Reassessing "Praecox Feeling" in Diagnostic Decision Making in Schizophrenia: A Critical Review.

The "Praecox Feeling" (PF) is a classical concept referring to a characteristic feeling of bizarreness experienced by a psychiatrist while encountering a person with schizophrenia. Although the PF used to be considered a core symptom of the schizophrenia spectrum, it fell into disuse since the spread of operationalized diagnostic methods (Diagnostic and Statistical Manual of Mental Disorders/International Classification of Diseases systems). In contemporary research on schizophrenia, it remains largely unaddressed.

Multiple Realities and Hybrid Objects: A Creative Approach of Schizophrenic Delusion.

Delusion is usually considered in DSM 5 as a false belief based on incorrect inference about external reality, but the issue of delusion raises crucial concerns, especially that of a possible (or absent) continuity between delusional and normal experiences, and the understanding of delusional experience. In the present study, we first aim to consider delusion from a perspectivist angle, according to the Multiple Reality Theory (MRT). In this model inherited from Alfred Schütz and recently addressed by Gallagher, we are not confronting one reality only, but several (such as the reality of everyday life, of imaginary life, of work, of delusion, etc.

New Insight into Affectivity in Schizophrenia: from the Phenomenology of Marc Richir.

Background: According to Karl Jaspers, psychopathology requires a comprehensive method, understood as a systematic exploration of the first-person perspective of the patient's experience. At the same time, however, schizophrenia for Jaspers is characterized by its radical incomprehensibility. In addition, Rümke's so-called "praecox feeling" paradoxically combines the incomprehensibility of schizophrenic experience and the evidence of its pathological manifestation in the encounter.

How to: Measuring blood cytokines in biological psychiatry using commercially available multiplex immunoassays.

Cytokines produced by both immune and non-immune cells are likely to play roles in the development and/or progression of psychiatric disorders. Indeed, many investigators have compared the blood cytokine levels in psychiatric patients with those of healthy controls or monitored their levels in patients during disease progression to identify biomarkers. Nevertheless, very few studies have confirmed that such cytokines remain stable in healthy individuals through periods of weeks and months.

Longitudinal monitoring of the serotonin transporter gene expression to assess major depressive episode evolution.

Background: Mood disorders are frequently characterized by uncertain prognosis and studying mRNA expression variations in blood cells represents a promising avenue of identifying biomarkers for mood disorders. State-dependent gene expression variations have been described during a major depressive episode (MDE), in particular for SLC6A4 mRNA, but how this transcript varies in relation to MDE evolution remains unclear. In this study, we prospectively assessed time trends of SCL6A4 mRNA expression in responder and nonresponder patients.

Natural speech comprehension in bipolar disorders: an event-related brain potential study among manic patients.

Background: Thought and language disturbances are crucial clinical features in Bipolar Disorders (BD), and constitute a fundamental basis for social cognition. In BD, clinical manifestations such as disorganization and formal thought disorders may play a role in communication disturbances. However, only few studies have explored language disturbances in BD at a neurophysiological level.

Toward an exploration of feeling of strangeness in schizophrenia: perspectives on acousmatic and everyday listening.

The aim of this study was to investigate abnormal perceptual experiences in schizophrenia, in particular the feeling of strangeness, which is commonly found in patients' self-reports. The experimental design included auditory complex stimuli within 2 theoretical frameworks based on "sensory gating deficit" and "aberrant salience," inspired from conventional perceptual scales. A specific sound corpus was designed with environmental (meaningful) and abstract (meaningless) sounds.

Clinical variations modulate patterns of gene expression and define blood biomarkers in major depression.

The aim of the study is to compare the expression level of candidate genes between patients suffering from a severe major depressive episode (MDE) and controls, and also among patients during MDE evolution. After a comprehensive review of the biological data related to mood disorders, we initiated a hypothesis-driven exploration of candidate mRNAs. Using RT-qPCR, we analyzed peripheral blood mononuclear cells (PBMCs) mRNA obtained from a homogeneous population of 11 patients who suffered from severe melancholic MDE.

The "minimal self" in psychopathology: re-examining the self-disorders in the schizophrenia spectrum.

The notion of minimal, basic, pre-reflective or core self is currently debated in the philosophy of mind, cognitive sciences and developmental psychology. However, it is not clear which experiential features such a self is believed to possess. Studying the schizophrenic experience may help exploring the following aspects of the minimal self: the notion of perspective and first person perspective, the 'mineness' of the phenomenal field, the questions of transparency, embodiment of point of view, and the issues of agency and ownership, considered as different and less fundamental than the feeling of mineness.

Rebuilding reality: a phenomenology of aspects of chronic schizophrenia.

Schizophrenia, like other "pathological" conditions, has not been systematically included in the general study of consciousness. By focusing on aspects of chronic schizophrenia, we attempt to survey one way of remedying this omission. Some basic components of Edmund Husserl's phenomenology of human experience (intentionality, constitution, and unbuilding) are explicated in detail, and these components are then employed in an account of exemplary aspects of chronic schizophrenia.

Schizophrenia: two-faced meaning of vulnerability.

The authors stress the current two-faced meaning of vulnerability that conveys both an objective and a subjective direction of sense, leading to a naturalistic model as well as a humanistic one. These models are heirs of both the Kraepelinian and Bleulerian conceptions of schizophrenia. Coping strategies and resilience are core concepts of the humanistic model.