Cerebral vascular disease leading to strokes is a distinct process from chronic brain hypoperfusion, characterized by acute events and functional deficits.

“the first is cerebral vascular disease that leads to strokes occlusive or hemorrhagic which that's a separate disease because it tends to produce an acute event goreck that is the result of an acute hypoperfusion that usually produces a much more functional deficit so it's almost like you can think of that as a quote-unquote brain attack the way we think of a heart attack correct”