitive to orientation and spatial frequency
• these neurons send info to V2
• Then relayed to the subregions of the visual association cortex that constitute the ventral stream.

Question 2

What do people with visual agnosia see and what is it caused by?

Answer 2

• caused by damage to the extrastriate cortex

- unable to identify common items by sight, although visual acuity remains

Question 3

What is prosopagnosia?

Answer 3

• common symptom of visual agnosia
• failure to recognize particular people by the sight of their faces.
• Fusiform face area is responsible for face recognition

Question 4

In what case is the development of the FFA altered?

Answer 4

• autism

- Williams syndrome