functional neuroanatomy of speech and language W5

Question 1

models of speech and language?

Answer 1

auditory/visual signals -> language comprehension -> motor programming

Question 2

specialised areas for speech?

Answer 2

Wernicke’s area (sensory)
Broca’s area (motor programming)

Question 3

Wernicke’s area - location inputs and function

Answer 3

location = posterior temporal lobe
inputs = sound of words sent from auditory pathways, visual representations of words from visual pathways
function = temporal speech/language comprehension

Question 4

Broca’s area location inputs and outputs

Answer 4

location = dominant inferior frontal gyrus
inputs = temporal and parietal lobes via arcuate fasciculus
outputs = cranial nerve nuclei in pons, medulla controlling bulbar muscles

Question 5

3 types of dysphasia and location of issue

Answer 5

expressive dysphasia (Broca’s area)
receptive dysphasia (Wernicke’s area)
conduction dysphasia (arcuate fasciculus)

Question 6

conduction dysphasia?

Answer 6

intact comprehension and fluent speech, but poor speech repetition

Question 7

expressive dysphasia?

Answer 7

effortful and broken speech
comprehension may be intact

Question 8

receptive dysphasia?

Answer 8

difficulty understanding language
fluent and effortless speech, but may lack meaning