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Self model
The self-model is the central concept in the theory of consciousness called the self-model theory of subjectivity (SMT). This concept comprises experiences of ownership, of first person perspective, and of a long-term unity of beliefs and attitudes. These features are instantiated in the prefrontal cortex. This theory is an interdisciplinary approach to understanding and explaining the phenomenology of consciousness and the self. This theory has two core contents, the phenomenal self-model (PSM) and the phenomenal model of the intentionality relation (PMIR). Thomas Metzinger advanced the theory in his 1993 book ''Subjekt und Selbstmodell'' (Subject and self-model).〔Metzinger, T. (1993). ''Subjekt und Selbstmodell''. Paderborn: Schoningh.〕
==Brief Overview of the PSM==
The PSM is an entity that “actually exists, not only as a distinct theoretical entity but something that will be empirically discovered in the future- for instance, as a specific stage of the global neural dynamics in the human brain” . Involved in the PSM are three phenomenal properties that must occur in order to explain the concept of the self. The first is mineness, “a higher order property of particular forms of phenomenal content,” or the idea of ownership.〔Being No One〕 The second is perspectivalness, which is “a global, structural property of phenomenal space as a whole”.〔Being No one〕 More simply, it is what is commonly referred to as the ecological self, the immovable center of perception. The third phenomenal property is selfhood, which is “the phenomenal target property” or the idea of the self over time. It is the property of phenomenal selfhood that plays the most important role in creating the fictional self and the first person perspective. Metzinger defines the first person perspective as the “existence of single coherent and temporally stable model of reality which is representationally centered around or on a single coherent and temporally stable phenomenal subject”.〔 The first-person perspective can be non-conceptual and is autonomously active due to the constant reception of perceptual information by the brain. The brain, specifically the brainstem and hypothalamus, processes this information into representational content, namely linguistic reflections. The PSM then uses this representational content to attribute phenomenal states to our perceived objects and ourselves. We are thus what Metzinger calls naïve realists, who believe we are perceiving reality directly when in actuality we are only perceiving representations of reality. The data structures and transport mechanisms of the data are “transparent” so that we can introspect on our representations of perceptions, but cannot introspect on the data or mechanisms themselves. These systemic representational experiences are then connected by subjective experience to generate the phenomenal property of selfhood. Subjective experience is the result of the Phenomenal Model of Intentionality Relationship (PMIR). The PMIR is a “conscious mental model, and its content is an ongoing, episodic subject-object relation”.〔 The model is a result of the combination of our unique set of sensory receptors that acquire input, our unique set of experiences that shape connections within the brain, and our unique positions in space that give our perception perspectivalness.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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