4.8 Article

Re-cognizing the new self: The neurocognitive plasticity of self-processing following facial transplantation

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NATL ACAD SCIENCES
DOI: 10.1073/pnas.2211966120

Keywords

self-recognition; face; facial transplantation; self identity

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The face is crucial for our social interactions and personal identity. However, what happens when our face is radically altered or replaced? This study explores the plasticity of self-face recognition in the context of facial transplantation. Neurobehavioral evidence suggests that the transplanted face gradually becomes recognized as the recipient's own new face, supported by neural activity in regions associated with self-perception.
The face is a defining feature of our individuality, crucial for our social interactions. But what happens when the face connected to the self is radically altered or replaced? We address the plasticity of self-face recognition in the context of facial transplantation. While the acquisition of a new face following facial transplantation is a medical fact, the experience of a new identity is an unexplored psychological outcome. We traced the changes in self-face recognition before and after facial transplantation to understand if and how the transplanted face gradually comes to be perceived and recognized as the recipient's own new face. Neurobehavioral evidence documents a strong representation of the pre-injury appearance pre-operatively, while following the transplantation, the recipient incorporates the new face into his self-identity. The acquisition of this new facial identity is supported by neural activity in medial frontal regions that are considered to integrate psychological and perceptual aspects of the self.

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