Sorry, I was too lazy to retype the poem. Here's Level II or another twist on J280. I would suggest that there is still another level, but we'll leave it open to discussion. Of course, whether Dickinson was Schizophrenic or not, we will probably never know. These voices are usually persecutory and sexual in nature and tend to tell the patient things to do.
Schizophrenics go to great lengths to avoid taking medication.
They even tend to smoke a lot which has been shown to lower the effectiveness of anti-psychotic medications. Whether or not this poem is about this particular loss of identity, I obviously can't say, but I would suggest that it CAN be seen as A loss of consciousness. This repression can, of course, be due to ANY painful experience, and is universal in nature. So it is that a funeral in the brain is a good metaphor for the disintegration of consciousness. In the first stanza, the speaker reflects upon the process of decompensation.