Block 4

Question 1

Broadman’s area 3, 1, 2

Answer 1

Primary somatosensory cortex.

Lesion causes contralateral loss of sensations.

Question 2

Broadman’s area 4

Answer 2

Primary motor cortex.

Lesion causes contralateral spastic paralysis.

Question 3

Broadman’s area 17

Answer 3

Primary visual cortex.
Lesion causes contralateral hemianopia.
Upper/lower lesion corresponds to quadrantanopia.

Question 4

Broadmans’s area 41 and 42

Answer 4

Primary auditory cortex.

Bilateral lesion leads to loss of hearing.

Question 5

Broadman’s area 44 and 45

Answer 5

Broca’s area.
Left lesion causes Broca’s aphasia.
Right lesion causes difficulty expressing the emotional aspect of language.

Question 6

Broadman’s area 5, 7, 39, 40

Answer 6

Parietal association cortex.
Left lesion causes astereogenesis (40), and aphasia, alexa, agraphia (39).
Right lesion causes spatial distortion and contralateral neglect.

Question 7

Broadman’s area 18

Answer 7

Occipital association cortex.

Lesions cause a variety of visual defects.

Question 8

Broadman’s area 22

Answer 8

Temporal association cortex.
Dominant side lesion causes Wernicke’s aphasia.
Non-dominant side lesion causes difficulty in comprehending the emotional aspects of language.