>At carnival time, the unique sense of time and space causes the individual to feel he is a part of the collectivity, at which point he ceases to be himself.
Many cultures throughout history dressed as spirits or demons in order to channel and be possessed by them. Maybe that is why they cease to be themselves?
Dressing in a specific costume or mask to embody, merge with, or act as a conduit for a supernatural entity is broadly known in anthropology and religious studies as ritual masking, masquerading, or mimetic possession