Our perception is based on the impression that our “self” is located in the same position as our bodies; in other words, the feeling of embodiment, of living in a body, of being located within the physical confines of a body. This feeling is not governed by an isolated sensory organ, but depends on multisensory afferences. We study this feeling by looking at the contribution of audio and vestibular interactions in the perception of our own body, using zero gravity conditions created during parabolic flights. In zero gravity vestibular indices are naturally troubled and this may modify the feeling of unity between the feeling of “self” and one’s own body. In other words, this may modify the perception of your body as a spatial reference.