Senile amplification

Today I was with my grandfather.  He's in his late 80's.  He is still fairly sharp, but somewhat senile.  Senility is interesting in that it seems to, in my opinion, amplify characteristics of individuals.  My grandpa was always a little perverse, now that's he's older and less at himself he's a raging perv.  He is convinced he's fathered the baby of one of his former care givers, he has been in trouble for grabbing workers in inappropriate areas and every conversation ends back up at sex.  On the other hand an elderly woman I know has only become kinder and sweeter as she slowly loses her mind.  My theory is that senility or simply the degradation of neuronal cells decreases our ability to consciously control what we say or do.  For this reason, elderly tend to exhibit more of their base personality than they would if they had the ability to inhibit that which they know to be socially wrong or unacceptable. So that begs the question, when you are senile, when I am senile, what will we begin to exhibit? Will be only get nicer and more compliant, will we be cranky and angry, will we be a pervert, what will we be like?