Patients suffering from depersonalization complain of feeling detached from their body, their mental states, and actions or even from themselves. In this chapter, I argue that depersonalization consists in the lack of a phenomenal feature that marks my experiences as mine, which is usually called “mineness,” and that the study of depersonalization constitutes a neglected yet incomparable probe to assess empirically the scope, role, and even the nature of mineness. Here is how I will proceed. After describing depersonalization (§2) and (...) arguing that it involves a lack of mineness (§3) I will confront a series of objections (§4). I will then spell out what depersonalization can teach us about the scope of mineness (§5), about its role and psychological function (§6) and even about its nature (§7). (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)

Descartes was certain that he was thinking and he was accordingly certain that he existed. Like Descartes, we seem to be more certain of our thoughts and our existence than of anything else. What is less clear is the reason why we are thus certain. Philosophers throughout history have provided different interpretations of the cogito, disagreeing both on the kind of thoughts it characterizes and on the reasons for its cogency. According to what we may call the empiricist interpretation of (...) the cogito, I can only claim to be certain of having experiences, and this certainty, as well as that of my own existence, stems from their phenomenal and subjective character. According to rationalist interpretations, on the other hand, I am certain of having some self-reflexive propositional attitudes, and this certainty derives from their rational features. Psychiatric patients suffering from acute forms of depersonalization or of the Cotard syndrome often doubt that they think and exist, and might even believe that they don't. I argue that their study allows us to favor the empiricist interpretation of the cogito. (shrink)

Various forms of anomalous self-experience can be seen as central to schizophrenia and other psychiatric disorders. We examined similarities and differences between anomalous self-experiences common in schizophrenia-spectrum disorders, as listed in the EASE , and those described in published accounts of severe depersonalization. Our aims were to consider anomalous self-experience in schizophrenia in a comparative context, to refine and enlarge upon existing descriptions of experiential disturbances in depersonalization, and to explore hypotheses concerning a possible core process in schizophrenia . Numerous (...) affinities between depersonalization and schizophrenia-spectrum experience were found: these demonstrate that rather pure forms of diminished self-affection can involve many experiences that resemble those of schizophrenia. Important discrepancies also emerged, suggesting that more automatic or deficiency-like factors—probably involving self/world or self/other confusion and erosion of first-person perspective—are more distinctive of schizophrenia-spectrum disorders. (shrink)

Many philosophers regard the persistence of philosophical disputes as symptomatic of overly ambitious, ill-founded intellectual projects. There are indeed strong reasons to believe that persistent disputes in philosophy (and more generally in the discourse at large) are pointless. We call this the pessimistic view of the nature of philosophical disputes. In order to respond to the pessimistic view, we articulate the supporting reasons and provide a precise formulation in terms of the idea that the best explanation of persistent disputes entails (...) that they are pointless. We then show how to answer the pessimistic argument. Taking a well-known mathematical controversy as our paradigm example, we argue that some persistent disputes reflect substantive disagreements at the “meta-analytic” level, i.e., disagreements about the best way, among quite different candidates, to understand the topic at issue, and the best associated cluster of analytic truths one should accept concerning it. Moreover, our concrete example shows that such meta-analytic disagreements can in principle be settled and yield a genuine theoretical (as opposed to merely pragmatic) breakthrough. We conclude optimistically that persistent disputes can be an important means of fostering epistemic progress. (shrink)

Depersonalization/derealization disorder is classified as a dissociative disorder in the DSM5. It is noteworthy that the symptoms of depersonalization and derealization are commonly found in many other psychological disorders, including schizophrenia spectrum disorders, while phenomenological features of schizophrenia are commonly found in DPDR. The current study attempts to clarify these apparent similarities via highly detailed phenomenological interviews with four persons diagnosed with DPDR. The data revealed four interrelated facets: 1, Loss of resonance, 2, Detachment from experience, 3, Loss of self, (...) and 4, Commitment to reality. These facets point to a felt loss of immediate and familiar engagement in experience as a basic organizing Gestalt which permeates the various symptoms and signs of our participants with DPDR. Close consideration of this disruption allows their experiences to be more easily distinguished from those of schizophrenia-spectrum disorders. (shrink)

If I see, hear, or touch a sparrow, the sparrow seems real to me. Unlike Bigfoot or Santa Claus, it seems to exist; I will therefore judge that it does indeed exist. The “sense of existence” refers to the kind of awareness that typically grounds such ordinary judgments of existence or “reality.” The sense of existence has been invoked by Humeans, Kantians, Ideologists, and the phenomenological tradition to make substantial philosophical claims. However, it is extremely controversial; its very existence has (...) been called into question. This paper aims to clarify the nature and reality of the sense of existence by studying a psychiatric condition in which the sense appears to be disrupted: depersonalization disorder (DPD). (shrink)

In a late manuscript, Husserl explicitly addresses the problem of depersonalization. Depersonalization is described as a rupture in a certain layer of experience, which, however, does not touch the fundamental unity of the underlying genesis. After a brief recapitulation of historical approaches to depersonalization, I’ll come to comment on this passage. To assess Husserl’s contribution to the clinical understanding, and more specifically to the phenomenology of depersonalization, it is essential to understand his concept of personhood. In Husserl’s account of personhood, (...) we can identify a tension between the unity and continuity of the transcendental genesis of the personal ego and the self-alienation and de-presentation at play in this genesis. Drawing on the French reception of Husserl’s phenomenology and Eugen Fink’s notion of de-presentation, I suggest that transcendental temporalization not only cannot function as a fail-safe in the case of depersonalization but may even be at the core of the loss of the sense of personhood. To account for the fact of personalization, one must re-evaluate the notion of empathy in the relation of the self to itself. (shrink)

Internal sensations, especially organic ones, are not only the foundation of our consciousness of life and self but also an integral part of each feeling. This is probably the origin of the genuine affinity between feelings and consciousness of life and self, an affinity that manifests itself even in speech. Indeed, the expression “sense of self” is more natural than saying “representing” or even “imagining one’s self”. It is also easier and neater to talk in French about “sentiment du moi” (...) than “representation du moi”; the expression “das Ichgefühl” is less grating than “die Ichvorstellung”, the latter being rather used to mean the conceived self as opposed to the self of which one is conscious all the time. The self is not a feeling, however, if only because there are no feelings that would be equally constant or, to be more precise, that would recur with equal constancy. Even so, we can say it is closer to emotive states than to any representation or mental image. […]. (shrink)