This is a really interesting article that suggests people with debilitating dementias still exist, on some level, in their mind, and can communicate through alternative means. My maternal grandmother had a long battle with Alzheimers, and the one time I saw her after her descent, she thought I was my mother, and didn’t recognize Mom at all. I wonder if it would have been easier for the family if she had had an alternative form of therapy like this, available for communicating with everyone? Perhaps she would have had her own directions to her daughter’s house.