Minimal self-models and the free energy principle.

Minimal phenomenal selfhood (MPS) is the basic, pre-reflective experience of being a self, emerging from self-modeling mechanisms rooted in bodily processes. The free energy principle (FEP) describes how self-organizing systems optimize hierarchical generative models of sensory causes by minimizing free energy. Predictive coding and active inference within the FEP highlight the role of embodiment for predictive self-modeling. This review maps MPS onto a hierarchical generative model under the FEP, explaining key constituents like multisensory integration, interoception, agency, perspective, and mineness. The authors conclude that this framework may underlie higher-level cognitive self-referral and understanding other minds.

Study at a glance

Abstract

The term "minimal phenomenal selfhood" (MPS) describes the basic, pre-reflective experience of being a self (Blanke and Metzinger, 2009). Theoretical accounts of the minimal self have long recognized the importance and the ambivalence of the body as both part of the physical world, and the enabling condition for being in this world (Gallagher, 2005a; Grafton, 2009). A recent account of MPS (Metzinger, 2004a) centers on the consideration that minimal selfhood emerges as the result of basic self-modeling mechanisms, thereby being founded on pre-reflective bodily processes. The free energy principle (FEP; Friston, 2010) is a novel unified theory of cortical function built upon the imperative that self-organizing systems entail hierarchical generative models of the causes of their sensory input, which are optimized by minimizing free energy as an approximation of the log-likelihood of the model. The implementation of the FEP via predictive coding mechanisms and in particular the active inference principle emphasizes the role of embodiment for predictive self-modeling, which has been appreciated in recent publications. In this review, we provide an overview of these conceptions and illustrate thereby the potential power of the FEP in explaining the mechanisms underlying minimal selfhood and its key constituents, multisensory integration, interoception, agency, perspective, and the experience of mineness. We conclude that the conceptualization of MPS can be well mapped onto a hierarchical generative model furnished by the FEP and may constitute the basis for higher-level, cognitive forms of self-referral, as well as the understanding of other minds.