Grandpa's power to see objects that are not really there, is 
from stage 3 of the Parkinson's disease.  Grandpa can touch 
and change the position of the objects, when he can reach them;  
the object often move away from him.   He tells me that the 
objects continue to move around and he can't feel anything when 
he touched them. 
Our first conversation about his hallucinations started when we where 
watching TV and he started placing his hand in front of his face.  
He saw me looking at him and he asked me, "Is it OK if I do this, 
does it bother you."  I said, "no" and I asked him to tell me more 
about what he sees.  I'm calling his ability to manifest objects, 
he's special powers.  He told me, he could see the objects better 
when his tired right before he's ready to go to bed.  After he 
finished coughing, he handed me something and I pretended to told it, 
just like you would hold a single flower.  He placed a couple of 
small pieces of torn tissue on the side of the bed and told me to 
watch.  he started to strongly stare at the tissue and he could 
see a one piece of tissue fly away. He said, "Did you see it fly 
away?" I said, "No, but I wish I could." Arrow head object is a 
lamp on the wall but to Grandpa its four or five black boxes in 
the space of an arrowhead; we agreed to name it arrowhead.

He asked me, "Do witch's go to heaven?" and I said, "yes, everyone 
with special powers go to heaven."  

I see him play with the objects and I see him trying to understand 
he can see them and I can't.  He doesn't understand where they come 
from or why, but I can see him thinking, just like he was thinking 
about a wood shop project.

As the night continued into the early hours of the morning, he was 
extremely persistant in going home and find the car to get there.  
we walked all around the hospital as he tried to find a exit to 
leave.  I walked him back to his room, but he couldn't walk in 
the door.  He told me that he didn't want to disturb the three 
people in his bed and he wanted to go sleep some place else.  We 
walked down to the waiting room and watched TV and we talked 
about the three people in his bed. 

I started to realize that his special power was continuing to get 
stronger and strong as he became more tired.  He was becoming more 
ferastated that he couldn't go to the car and go home.