8. Cortical dysfunction Flashcards Preview

ESA 4- Nervous system > 8. Cortical dysfunction > Flashcards

Flashcards in 8. Cortical dysfunction Deck (4):
1

What is Broca's dysphasia? How is it caused and how will Ps present?

Difficulty in expressing language as a result of lesion in frontal lobe (Broca's area) in dominant hemisphere (usually left).

Can be caused by disease (vascular, neoplastic or degenerative) or trauma (head injury). 85% caused by stroke - more common in elderly.

Symptoms:
- slow and halting speech (but good semantic content)
- comprehension usually good
- awareness of language difficulties

2

What is Wernicke's dysphasia? How is it caused and how will Ps present?

Difficulty in language comprehension as a result of lesion in temporal lobe (Wernicke's area) in dominant hemisphere (usually left).

Can be caused by disease (vascular, neoplastic or degenerative) or trauma (head injury). 85% caused by stroke - more common in elderly.

Symptoms:
- fluent speech lacking semantic content (talk nonsense)
- unaware of speech difficulties

3

What would be the effect of removal of the hippocampus?

inability to form new declarative memories

4

what is meant by the term 'split-brain P'?

P in whom corpus callosum has been severed, e.g. to treat refractory epilepsy. Causes inability of the 2 brain hemispheres to communicate.