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Lesions to Cerebral Cortex

 

Brodmann’s

Name

Result of Lesion

1,2,3

Primary somesthetic area

Contralateral impairment of touch, pressure, propioception

4

Primary motor cortex

Contralateral flaccid paralysis

6

Supplementary motor cortex

Spasticity, increased DTRs

8

Frontal eye fields

Loss of voluntary movement of eyes to contralateral field

17,18,19

Visual cortex

Contralateral visual field loss, visual agnosia

22

Wernicke’s area

Receptive aphasia (dominant hemisphere)

39

Angular gyrus

Alexia, agraphia, (dominant hemisphere)

 

40

 

Supramarginal gyrus

Tacticle/propioceptive agnosia, apraxia, left/right confusion (dominant hemisphere)

41,42

Auditory area

None (hearing is bilaterally represented)

44,45

Broca’s area

Expressive aphasia (dominant hemisphere)