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Ordered and self-disordered dynamics of holes and defects in the one-dimensional complex Ginzburg-Landau equation.

We study the dynamics of holes and defects in the 1D complex Ginzburg-Landau equation in ordered and chaotic cases. Ordered hole-defect dynamics occurs when an unstable hole invades a plane wave state and periodically nucleates defects from which new holes are born. The results of a detailed numerical study of these periodic states are incorporated into a simple analytic description of isolated "edge" holes. Extending this description, we obtain a minimal model for general hole-defect dynamics. We show that interactions between the holes and a self-disordered background are essential for the occurrence of spatiotemporal chaos in hole-defect states.

Journal Article↗

[Not Available].

OBJECTIVE: The present study examines the question of whether concomitant narcissistic self-disorders indicate a poorer prognosis in patients with anorexia nervosa (AN) and bulimia nervosa (BN). METHOD: Ninety-one female inpatients who met the DSMIV criteria fo AN or BN were investigated during inpatient treatment by using: a semistructured diagnostic interview, the Eating Disorder Inventory (EDI), the Narcissism Inventory (NI), the Hamburg Obsession-Compulsion Inventory, and the Inventory of Interpersonal Problems (IIP). The patients were divided into two groups: those with and those without narcissistic self-disorders as measured by the NI. Seventy-five patients were assessed at follow-up thirty months after discharge. RESULTS: Fifty-one percent of the follow-up group no longer fulfilled the DSM-IV criteria for AN or BN, and there was no significant correlation with the earlier presence of concomitant narcissistic self-disorders. At follow-up, patients with narcissistic self-disorders had significantly more pathological mean scores than patients without such disorders on four of the eight EDI scales and on four of the eight IIP scales. ANOVA for repeated measures revealed significant improvement over time on seven of the eight EDI scales in both groups. However, significant group-by-time interactions demonstrated that patients with narcissistic self-disorders had improved more over time than patients without selfdisturbances. Furthermore, the obsessive-compulsive Symptoms of those patients with narcissistic self-disorders who no longer fulfilled DSM-IV criteria for AN or BN had significantly decreased. CONCLUSION: Our findings indicate that the improvement of eating disorder Symptoms corresponds to a decrease in obsessive-compulsive Symptoms. In addition, there is a certain degree of independence between the severity of narcissistic self-disorders and the outcome of AN or BN. The results suggest that concomitant narcissistic self-disorders do not indicate a significantly poorer prognosis in patients with AN and BN.

Anorexia nervosa↗

Hole-defect chaos in the one-dimensional complex Ginzburg-Landau equation.

We study the spatiotemporally chaotic dynamics of holes and defects in the one-dimensional (1D) complex Ginzburg-Landau equation (CGLE). We focus particularly on the self-disordering dynamics of holes and on the variation in defect profiles. By enforcing identical defect profiles and/or smooth plane wave backgrounds, we are able to sensitively probe the causes of the spatiotemporal chaos. We show that the coupling of the holes to a self-disordered background is the dominant mechanism. We analyze a lattice model for the 1D CGLE, incorporating this self-disordering. Despite its simplicity, we show that the model retains the essential spatiotemporally chaotic behavior of the full CGLE.

Journal Article↗

[Disorders of the self according to self-psychological theory: a case presentation].

OBJECTIVE: In this case report the classification of self-disorders and syndromes of self-pathology are reviewed. The self-structure of a male patient (Mr. R), who has a narcissistic personality, is defined, and the dynamics of the transference and countertransference in the psychotherapy process are discussed. According to self-psychology, the cluster of the self-disorder is divided into five subgroups: psychoses, borderline states, schizoid and paranoid personalities, narcissistic behavioural disorders, and narcissistic personality disorders. The syndromes of self-pathology, which arise as a consequence of a lack of empathy on the part of the self-objects in childhood, are classified into four groups: understimulated self, fragmenting self, overstimulated self and overburdened self. Mr. R is in his thirties, a single man who works in a bank and lives with his family. Because of Mr. R's definition of himself as lifeless and boring, his complaints about his feelings of emptiness, his fear of losing his cohesiveness and some hypochondriacal worries concerning his health, it can be thought that Mr. R has both an understimulated and a fragmenting self. In the first six months of his psychotherapy process, an idealizing transference was prominent. Mr. R perceived his therapist as a powerful and talented person and even a saviour. In the countertransference, "a saviour father imago" was enacted. It seems that Mr. R's childhood memories, which were related to his mother and father, are repeated in the transference-countertransference relationship.

Adult↗

Phenomenology of anomalous self-experience in early schizophrenia.

Disorders of self-experience were emphasized in classic literature and in phenomenological psychiatry as essential clinical features of the schizophrenia spectrum disorders, but are neglected in the contemporary psychopathology due to epistemologically motivated distrust of studying anomalies of subjectivity. Based on our own and other empirical studies, we present here detailed clinical phenomenological descriptions of nonpsychotic anomalies of self-experience that may be observable in the prodromal phases of schizophrenia and in the schizotypal disorders. Anomalies of self-experience are grouped according the experiential domain that appears to be affected and are illustrated by short vignettes or verbatim quotes from the patients. It is suggested that disorders of the self deserve further systematic empirical investigations, also from an etiological perspective. Self-disorders may turn out to be potentially useful as a psychopathological organizer of the schizophrenia spectrum disorders. Psychopathological emphasis on these disorders may also help to integrate the search for the neurodevelopmental mechanisms in schizophrenia with developmental-psychological research on the ontogenesis of the self.

Adult↗

Anhedonia, self-experience in schizophrenia, and implications for treatment.

Anhedonia - the inability to experience pleasure - is a symptom of several psychiatric disorders such as depression, drug and alcohol dependence, but also schizophrenia. The concept of anhedonia played a major role in psychiatric and psychoanalytic explanations of psychotic behavior. The relationship between notions of anhedonia and of mental evolution and regression (in the work of Myerson and Bleuler) is discussed. The non-evolutionist views of Rado and Meehl are described. Then the concept of anhedonia is discussed in relationship to the phenomenological approach of Sass and Parnas, who view anhedonia as one manifestation of a self-disturbance or self-disorder that is fundamental in schizophrenia. Concerning treatment of anhedonia, it was often hypothesized that anhedonia is associated with a dysfunction of the mesolimbic dopaminergic reward system. However, studies in humans and non-human animal models indicate that dysfunction of central dopaminergic neurotransmission interferes with the process of motivation rather than with the ability to experience pleasure; the latter may be more mediated by the opioidergic and serotonergic neurotransmission. Understanding the neurobiological correlates of motivation and pleasure may provide new options to treat anhedonia in patients with schizophrenia.

Animals↗

Schizophrenia, consciousness, and the self.

In recent years, there has been much focus on the apparent heterogeneity of schizophrenic symptoms. By contrast, this article proposes a unifying account emphasizing basic abnormalities of consciousness that underlie and also antecede a disparate assortment of signs and symptoms. Schizophrenia, we argue, is fundamentally a self-disorder or ipseity disturbance (ipse is Latin for "self" or "itself") that is characterized by complementary distortions of the act of awareness: hyperreflexivity and diminished self-affection. Hyperreflexivity refers to forms of exaggerated self-consciousness in which aspects of oneself are experienced as akin to external objects. Diminished self-affection or self-presence refers to a weakened sense of existing as a vital and self-coinciding source of awareness and action. This article integrates recent psychiatric research and European phenomenological psychiatry with some current work in cognitive science and phenomenological philosophy. After introducing the phenomenological approach along with a theoretical account of normal consciousness and self-awareness, we turn to a variety of schizophrenic syndromes. We examine positive, then negative, and finally disorganization symptoms-attempting in each case to illuminate shared distortions of consciousness and the sense of self. We conclude by discussing the possible relevance of this approach for identifying early schizophrenic symptoms.

Affect↗