A elderly woman I know was on the telephone recently. Her nephew was asking if he could come and stay. "Sounds good to me" she said, "But I'd better check, I have some dementia you know"! Closer to 90 than 80 and, at the time, able to have some perspective on her condition. Over the past days that has changed.
The issue of Neurodegeneration is exercising the scientists around the world including Walter at Evolving Space. Thanks for the input and for whatever it is you do...and have done.
The merit of this posting is offered to the elderly woman mentioned above, and for her husband and extended family.