This is a bit difficult to describe but anyway.
When Im relaxed, e.g. quitely typing, along with somebody else doing something , as well as perfect silence (other than a person quietly speaking/ doing something), I sometimes get this sensation in the back of my head.
Now its only when im relaxed, and sitting quietly with few others around, But its REALLY nice, i cant really force it to happen, it just does.
Anybody know why this happens, or anybody get the same sensation?
I get it probably around twice a month.