Depersonalization and derealization refer to states of dissociation in which one feels a sense of alienation in relation to one’s self and environment, respectively. Whilst transient episodes often diminish without treatment, chronic experiences of DP and DR may last for years, with common treatments lacking a strong evidence base for their efficacy. We propose a theoretical explanation of DP and DR based on interoceptive predictive coding, and discuss how transient experiences of DP and DR may be induced in the non-clinical (...) population using virtual reality. Further, we review the use of heartbeat evoked potentials in detecting the neural correlates of DP and DR allowing for an objective measure of these experiences in the non-clinical population. Finally, we discuss how the induction and detection of transient experiences of DP and DR in the non-clinical population could shed light on how the brain constructs one’s sense of self and reality. (shrink)

Patient RB has a peculiar memory impairment wherein he experiences his memories in rich contextual detail, but claims to not own them. His memories do not feel as if they happened to him. In this paper, I provide an explanatory model of RB’s phenomenology, the self-attentional model. I draw upon recent work in neuroscience on self-attentional processing and global workspace models of conscious recollection to show that RB has a self-attentional deficit that inhibits self-bias processes in broadcasting the contents of (...) episodic memories to the global workspace. Typically, self-related contents enjoy a higher salience level than other-related contents. Elimination of bias toward self-related contents diminishes the salience of those contents to the level of other-related contents. Because the typical high salience of self-related content is necessary for the feeling of ownership, RB lacks the feeling of ownership. I also discuss potential applications of the self-attentional model to other psychopathological cases. (shrink)

Depersonalization/Derealization Disorder (DPD) is a psychopathological condition in which subjects suffer from a massive alienation from themselves and the world around them. In recent years, several philosophers have proposed accounts that explain DPD in terms of an alteration in global features of normal consciousness, such as ‘mineness’. This article criticizes such accounts and develops an alternative approach, based on the observation that many mental states relate to the subject because of the kind of state they belong to. I argue that (...) most symptoms of DPD can be understood as impairments in such forms of self-relation. (shrink)

This paper proposes a qualitative study exploring anomalous self and world-experiences in individuals with high levels of depersonalization experiences. Depersonalization (DP) is a condition characterized by distressing feelings of being a detached, neutral and disembodied onlooker of one’s mental and bodily processes. Our findings indicate the presence of a wide range of anomalous experiences traditionally understood to be core features of DP, such as disembodiment and disrupted self-awareness. However, our results also indicate experiential features that are less highlighted in previous (...) work, such as faster time perception and blurriness of the self/other boundaries which may play a key role in altering one’s sense of self and sense of presence in the world. Our qualitative study provides an in-depth examination of self-reported disturbances of one’s relatedness to one’s self and the world, thereby shedding further light on the nature of altered subjective experiences in DP. In doing so, this paper draws attention to key aspects yet overlooked that may prove valuable for shedding further light into the phenomenon of depersonalization. We conclude by highlighting limitations of this study and a number of open questions that further work needs to address in the future. (shrink)

In his paper “Whatever next? Predictive brains, situated agents, and the future of cognitive science,” Andy Clark seminally proposed that the brain's job is to predict whatever information is coming “next” on the basis of prior inputs and experiences. Perception fundamentally subserves survival and self-preservation in biological agents, such as humans. Survival however crucially depends on rapid and accurate information processing of what is happening in the here and now. Hence, the term “next” in Clark's seminal formulation must include not (...) only the temporal dimension (i.e., what is perceivednow) but also the spatial dimension (i.e., what is perceivedhereor next-to-my-body). In this paper, we propose to focus on perceptual experiences that happen “next,” i.e., close-to-my-body. This is because perceptual processing of proximal sensory inputs has a key impact on the organism's survival. Specifically, we focus on tactile experiences mediated by the skin and what we will call the “extended skin” or “second skin,” that is, immediate objects/materials that envelop closely to our skin, namely, clothes. We propose that the skin and tactile experiences are not a mere border separating the self and world. Rather, they simultaneously and inherently distinguishandconnect the bodily self to its environment. Hence, these proximal and pervasive tactile experiences can be viewed as a “transparent bridge” intrinsically relating and facilitating exchanges between the self and the physical and social world. We conclude with potential implications of this observation for the case of Depersonalization Disorder, a condition that makes people feel estranged and detached from their self, body, and the world. (shrink)

There has recently been a resurgence of philosophical and scientific interest in the foundations of self-consciousness, with particular focus on its altered, anomalous forms. This paper looks at the altered forms of self-awareness in Depersonalization Disorder (DPD), a condition in which people feel detached from their self, their body and the world (Derealisation). Building upon the phenomenological distinction between reflective and pre-reflective self-consciousness, we argue that DPD may alter thetransparencyof basic embodied forms of pre-reflective self-consciousness, as well as the capacity (...) to flexibly modulate and switch between the reflective and pre-reflective facets of self-awareness. Empirical evidence will be invoked in support of the idea that impaired processing of bodily signals is characteristic of the condition. We provide first-hand subjective reports describing the experience of self-detachment or fracture between an observing and an observed self. This split is compared with similar self-detachment phenomena reported in certain Buddhist-derived meditative practices. We suggest that these alterations and changes may reveal the underlying and tacit transparency that characterises the embodied and basic pre-reflective forms of self-consciousness, in the same way that a crack in a transparent glass may indicate the presence of an unnoticed window. (shrink)

A recent strand in the philosophical literature on addiction emphasizes problems with diachronic self-control. Hanna Pickard, for example, argues that an important aspect of addiction consists in inability to identify with a non-addicted future self. This literature sits alongside another that treats addiction as the product of neural changes that “hijack” mechanisms of reward prediction, habit formation decision making and cognitive control. This hijacking literature originates in accounts that treat the neural changes characteristic of addiction as a brain disease. This (...) paper provides a framework based on predictive processing accounts of self-awareness that integrates the hijacking and diachronic accounts. I discuss a hijacking account proposed to explain disruption of addiction following lesion to the anterior insula cortex. I show how insula activity contributes to the type of identification implicated in diachronic accounts and how deactivation of the anterior insula can disrupt addiction by alienating the subject from her addictive tendencies. This is consistent with neural evidence but also incorporates the personal level features of addiction that are opaque to neural level explanation. (shrink)