Standing upon Leonardo Polo's interpretation about Aristotle's doctrine on sensitive cognition, some aspects of the sensorial organical inmuta-tion required in it are examined, and a thesis concerning de common sense as center and root of sensibility –not only exterior, but also inte-rior– is suggested. According to this thesis, even the sensorial and orga-nical inmutations belonging to the other internal senses can return to de organ of the common sense, which becomes the central and radical or-gan. Therefore all sensible objectivation should take place in the common sense. This conclusion does not agree with Polo's position