" there have been many cases where someone who got a donated organ took on personality traits of the donor"
And in the main the changes in the person could also be attributed to the immunosuppression drugs they also need to take, from change in hair textures and lightening or darkening, changes in taste to loss of fingerprints(seriously).
So how much is the Donor families parents wanting to see something of their lost one in the recipient?
How much is the drugs?
And oh course if you have been on a waiting list that has to change you as a person and then been given such a gift from people who are in grieving and loss.
That has to affect most people deeply.
I know a few people who have had organ transplants, 2 became much more extrovert, travelled, felt very strongly that that had to make the most of what they had been given.
One became much more introverted, felt very much that they had been given this precious gift and had to protect it at all costs. No foreign holidays (just in case they got delayed and ran out of meds)actually lots of just in cases, but hey they were happy.
Ps: Foreign accent syndrome, very rare, is due to brain damage, and recent research has shown that the person isn?t actually talking in a foreign accent more that their pattern of speech has changed and it is how the listener interprets it . This is why Linda Walker a lady from Newcastle(post stroke) is described as having a Jamaican, French Canadian, Italian, and a Slovakian accent dependent on who is doing the listening . . .
There has been no verified case where a patient's foreign language skills have improved after a brain injury or suddenly developed the ability to speak a new language.
Personally, once I get to a point where I cant express my own needs/wants, be it because of injury or disease thay can take what they want.