The Fluid Boundaries of the Self: Attenuation, Hybridization, and the Three EGOs in the Sensorimotor Matrix

Abstract This article constitutes the final monograph of the Integrated Theory of Mind (TIM) dedicated to analyzing the phenomenology of Identity and the Vectors of Interaction: The Three EGOs. To guarantee epistemological coherence with the six previous Structural Nodes, the investigation is rigorously divided into two domains. In the Cognitive-Informational Domain, we will explore the fluid logic of Identity. We will demonstrate how the Self does not rigidly coincide with the epidermis, but is an elastic interface anchored to the Axiom of Gravity. We will explain the computational clash between solipsistic isolation (Sensory Attenuation) and connection with the world (Hybridization), defining the logic of the Three EGOs (Agens, Socialis, Cogitans) guided by the helm of Attention. In the Biophysical Domain, we will descend into the anatomy of the brain to map the exact neural networks of this expansion. By revealing the infrastructure of Peripersonal Space (PPS), the Insula, and the Default Mode Network (DMN), we will demonstrate how brain matter creates abstraction and empathy. Finally, we will unveil the two biological lifesavers that prevent the psychotic disintegration of the Self: the motor brake of the Subthalamic Nucleus (STN) and the topological calculator of the Temporoparietal Junction (TPJ). Keywords: Integrated Theory of Mind (TIM), Three EGOs, Sensory Attenuation, Peripersonal Space (PPS), Default Mode Network (DMN), Insula, Temporoparietal Junction (TPJ), Subthalamic Nucleus (STN).