Who are we talking to?

Have you ever thought about thinking. Or to be more precise, the way you think. You speak within your head and as said, thinking is lingual. Right?

Well it occured to me today, while thinking and then thinking about that thinking, that I'm actually talking to...yes, to whom or what?!

Thoughts are sentences, mostly, and said out loud within your head. But who says them, or what. You? If you say them, who is the one that understands them. You?

My question is - one maybe already answered by some psychologist or behavioral scientist or someone - who is talking to whom or what when we think?

piano