In regard to the thinking and memory, at first he seemed forgetful and had trouble with dates.  Now he seems less spontaneous and his family states he seems to have trouble expressing himself.  His wife took over his medications about two years ago.  She stopped his driving about three years ago.  She discovered that his license had been expired for about a year and she was concerned enough at that time that she told him he could drive no more.  Apparently, he did not object.  At this point, he frequently has trouble with memory, orientation, and everyday problems solving at home.  He needs coaching for his daily activities such as reminders to brush his teeth, put on his clothes, and so forth.  He is a retired office machine repairman.  He is currently up and active about 12 hours a day and sleeping or lying down about 12 hours per day.