  Nevertheless, this view also has some problems. For one thing, it's unclear that psychological continuity alone is sufficient for ownership. Suppose Johann's fugue state (turning into the psychologically very different Sebastian) developed gradually, as the result of a brain tumor.  We still would likely deny that Sebastian is the owner of Johann's actions, despite their now psychological continuity.  And it also seems possible that psychological continuity isn't necessary for ownership either. Suppose someone were to undergo a brain trauma causing psychological discontinuity. Depending on how the case were filled in, it may be that certain actions performed prior to the discontinuity would still be judged hers in the relevant sense. As long as they flowed from a central aspect of the agent's character that remained in place, we might say, they are properly attributable to her regardless of the other psychological discontinuities that have taken place.