Recognising and representing one’s self as distinct from others is a fundamental component of self-awareness. However, current theories of self-recognition are not embedded within global theories of cortical function and therefore fail to provide a compelling explanation of how the self is processed. We present a theoretical account of the neural and computational basis of self-recognition that is embedded within the free-energy account of cortical function. In this account one’s body is processed in a Bayesian manner as the most likely to be “me”. Such probabilistic representation arises through the integration of information from hierarchically organised unimodal systems in higher-level multimodal areas. This information takes the form of bottom-up “surprise” signals from unimodal sensory systems that are explained away by top-down processes that minimise the level of surprise across the brain. We present evidence that this theoretical perspective may account for the findings of psychological and neuroimaging investigations into self-recognition and particularly evidence that representations of the self are malleable, rather than fixed as previous accounts of self-recognition might suggest.

Key words: self-recognition, self-awareness, voice recognition, face recognition, body ownership, bayesian, free energy, predictive coding, prediction error, rubber hand illusion, enfacement

This paper examines the experience of where we end and the rest of the world begins, that is, the sense of boundaries. Since meditators are recognized for their ability to introspect about the bodily level of experience, and in particular about their sense of boundaries, 27 senior meditators (those with more than 10, 000 hours of experience) were interviewed for this study. The main conclusions of this paper are that (a) the boundaries of the so-called “physical body” (body-as-object) are not equivalent to the individual’s sense of boundaries; (b) the sense of boundaries depends upon sensory activity; (c) the sense of boundaries should be defined according to its level of flexibility; (d) the sense of body ownership (the sense that it is one’s own body that undergoes an experience) cannot be reduced to the sense of boundaries; nevertheless, (e) the sense of ownership depends on the level of flexibility of the sense of boundaries.

Key words: boundaries, mindfulness, sense of boundaries, sense of ownership.

Context: Although trauma research has advanced immensely, the struggle to find effective treatment for posttraumatic survivors continues. It seems reasonable to say that, at present, our ability to treat those suffering from posttraumatic stress disorder (PTSD) is, at the very least, limited. Problem: We argue that in order to confront the current crisis in the study of trauma - evidenced by our limited ability to offer successful treatment for those who develop PTSD - we must return to the subjective experience. Our claim is that only by applying a rigorous method to study the subjective experience will we be able to understand the meaning of neuronal activity associated with PTSD. Method: The neurophenomenological research program (NRP) is a working plan that enables us to create a solid and reliable link between the subjective experience and neuronal activity. Thus, the NRP allows us to (a) delve deeply (and rigorously) into the subjective experience and, by so doing, (b) extract the cognitive mechanism that constitutes the building blocks bridging between the subjective experience and neuronal activity. Following this, we will be able to (c) identify the relevant neuronal activity for the phenomenon under examination. Results: Based on previous studies among posttraumatic survivors, we suggest that two cognitive mechanisms are especially relevant for the study of trauma: the sense of body ownership (i.e., the sense that this is our own body) and the sense of agency (the sense that we control our body. The trade-off between these closely related, yet independent mechanisms is highly significant. We conclude the article with the presentation of a detailed working plan for the study of trauma - one that begins with the subject and returns to the subject. Implications: This article summarizes our struggle to conduct a phenomenological research in the study of trauma and our methodological efforts of the last ten years. It should help the beginner to avoid some mistakes that have been made in this long journey, yet obviously, each one must build their own route. Likewise, we suggest that phenomenologists, brain scientists and clinicians should find a way to cooperate. This shared effort might allow us to improve our understanding of the traumatic experience and its long-term implications; as such, we believe that in this process a better treatment could be developed. That being said, the limitation of our proposal is the difficulty of creating a shared language that bridges these different worlds. Constructivist content: We strongly embraces phenomenological approach together with enactivist/embodied theories.

Key words: Trauma, PTSD, treatment, neurophenomenology, subjective experience, introspection cognitive bridges, brain activity

The concept of the brain as a prediction machine has enjoyed a resurgence in the context of the Bayesian brain and predictive coding approaches within cognitive science. To date, this perspective has been applied primarily to exteroceptive perception (e.g., vision, audition), and action. Here, I describe a predictive, inferential perspective on interoception: ‘interoceptive inference’ conceives of subjective feeling states (emotions) as arising from actively-inferred generative (predictive) models of the causes of interoceptive afferents. The model generalizes ‘appraisal’ theories that view emotions as emerging from cognitive evaluations of physiological changes, and it sheds new light on the neurocognitive mechanisms that underlie the experience of body ownership and conscious selfhood in health and in neuropsychiatric illness.

Key words: interoception, predictive coding, emotion, experience of body ownership, rubber hand illusion, active inference

Despite the fact that the rubber hand illusion (RHI) is an experimental paradigm that has been widely used in the last 14 years to investigate different aspects of the sense of bodily self, very few studies have sought to investigate the subjective nature of the experience that the RHI evokes. The present study investigates the phenomenology of the RHI through a specific elicitation method. More particularly, this study aims at assessing whether the conditions usually used as control in the RHI have an impact in the sense of body ownership and at determining whether there are different stages in the emergence of the illusion. The results indicate that far from being “all or nothing,” the illusion induced by the RHI protocol involves nuances in the type of perceptual changes that it creates. These perceptual changes affect not only the participants” perception of the rubber hand but also the perception of their real hand. In addition, perceptual effects may vary greatly between participants and, importantly, they evolve over time.