 The second reason focuses on the spatial organization of bodily awareness (Bonnier 1905; O’Shaughnessy 1980, 1995; Murillo Lara 2018). Over an extended period, all bodily experiences share the same spatial content of the structural shape of the body. To account for this commonality, O’Shaughnessy posits the existence of a long-term body image that plays a structural role in spatially shaping bodily experiences. One may then propose a hierarchical model of body representations on the model of Marr’s theory of vision: the primal sketch, the 2.5D sketch, and the 3D sketch (Marr 1982). At each step, more information is extracted from the original sensory input until it switches from a viewer-centered perspective to an object-centered perspective. At each stage, the representation of the body gains in complexity and spatial richness (Longo 2017; Haggard et al. 2017). The level of the primary somatosensory area (SI) corresponds to the primal body sketch, which takes the shape of a “homunculus” (Penfield &amp; Rasmussen, 1950). Although it generally follows natural anatomical divisions, associating cortical areas to specific parts of the body, some are over-represented (e.g., hand), and others under-represented (e.g., torso). Furthermore, the homunculus does not represent anatomical contiguity (e.g., the hand-specific area is next to the face-specific area). Consequently, the primal body sketch cannot play the role of supplying information about body metrics and configuration (Medina &amp; Coslett 2016). This is done at a higher level of integration (integration among body parts and among multiple sensory sources), at which a kind of 3D body sketch is generated. Its function is to reliably covariate with the spatial organization and dimensions of the body and its segments, in order to spatially organize information coming from the body senses. This level of body representation is partly independent from online inputs.