Lesion localization

Question 1

A stroke is broodily defined as?

Answer 1

Loss of blood supply to brain tissue? tissue dysfunction and death

Question 2

what are the two types? What are there mechanisms?

Answer 2

Ischemia (blood vessel blockage) Most Common; Haemorrhage (blood vessel rupture)

Question 3

Branches of cerebral arteries can?

Answer 3

Branches of cerebral arteries penetrate into the deep brain matter from the surface

Question 4

nerve fibber ascend and descend from the cortex in what four structures?

Answer 4

internal capsule; Crus cerebri; Pyramidal decussation; Lateral and ventral corticospinal tracts

Question 5

describe lateralization

Answer 5

many cortical functions are predominately controlled by one cerebral hemisphere

Question 6

describe broca’s aphasia

Answer 6

damage to broca area in left frontolateral cortex; marked difficulty in producing coherent speech; speech comprehension is intact; and patient is conscious of difficulties with language

Question 7

Describe Wernicke’s aphasia

Answer 7

damage to Wernicke’s area in posterior region of superior temporal gyrus; marked difficulty n speech comprehension; speech is fluent but disjointed to completely meaningless; patient is often unconscious of difficulties with language

Question 8

describe conduction aphasia

Answer 8

damage to acuate fasciculus connecting Wernicke’s area to Broca’s area; characterized by inability to repeat aloud what has been heard; speech is fluent but disjointed to completely meaningless; comprehension of speech and written language is largely intact