It's like he doesn't understand what I just said. Talking about and idea on how to do something or paint something. I say my piece, and then he continues the conversation and by the end of what he said, I am frustrated, because it's the same details I was talking about. he's almost 63. I have started noticing it recently, because I keep saying "That's what I just said". Sure this can happen sometimes, but I feel like he isn't understanding or hearing what I am saying. We have always enjoyed conversation, so it has me concerned. He also suffered from a head injury, from car accident, when he was a teenager. Wondering if maybe some kind of dementia is setting in. I do not think it's selective listening, because he seems engaged in the conversation.