Feb 6 Vision & Audtion

Question 1

What are the two subdivisions of the occipital cortex?

Answer 1

Primary visual cortex & striate cortex

Question 2

Color Vision plays a role in?

Answer 2

-detection of movement, depth, position

Question 3

Color vision

Answer 3

primary job of V4

Question 4

Color bliindness

Answer 4

• mostly in males; x-linked

- caused by a deficiency in the development of retinal cones (RBG)

Question 5

What are the connections to V1?

Answer 5

Input from LGN

Output from all other levels

Question 6

What are the connections after V2?

Answer 6

Output to the parietal lobe-Dorsal stream
Output to the inferior temporal lobe- Ventral
Output to the Superior temporal sulcus - STS stream

Question 7

What happened to Patient TN?

Answer 7

Two successive strokes knocked out V1 in both left & right hemispheres which led to Cortical Blindness

Question 8

Lesions to V1 produce

Answer 8

Cortical blindness in the visual field

Question 9

Blindsight

Answer 9

They cannot name the object in the lesioned field, but they can react to it unconsciously

Question 10

Apperceptive Agnosia

Answer 10

They cant redraw the drawing but can correctly identify the object

Question 11

What does apperceptive agnoisa result in

Answer 11

bileraly damame to the lateral parts of the occitpal

Question 12

Associate agnosia

Answer 12

They can redraw correctly but not identify them

Question 13

What does associate agnosia results from?

Answer 13

lesions to the anterior temporal lobes

Question 14

Audtiory Nerve

Answer 14

Carries auditory info from the ear to the CNS

Question 15

Cochlear nuclues

Answer 15

First neurons in the medulla that recieve nueural messages from auditory receptors via the auditory nerve

Question 16

Inferior Colliculus

Answer 16

Recieves info from both the cochlear nucleus & the superior nucleus

Question 17

What are the 3 pathways to the auditory cortex

Answer 17

Medial geniculate nucleus, primary auditory cortex, and secondary auditory cortex

Question 18

Medial Geniculate nuclues

Answer 18

Thalamic neurons recieving signals from the inferior colliculus

Question 19

Primary Auditory cortex

Answer 19

the area of the temporal lobe that receives auditory input from the thalamus

Question 20

Secondary auditory cortex

Answer 20

The area of the temporal lobe surrounding the primary auditory cortex where pitch, loudness, and specific sounds are recognized

Question 21

Cortical deafness

Answer 21

inability to percieve sounds despite intact ears

Question 22

Auditory verbal agnosia/ word word deafness

Answer 22

inability to perceive words

-can still speak, write, and hear sounds

Question 23

Amusia

Answer 23

Inability to recognize or reproduce music

Question 24

Amusia

Answer 24

musical disorder that is the Inability to recognize or reproduce music

Question 25

What are the two types of amusia?

Answer 25

Congenital: tone deafness
Acquired: due to organic brain damage

Question 26

Perfect/Abuse Pitch

Answer 26

ability to indentify or recreate musical notes

Question 27

Dorsal

Answer 27

Where things are

Question 28

Ventral

Answer 28

What things are, percieves what an item is

Question 29

Scotoma

Answer 29

A partial loss of vision or blind spot