Neuropsych, Occipital Lobe Disorders

Front 1

Visual Agnosia

Back 1

vision is ok, Visual agnosia is an impairment in recognition of visually presented objects. It is not due to a deficit in vision (acuity, visual field, and scanning), language, memory, or low intellect

Front 2

Apperceptive Agnosia (earlier in the ventral stream bc you cannot form the percept)

Back 2

-problems with perceptual categorization

-cannot form the concept of a whole

-BUT CAN recognize local aspects

If a person is unable to recognize objects because they cannot perceive correct forms of the objects, although their knowledge of the objects is intact, it is apperceptive agnosia

Front 3

Associative Agnosia (cannot link to mem)

Back 3

cannot link percept to knowledge

If a person correctly perceives the forms and has knowledge of the objects, but cannot identify the objects, it is associative agnosia.

-can look at an object and form a percept

(enough of the ventral stream intact)

-knowledge of what something looks like from mem. cannot be linked

Front 4

Category Specific Agnosia

Back 4

know all objects except those linked to a specific category eg. fruits

-memory access disorder

Front 5

Face processing

Back 5

when faces are inverted they are processed as objects (thomson illusion)

-posterior right hemisphere

Front 6

Right Hemisphere N170

Back 6

-faces

-left hem: objects in general

-anterior regions

-only for upright faces

-

Front 7

What do radiologists spend the most time processing?

Back 7

abnormal results, bc they are specialized

normal x rays are super fast

Front 8

If an expert on cars looks at them, what area will also light up?

Back 8

FFA! Objects of expertise may be processed with configural information

-and may use facial recognition areas to do do

Front 9

FFA light up to recognize greebles in experts

Back 9

ddd

Front 10

Covert face recognition

Back 10

fastest reaction time when the pic matches the name.

Prosopagnosia: recognition without being conscious of it

Implicit memory