The original interpretation has to be evaluated within its own cultural context of course. An adherant of an animist religion might be quite used to viewing and 'communicating' with plant, insectoid and animal 'entities', with the aid of trance, meditation or psychedelic sacrements, and thus for them seeing such entities might be fairly normal and healthy. Indeed, in such a society, being only able to relate to humans might be seen as a blinkered form of mental illness.