A neuroscientific perspective on the nature of altered self-other relationships in schizophrenia

By empirically investigating the neural correlates of the basic experience one makes of oneself as bodily self and of its alterations, new light can be shed on the relationship between self-disturbances and social deficits in schizophrenia. We review recent neuroscientific evidence showing how a pre-reflective, experiential understanding of others can be accomplished, so that others are conceived as bodily selves by means of neural reuse of our own sensorimotor and visceromotor resources, and how a clear distinction between self and other is normally preserved. By conjugating identity and alterity, a putative neural mechanism is provided underpinning the blurring of such distinction in schizophrenic patients. The reviewed empirical data suggest brain function anomalies at the levels of multisensory integration, differential processing of self- and other-related bodily information, and mediating self-experience at the basis of an imbalance in the pre-reflective relationship of the embodied self to the world including the social environment.