I think this points to a specific amount of accent "modes" for languages in the human brain. There's a small finite amount and the human brain can only operate within the bounds of a single accent "mode."
When you damage one accent "mode" in your brain, it has to switch to the next available one. Since the amount of accent "modes" are small and finite you get people who switch to a mode that is recognize-able and used in another part of the world that speaks the same language with a different accent.
When you damage one accent "mode" in your brain, it has to switch to the next available one. Since the amount of accent "modes" are small and finite you get people who switch to a mode that is recognize-able and used in another part of the world that speaks the same language with a different accent.