"Shortly after the accident, it became clear that PA had lost much of his memory; he didn't recognize his family..."

"... and the woman he'd been cheating with � whom he'd gone so far as to proclaim the 'love of [his] life' � was now a stranger to him, too. But more than that, it appeared he'd lost his own sense of self. He tended to 'cling to the identities of others,'his physicians write in the case report, by which they mean that he often believed he was whoever he happened to be around at the moment."