Chapter 4 Flashcards Preview

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Flashcards in Chapter 4 Deck (11):
1

ocular dominance columns

neurons will respond to one eye better than the other

one right and one left in each hypercolumn

2

hypercolumn

one location

all possible orientations

 

3

damage to ventrical pathway

agnosia - deficits in recognition

type of agnosia depends on location of damage

3

damage to dorsal path

optic ataxia - can ID, poor spatial attention

difficulty directing action

4

location columns

all neurons in one column have receptive fields in same area on retina

5

What can cause blindness

problems with receptors or damage to occipital lobe

6

4 types of cortical columns

location 

orientation

ocular dominance

hypercolumns

7

orientation columns

all neurons in column respond best to a particular orientation

adjacent columns in order based on orientation - natural flow

9

spatial organization 

stimuli in specific locations in the environment are represented by activity in specific locations in the nervous system

10

two types of agnosia

associative - cannot connect visuals to a label but can use other senses

apperceptive - can identify pieces but not the form as a whole

11

retinotropic map

locations on retina correspond to specific locations in cortex