I'm wondering if there are any studies on how (or if) the position of the head changes our thoughts or dreams. Mainly I mean when lying down, as I experienced it is hard to keep the thoughts that where there moments ago when I turn from one side to another in bed. I guess this can be explained by how the blood flows in our brains, that one side gets more blood than the other when lying on your side. But does that mean you could influence your dreams by your sleeping position? Would you react differently to outside influences depending on what your head position is?
I have to mention I have no knowledge at all in these kind of stuff and I'm just asking out of curiosity. Does anyone know about something like this?