I have actually heard of weird things like this happening but it is utmost rare, assuming it is even possible. People supposedly have woken up from surgeries or comas and have British accents while having never vistied the UK or even been around British native people in their lives.
It ranks up there in the genre of topics for late night radio of Close Encouters of the Extraterrestrial Kind........
“West of the Rockies.......caller.....you’re on the air.....”
Accents come from how we pronounce and how long we hold our vowel sounds. A stroke just may cause your speech to sound like a different accent.
““West of the Rockies.......caller.....you’re on the air.....”
The great Art Bell did around 3 episodes about spirits “invading” another person. I befriended a dude on KFI here in L.A. who would give us the tapes many years ago for free, and the subject would be broadcast days before Ghost to Ghost.