Kafka's writings are frequently interpreted as representing the historical period of modernism in which he was writing. Little attention has been paid, however, to the possibility that his writings may reflect neural mechanisms in the processing of self during hypnagogic (i.e., between waking and sleep) states. Kafka suffered from dream-like, hypnagogic hallucinations during a sleep-deprived state while writing. This paper discusses reasons (phenomenological and neurobiological) why the self projects an imaginary double (autoscopy) in its spontaneous hallucinations and how Kafka's writings (...) help to elucidate the underlying cognitive and neural mechanisms. I further discuss how the proposed mechanisms may be relevant to understanding paranoid delusions in schizophrenia. Literature documents and records cognitive and neural processes of self with an intimacy that may be otherwise unavailable to neuroscience. To elucidate this approach, I contrast it with the apparently popularizing view that the symptoms of schizophrenia result from what has been called an operative (i.e., pre-reflective) hyper-reflexivity. The latter approach claims that pre-reflective self-awareness (diminished in schizophrenia) pervades all conscious experience (however, in a manner that remains unverifiable for both phenomenological and experimental methods). This contribution argues the opposite: the. (shrink)

In their target article, McKay & Dennett (M&D) conclude that only “positive illusions” are adaptive misbeliefs. Relying on overly strict conceptual schisms (deficit vs. motivational, functional vs. organic, perception vs. belief), they prematurely discount delusions asbiologicallyadaptive. In contrast to their view that “motivation” plays a psychological but not a biological function in a two-factor model of the forming and maintenance of delusions, we propose asingleimpairment in prediction-error–driven (i.e., motivational) learning in three stages in which delusions play a biologically adaptive role.

The work of Hussefl and Freud had common sources in the philosophy, psychology and physiology of the nineteenth century. Herbart, Brentano, Helmholtz, Fechner, Wundt and Mach were among the towering figures in their common background who had influence on their respective work. 1 Although contemporaries who had little concern for the other's professional interest, Husserl and Freud nevertheless struggled with some common problems. One of these is the relationship of sensation to memory and to the experience of time. The concepts (...) of sensation, memory and time were, in fact, artifacts which the empirical methods of nerve-physiology, the psychophysical testing of sensory thresholds, as well as the metaphysics and positivism of the late nineteenth century had left them. (shrink)

Artificial stimulation of the peripheral vestibular system has been shown to improve ownership of body parts in neurological patients, suggesting vestibular contributions to bodily self-consciousness. Here, we investigated whether galvanic vestibular stimulation interferes with the mechanisms underlying ownership, touch, and the localization of one’s own hand in healthy participants by using the “rubber hand illusion” paradigm. Our results show that left anodal GVS increases illusory ownership of the fake hand and illusory location of touch. We propose that these changes are (...) due to vestibular interference with spatial and/or temporal mechanisms of visual-tactile integration leading to an enhancement of visual capture. As only left anodal GVS lead to such changes, and based on neurological data on body part ownership, we suggest that this vestibular interference is mediated by the right temporo-parietal junction and the posterior insula. (shrink)

After briefly reviewing some of the empirical and philosophical literature suggesting that there may be an adaptive role for delusion formation, we discuss the results of a recent study consisting of in-depth interviews with people experiencing delusions. We analyse three such cases in terms of the circumstances preceding the development of the delusion; the effects of the development of the delusion on the person’s situation; and the potential protective nature of the delusional belief as seen from the first-person perspective. We (...) argue that the development of the delusional belief can play a short-term protective function and we reflect on the implications that this might have for our understanding of psychotic symptoms, for the stigma associated with mental health issues, and for treatment options. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:ADOLESCENCE, INDIFFERENTIATION, AND THE ONSET OF PSYCHOSIS Henri Grivois Hôtel-Dieu, Paris The onset of psychosis happens, by definition, only once. The first psychotic episode is unforeseeable and risks being overlooked. Left to itself its future is uncertain, and the prognosis is potentially unfavorable. The variety of its manifestations as well as its thymic and cognitive instability explains why so little is written on this subject. The psychiatric literature, by (...) its almost exclusive reference to evolved psychoses, has not distinguished the qualities peculiar to the onset of psychosis (nascent psychosis). Yet recent research reflects an interest in early diagnosis of psychosis to secure qualitative improvements and the chance ofa favorable outcome for patients. A special approach must be used for patients during the stage of nascent psychosis. Something must be done, but early treatment is not enough. Psychotropic medication has no more than a sedative effect and there are few specifics at this stage (Swain 175). Further, one risks obliterating the patient's lived experience. The entire battery of interventions, above all the first consultations, must follow from a rigorously organized and intensive strategy to directly engage with this subjective experience. For many years at l'Hôtel-Dieu, a general hospital situated in the center of Paris, we have harnessed ourselves to this task. First I shall describe the existence of centrality. It constitutes the most characteristic and permanent trait of the onset of psychosis. From the concept of concernment, I propose a phenomenological morphogenesis of the initial sequence of psychosis. Next I turn to the state of indifferentiation that overcomes the subject, and then to the vulnerability peculiar to adolescents. I shall end with some fundamental epidemiological data. Henri Grivois1 05 Centrality To be mad is not only the feeling of being uniquely in contact with all humanity, whether as alienated from it or as uniting all of it in oneself conceived as the only member of the species. It is this certainly but also more than this. It is to infer that one occupies a unique place in the human world. It is the feeling of being encircled by everyone. Without being responsible, the patient is placed in the forefront of some grandiose project. His centrality, whatever the mode ofexpression, orients him towards a form of mental disorder. As a general rule, at the beginning, centrality is never explicit and passes unnoticed. The physical and verbal behavior of the patient suffice to accuse him, without any further investigation, of unintelligibility and incoherence. Centrality is above all an emotion about which we should admit that we know almost nothing. People with nascent psychosis are the prey of intuitions impossible to comprehend. Like Rimbaud's drunken boat, they flee, drifting or hiding themselves, coming back and taking offagain. They are therefore incapable, wherever they go, of living an instant of unconcern. Incapable of expressing their singular rapport with the world, they keep silent. Very soon nevertheless centrality engenders a torrent of questions. Silently, voicelessly, patients apprehend in an almost automatic manner the responses to these questions in the verbal and gestural behavior of others. Since Esquirol (Gauchet and Swain 464) identified hallucinatory phenomena as the cause of psychosis, they have occupied a disproportionate place in mental science for 200 years. This construction of the concept of hallucination in psychiatry, key to the orthodox vision of psychosis, assures a watchful vigilance to rule out every non-symptomatic treatment ofpatients. Hours or perhaps days later, no longer capable of abstaining from interpretation, patients begin to sketch out an explanation ofthe prodigious situation which they have experienced. They interrogate their relation to others and the intentions and the degree of unanimity of people towards them. Invoking demons and monsters often gives their explanations a first coherence which is in harmony with the scale of their experience. On their side the psychiatrists, to facilitate verbalizing the experience, suggest paraphrases of a general order: influence, mental automatism, exterior action, xenopathia, etc. To mask centrality, to get away from it, or in response to the gravity of the event, the patients, in search of some responsibility, envisage more elaborate scenarios: mission, conspiracy, trial, condemnation. A political vocabulary, more plausible but less universal than a... (shrink)

Decades ago, several authors have proposed that disorders in automatic processing lead to intrusive symptoms or abnormal contents in the consciousness of people with schizophrenia. However, since then, studies have mainly highlighted difficulties in patients’ conscious experiencing and processing but rarely explored how unconscious and conscious mechanisms may interact in producing this experience. We report three lines of research, focusing on the processing of spatial frequencies, unpleasant information, and time-event structure that suggest that impairments occur at both the unconscious and (...) conscious level.We argue that focusing on unconscious, physiological and automatic processing of information in patients, while contrasting that processing with conscious processing, is a first required step before understanding how distortions or other impairments emerge at the conscious level. We then indicate that the phenomenological tradition of psychiatry supports a similar claim and provides a theoretical framework helping to understand the relationship between the impairments and clinical symptoms. We base our argument on the presence of disorders in the minimal self in patients with schizophrenia. The minimal self is tacit and non-verbal and refers to the sense of bodily presence. We argue this sense is shaped by unconscious processes, whose alteration may thus affect the feeling of being a unique individual. This justifies a focus on unconscious mechanisms and a distinction from those associated with consciousness. (shrink)

We distinguish between three philosophical views on the neuroscience of predictive models: predictive coding, predictive processing and predictive engagement. We examine the concept of active inference under each model and then ask how this concept informs discussions of social cognition. In this context we consider Frith and Friston’s proposal for a neural hermeneutics, and we explore the alternative model of enactivist hermeneutics.

Auditory hallucinations are common symptomatic manifestations of psychotic states, particularly within the schizophrenia spectrum. For example, Kraepelin already catalogued an extensive array of related phenomena including auditory verbal hallucinations as relevant features of Dementia Praecox. Such phenomena entail a rich and complex architecture that -- according to Jaspers -- is irreducibly linked to an impression of immediacy and quasi-perceptual features. However, both operational psychiatric epistemology and contemporary neuroscientific research tend to interpret the Jaspersian description in a literal and rather concrete (...) way, de facto reducing hallucinatory experiences to mere disordered perceptions. Such percepto-centric conceptualization, besides being theoretically problematic, is also at odds with the experiential features described by schizophrenia spectrum subjects. According to phenomenological psychopathology indeed, AVH are manifestations of a profound, gestaltic transformation of the stream of consciousness that precedes the emergence of florid symptoms. (shrink)

The impression of time continuity is a pervasive and given property of our subjective life. However, it appears to be compromised in patients with schizophrenia who experience what has been labelled 'self-disturbances'. We propose that the gaps in the continuity of self-experience in schizophrenia reflect disruption of non-conscious levels of temporal processing and indicate how this view is supported by experimental, phenomenological, and predictive coding approaches. Both experimental data and the phenomenology of time support the same surprising findings, i.e. the (...) unconscious, automatic processing of time is more accurate than conscious processing. These observations are also concordant with hierarchical predictive coding accounts of brain function, i.e. processing is more local or granular, with briefer timescales lower in the hierarchy. Automatic, or 'passive' integration of information over time at a high temporal resolution would ensure any gap arising when coding events consciously, i.e. at a larger timescale, are smoothed over. We suggest this to involve both retentional and protentional mechanisms. (shrink)