Can neurons divide if somehow centrioles are introduced in nerve cells?
Induced Pluripotent Cells
https://en.wikipedia.org/wiki/Induced_pluripotent_stem_cell?wprov=sfla1

You should probably look into this. This introduces what is called iPSCs, which are stem cells derived from adult cells. 

What it is is that  they use signals that are found in embryonic cells, and the adult cells revert from their differentiated form into cells that can become virtually anything.