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Flashcards in Audition Deck (45):
1

What layer is thick in A1?

Granular layer

2

What area makes up A1?

41

3

Where is A1 found?

Inside the lateral sulcus

4

What will a lesion to A1 cause?

Loss of ability to localize sound of specific frequency that was lesioned

5

What streams travel along the dorsal pathway of A1?

- Where
- How

6

What is the function of the dorsal pathway of A1?

Localizes sound sources and references them for movement

7

What stream travels along the ventral pathway of A1?

What stream

8

What is the function of the ventral stream?

Linguistic functions

9

Where is the ventral stream found?

- Uncinate fasciculus
- Arcuate fasciculus
- Temporal and frontal lobe

10

What are the 2 language centers?

- Broca's
- Wernicke's

11

What areas make up Broca's area?

44 and 45

12

What areas make up Wernicke's area?

22

13

What is the function of Broca's area?

Compiles final imprint to be expressed as speech

14

Where does Broca's area send its "final imprint"?

To the motor cortex

15

What is the function of Wernicke's area?

Comprehends written/ verbal language

16

Which lobe tends to be dominant for language centers?

The left

17

What structure connects the 2 language centers?

Arcuate fasciculus

18

Which language center cannot function without input from the other?

Broca's

19

What is the pathway for repeating a spoken word according to the Wernicke - Geschwind model?

Auditory complex --> Wernicke --> Associative/ Broca --> Motor

20

What is the pathway for repeating a written word according to the Wernicke- Geschwind model?

Primary visual --> Angular --> Wernicke --> Broca --> Motor

21

What is aphasia?

Loss of language abilities (cognitive and motor control often still present)

22

What is anomia?

Can't find the right word

23

What is alexia?

Inability to read

24

What is agraphia?

Can't write

25

What is dysarthria?

Can't use muscles of speech

26

What is destroyed in Pure Word Deafness?

- A1 bilaterally

27

What is Wernicke's area disconnected from in Pure Word Deafness?

- Auditory input

28

How can the individual still hear with destruction of A1?

Through thalamus and subcortical centers (amygdala

29

Which language center is affected in Motor Aphasia?

Broca's

30

Which language center is affected in Sensory Aphasia?

Wernicke's

31

In which aphasia can the individual understand speech, but can't produce it?

Broca's

32

Which aphasia produces a flat melodic intonation?

Broca's

33

Which aphasia produces neoligistic jargon?

Wernicke's

34

Which aphasia produces short senteces with pauses?

Broca's

35

Which aphasia produces perfect speech does not make any sense/

Wernicke's

36

Which aphasia produces fluent speech with substitutions that are phonetically similar?

Conduction aphasia

37

Which aphasia produces impaired sequencing?

Conduction aphasia

38

What is lesioned in Alexia without Agraphia?

Splenium of corpus callosum
- Left occipital lobe

39

What other symptom accompanies alexia without agraphia?

Visual field loss on right side

40

What is lesioned in Agraphia?

- Parietal lobe

41

What language area does the parietal lobe communicate with to form graphemes (coordinates of written language)?

Wernicke's

42

What is lesioned in Alexia with Agraphia?

- Angular cortex

43

What is performed by the precentral gyrus of the insula?

Articulatory planning

44

What is the function of the middle temporal gyrus and fibers?

Semantics

45

What is the function of Anterior Area 22?

Comprehension of complex grammer