Where one part of the mind acts on behalf of another to do it's work for it...
This is commonly associated with lobotomies where a part of the brain is removed yet the action carried out by that section is performed by another part of the brain.
What I am suggesting is that one part acting where another part normally does happens whether you remove that part of the brain or not.
As that part of the brain (while unremoved) can be acted on by another compensating part, it acts like a remote control for that area. This is as it acts from another area to influence the regular area associated with that other area.
You don't necessarily need a part from your brain to be removed for another part of the brain to act partly on it's behalf.