Hi, Chimera1! (I've been on medications for a long time, so you have to take my answer within that frame.) My primary experience of depression is that of a continuous, somewhat low mood wedded to a "vast emptiness" and apathy with associated psychomotor slowing. Every once in a while I do experience moments of elevated mood, which quickly dissolve, and "spells" of deep shock - like being punched in the gut - that leave me mute and sometimes floored (literally).

Yes, I have multiple diagnoses and there's some sort of neurological component to my case, but the docs haven't agreed what it is.

No matter what your flavor of depression, it sucks.