Cerebral cortical function

Question 1

what is neglect syndrome? where is the lesion that causes it?

Answer 1

1. deficit in self image of contralateral side of body 2. posterior parietal lobe in non-dominant hemisphere

Question 2

what is asomatognosia? where is the lesion that causes it?

Answer 2

1. when patient lacks awareness of the condition of all or part of his body 2. parietal lobe

Question 3

what is astereognosis? where is the lesion that causes it?

Answer 3

1. inability to identify objects by feeling them 2. somatosensory cortices in parietal lobe

Question 4

which cerebral hemisphere is usually responsible for affective components of language?

Answer 4

left

Question 5

definition: abulia

Answer 5

1. loss or impairment of the ability to perform voluntary actions and make decisions 2. feature of medial frontal / anterior cingulate gyrus dysfunction

Question 6

definition: akinetic mutism

Answer 6

1. patient does not move or speak even though they are awake 2. feature of medial frontal / anterior cingulate gyrus dysfunction

Question 7

definition: perseveration

Answer 7

1. tendency to continue with one form of behavior when situation would require new, changed response 2. feature of prefrontal syndrome (dorsolateral)

Question 8

definition: frontal release signs

Answer 8

1. release of primitive reflexes such as suckling, grasp 2. feature of prefrontal syndrome

Question 9

agnosia is usually related to what areas?

Answer 9

association cortices

Question 10

what are the key features of broca’s aphasia?

Answer 10

1. halting speech 2. disordered syntax, grammar 3. comprehension intact

Question 11

what are the key features of wernicke’s aphasia?

Answer 11

1. fluent speech 2. adequate syntax, grammar 3. comprehension NOT intact