What meaning does the use of a verb in the middle voice convey in a sentence?

The use of the middle voice conveys that the subject of the verb is doing the action upon themselves or for themselves. It often has a reflexive quality: παυομαι = I stop myself i.e. I cease. It can also convey the sense that the action brings a benefit or advantage to the subject: φερομαι = I carry off for myself, I win.