My last bet would be parietal....
Septic emboli or all sorts of crap that shoots from the heart up lodges in the MCA distribution, cuz thats the most straight vessel on the way from carotids.
Spatial neglect is caused by a lesion in a dominant parietal lobe, but thats truly not the most common presentation of a systemic emboli.
I dont trust Kaplan.
Ambition is a dream with a V8 engine. EP