Occipital Lobes

Question 1

Damage to V4. Loss of ability to detect color- black and white world. no color.

Answer 1

Achromatopsia

Question 2

Damage to V5. Inability to detect objects in motion. Can’t track things as they move.

Answer 2

Akinetopsia

Question 3

What is often spared in homonymous hemianopia due to it having much representation in the cortex?

Answer 3

Macula

Question 4

What kind of damage allows you to recover from being blind?

Answer 4

Bilateral Occipital lobe damage

Question 5

Total loss of vision is due to lesions at the

Answer 5

Optic Radiation

Question 6

a blind spot

Answer 6

Scotoma

Question 7

Failure to recognize objects.

Answer 7

Visual Agnosia

Question 8

Inability to recognize objects due to problems perceiving the object.

Answer 8

Apperceptive visual agnosia

Question 9

apperceptive agnosia is due to a lesion where?

Answer 9

parietal-occipital junction- mainly Right

Question 10

Problems associating objects with meaning. Can perceive object as whole. “Can tell you how to use it but can’t tell you what it is used for”

Answer 10

Associative visual agnosia

Question 11

associative visual agnosia is due to lesion at the

Answer 11

left parietal-occipital

Question 12

Inability to appreciate more than one aspect of an object at a time. Can’t play poker- can’t see royal flush

Answer 12

Simultanagnosia

Question 13

Inability to recognize familiar faces

Answer 13

prosopagnosia

Question 14

lesion to mainly right fusiform gyrus causes

Answer 14

prosopagnosia

Question 15

Problems identifying colors. Color discrimination is intact.

Answer 15

Color agnosia

Question 16

Color agnosia has lesion at what side of hemisphere?

Answer 16

left

Question 17

cannot recognize words but can write. cannot read their own written material.

Answer 17

alexia without agraphia

Question 18

alexia without agraphia is due to damage at the

Answer 18

left occipital lobe and corpus callosum

Question 19

information from right occipital cannot reach language centers of left hemisphere. homonymous hemianopia is usually present with this disconnection syndrome.

Answer 19

alexia without agraphia

Question 20

inability to read and write

Answer 20

alexia with agraphia

Question 21

alexia with agraphia is due to lesion at the

Answer 21

angular gyrus

Question 22

comprised of fibers from rods and cones

Answer 22

optic chiasm

Question 23

sees information from outer visual field and crosses over at the optic chiasm.

Answer 23

nasal retina

Question 24

information from inner visual field that stays ipsilateral.

Answer 24

Temporal retina

Question 25

information from retina terminates here and process of visual input begins. What and Where systems begin here.

Answer 25

Visual Cortex

Question 26

area that is primary projection for vision. up is down, down is up. surrounds calcimine fissure. surrounded by area 18.

Answer 26

Area 17(V1)

Question 27

secondary sensory area. elaboration and synthesis of visual info. deals with orientation, spatial frequency, and color. surrounded by area 19.

Answer 27

Area 18(V2)

Question 28

Many connections with other regions of hemisphere. integration of visual information gathered from other senses here. visual memory. no color. recognition of moving shapes.

Answer 28

Area 19(V3)

Question 29

Part of dorsal stream to parietal lobe. processing global information.

Answer 29

Dorsal V3

Question 30

Strong connections with inferior temporal cortex.

Answer 30

Ventral V3

Question 31

Area selective for color, some line orientation, and pattern recognition. Has role in attention. It is in the ventral stream. Processes intermediate level of complexity- simple shapes, not complex things like faces.

Answer 31

V4

Question 32

Area located in the occipitoparietal junction. cells respond to direction of motion and speed of motion.

Answer 32

V5/MT

Question 33

lesions to what area and it's connections causes visual field defects?

Answer 33

Area 17

Question 34

subdivisions of thalamus that relay visual information to the cortex.

Answer 34

Lateral Geniculate Nuclei

Question 35

Top 4 layers (p layers) of lateral geniculate nuclei that is responsive to color, detail, stationary or slow movement. Arise from cones.

Answer 35

Parvocellular

Question 36

Bottom 2 layers (M layers) of lateral geniculate nuclei that is responsive to movement and orientation. Arise from rods.

Answer 36

Magnocellular

Question 37

this is deep in temporal lobes and has the geniculocarine tract that carries info from LGN to cortex.

Answer 37

Optic radiations

Question 38

lesion at right optic nerve causes

Answer 38

total blindness in right eye

Question 39

lesion at optic chiasm causes

Answer 39

bitemporal hemianopia

Question 40

lesion at right optic tract causes

Answer 40

left homonymous hemianopia-left visual field defecit

Question 41

right cortical lesion causes

Answer 41

left homonymous hemainopia but is macula sparing

Question 42

person found that with a lesion to optic radiation, some retain visual function in blind area for movement and color discrimination.

Answer 42

Riddoch

Question 43

what projects to pulvinar of thalamus and visual association areas?

Answer 43

superior colliculus

Question 44

stimultanagnosia is caused by a lesion to the

Answer 44

right occipital lobe