brain cell death alone as far as I know (and I do seem to know a lot) does not trigger such extreme hallucinations
Id just like to point out that brain cell death can cause you to trip. (I know thats not what causes the trips people have on computer duster.) I read that upon the death of brain cells, a brain cell killing amount of glutamate is released and the brain has to release some sort of glutamate receptor blocking chemical (which works like ketamine/pcp/dxm) in order to protect the neighboring cells from the chain reaction of brain cell death that would follow the release of glutamate.