Somatoparaphrenia: evolving theories and concepts.

Somatoparaphrenia, a syndrome that involves at a minimum unawareness of ownership of a body part, in addition involves productive features including delusional misidentification and confabulation. In this review we describe some of the clinical and neuroanatomical features of somatoparaphrenia highlighting its delusional and confabulatory aspects. Possible theoretical frameworks are reviewed taking into account cognitive, psychodynamic, and philosophical views. We suggest that future studies should approach this syndrome through investigations of structural and functional connectivity and focus on the possible interplay between alterations in major functional networks of the brain, such as the default mode and salience networks, but also take into account motivational variables.