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Different types of "dissociation" have different psychological mechanisms.

The term "dissociation" has been used to describe a wide range of psychological and psychiatric phenomena. The popular conception of dissociation describes it as a unitary phenomenon, with only quantitative differences in severity between the various dissociative conditions. More recently, it has been argued that the available evidence is more consistent with a model that identifies at least two distinct categories of dissociative phenomena-"detachment" and "compartmentalization"- that have different definitions, mechanisms and treatment implications (Holmes, Brown, Mansell, Fearon, Hunter, Frasquilho & Oakley 2005). This paper presents evidence for this bipartite model of dissociation, followed by definitions and descriptions of detachment and compartmentalization. Possible psychological mechanisms underlying these phenomena are then discussed, with particular emphasis on the nature of compartmentalization in conversion disorder, hypnosis, dissociative amnesia and dissociative identity disorder.

Amnesia↗

[On the relationship between traumatization, amnesia and symptom stress--an empirical pilot study].

OBJECTIVES: In the present study we examined facial affective behavior in acutely traumatized patients undergoing EMDR therapy. Furthermore, we analyzed whether a decrease in emotional numbing was due to a reduction of symptoms. Amnestic tendencies were used as a moderator variable. METHODS: The facial affective behaviour was coded using the Emotional Facial Acting Coding System, an instrument for the registration of facial movements with emotional relevance. The facial affective behavior of the patient's first and last EMDR session was compared. RESULTS: A significant increase in facial affective behavior as well as an increase in mental complaints were found. Furthermore, the reduction in amnestic tendencies did not result in a reduction of symptoms. CONCLUSIONS: Under the influence of the treatment it is possible to improve access to episodic affective memory. Nevertheless, a positive influence cannot be denoted at the end of the treatment.

Adult↗

The utility of dimensional and categorical approaches to understanding dissociation in the eating disorders.

OBJECTIVE: The present study compared levels of dissociation across groups of eating-disordered women, investigating the utility of dimensional and categorical measures of dissociation in understanding diagnoses and behaviours in the eating disorders. METHODS: The Dissociative Experiences Scale (DES-II) was completed by 170 eating-disordered women (drawn from out-patient assessment clinics) and 203 nonclinical women. The clinical group also supplied information regarding eating behaviours and related features (alcohol abuse, reported history of sexual abuse). The DES-II and a subset of its items (DES-Taxon) were used as dimensional and categorical discriminators of the groups and of the presence/absence of specific features and symptoms. RESULTS: When treated as dimensional measures, the DES-II and DES-Taxon had similar levels of clinical utility (particularly discriminating the binge-purge anorexics from the other clinical groups). However, the DES-Taxon was a superior categorical measure, discriminating groups more clearly and predicting the presence of many symptoms and features much more powerfully. CONCLUSIONS: The DES-Taxon is a potentially valuable self-report measure for indicating the level and presence of dissociative psychopathology in the eating disorders. As well as being convenient to administer and score, it has the clinical and research value of indicating those patients in whom treatment might need to include addressing pathological dissociation.

Depersonalization↗

On discriminating and not discriminating between affect and representation.

The topic involves two issues. They can be related either to different clinical pictures or to divergent opinions about the same clinical facts. But the above mentioned opposition can be found in Freud's work. Listening in analysis differentiates between situations where the distinction of affect and representation is blurred within the general frame of communication and others where this distinction imposes itself because of the critical or chronic character of the predominance of affect. Problems about the discrimination between affect and representation in the unconscious are elucidated in the light of their structural differences. The notion of the psychical representative of the drive announces the reference to the further notion of instinctual impulse. Later on, in Freud's theory, the notion of instinctual impulse has encompassed the distinction between affects and representation. Contemporary authors have, in their vast majority, chosen to refer preferably to object relationships. Nevertheless, the problems raised by Freud remain unanswered. It is with the clinical picture of borderline personality disorders that the lack of discrimination between affect and representation becomes evident. A detailed description is presented of the forms of transference where the irrepresentable prevails, accompanied by feelings of being overwhelmed, repetition compulsion, acting out and somatic reactions. In the countertransference, the affects of helplessness, despair and even the impossibility of grasping the meaning of the patient's communication are frequently met in the analyst. In these clinical pictures, intermediary formations, i.e. psychic organisations where primary processes structures the unconscious, are impaired. One is struck by the limitation of the capacities of representation and by the importance of phenomena related to negative hallucinations specially focused on thought processes, The communication is frequently self-contradictory, the transference oscillating between disembodiment and primitive fusion. The object has a paradoxical status; it is at the same time everything and nothing, the transference being incomprehensible and unanalysable. Different hypotheses are presented to explain the importance of destruction. Finally, the author presents a hypothesis for the deficiency of these intermediary formations because of the absence of continuing cathexis from the primary object at certain important moments of the relationship. It is the establishment of theses intermediary formations that will permit the acceptance of the separation from the object, the child now being able to rely on his own internal creations. However important the influences of the relationship to the other in the genesis of affects, the internal orientation towards the body of the psychic processes is what constitutes the core of the primordial psychic world.

Affect↗

Assaultive projective identification and the plundering of the victim's identity.

A destructive mode of projective identification is delineated: a predator's catastrophic attack calculated to cause the victim a stress disorder marked by a disarrayed identity. This discomposure enables the perpetrator to aggrandize a manifold inroad upon the victim's identity to imprint, intrude, mingle and/or lodge his representation into it; to ravage, steal from, impoverish, and/or corrupt it; finally to have his representation emerge as an internal regulator of the traumatized prey's functioning. The victim's debased integrity is manifest in the symptoms of his ensuing posttraumatic stress disorder (PTSD).

Crime Victims↗

Linking out-of-body experience and self processing to mental own-body imagery at the temporoparietal junction.

The spatial unity of self and body is challenged by various philosophical considerations and several phenomena, perhaps most notoriously the "out-of-body experience" (OBE) during which one's visual perspective and one's self are experienced to have departed from their habitual position within one's body. Although researchers started examining isolated aspects of the self, the neurocognitive processes of OBEs have not been investigated experimentally to further our understanding of the self. With the use of evoked potential mapping, we show the selective activation of the temporoparietal junction (TPJ) at 330-400 ms after stimulus onset when healthy volunteers imagined themselves in the position and visual perspective that generally are reported by people experiencing spontaneous OBEs. Interference with the TPJ by transcranial magnetic stimulation (TMS) at this time impaired mental transformation of one's own body in healthy volunteers relative to TMS over a control site. No such TMS effect was observed for imagined spatial transformations of external objects, suggesting the selective implication of the TPJ in mental imagery of one's own body. Finally, in an epileptic patient with OBEs originating from the TPJ, we show partial activation of the seizure focus during mental transformations of her body and visual perspective mimicking her OBE perceptions. These results suggest that the TPJ is a crucial structure for the conscious experience of the normal self, mediating spatial unity of self and body, and also suggest that impaired processing at the TPJ may lead to pathological selves such as OBEs.

Adult↗

[Emotional burn-out in official teachers, Medellin, Colombia, 2005].

OBJECTIVE: Exploring signs of emotional and physical weakness or Burnout syndrome in qualified teachers in Medellin, Colombia, 2005. METHODS: A cross-sectional study was applied to a random bi-stage sample of 239 teachers who filled in a questionnaire by themselves to explore demographic, work and social variables and dimensions of the Burnout syndrome, according to the Maslach Burnout Inventary (MBI). RESULTS: The findings showed that 23.4% of the sample presented signs of Burnout and a further 23.4% were at risk of suffering it; emotional weakness and depersonalisation were present in both subgroups. CONCLUSIONS: A relationship between Burnout signs and some of the variables studied was found. It is suggested that personal, family and social variables potentially associated with the syndrome should be explored more deeply.

Adult↗

Depersonalisation disorder: a contemporary overview.

Depersonalisation disorder is characterised by prominent depersonalisation and often derealisation, without clinically notable memory or identity disturbances. The disorder has an approximately 1 : 1 gender ratio with onset at around 16 years of age. The course of the disorder is typically long term and often continuous. Mood, anxiety and personality disorders are often comorbid with depersonalisation disorder but none predict symptom severity. The most common immediate precipitants of the disorder are severe stress, depression and panic, and marijuana and hallucinogen ingestion. Depersonalisation disorder has also been associated with childhood interpersonal trauma, in particular emotional maltreatment. Neurochemical findings have suggested possible involvement of serotonergic, endogenous opioid and glutamatergic NMDA pathways. Brain imaging studies in depersonalisation disorder have revealed widespread alterations in metabolic activity in the sensory association cortex, as well as prefrontal hyperactivation and limbic inhibition in response to aversive stimuli. Depersonalisation disorder has also been associated with autonomic blunting and hypothalamic-pituitary-adrenal axis dysregulation. To date, treatment recommendations and guidelines for depersonalisation disorder have not been established. There are few studies assessing the use of pharmacotherapy in this disorder. Medication options that have been reported include clomipramine, fluoxetine, lamotrigine and opioid antagonists. However, it does not appear that any of these agents have a potent anti-dissociative effect. A variety of psychotherapeutic techniques has been used to treat depersonalisation disorder (including trauma-focused therapy and cognitive-behavioural techniques), although again none of these have established efficacy to date. Overall, novel therapeutic approaches are clearly needed to help individuals experiencing this refractory disorder.

Comorbidity↗

Social and environmental infantilization of aged persons: observations in two adult day care centers.

This study examines the social environments, staff behavior, and social interaction of elderly clients in two adult day care centers. Goffman's (1961) description of the psycho-social effects of the "total institution" is used as a framework for conceptualizing the effects of "partial institutions" on older persons. Using qualitative research techniques, we observed the environments, activities, and interactions of approximately seventy-two clients in two adult day care settings. When the staff and environment were more infantilizing, provided less autonomy, and fewer opportunities for privacy regulation, the clients had lower social interaction with peers. In contrast, when the center had a more adult setting, with age appropriate activities, there was greater privacy regulation, autonomy, social contact, and friendships among clients.

Activities of Daily Living↗

Body perception upon awakening.

12 male subjects were evaluated with a battery of body perception measures before sleep and just after awakening. Personality measures were also obtained. The results indicated a borderline, but not significant, trend at the time of awakening for the body boundary to be reduced in definiteness; and there were sensations that one's body is more dirty, that its openings are more blocked, and that its size is of less expansive proportions. There were also trends for the traits of stability and reflectiveness to predict bodily experiences upon awakening.

Adult↗

An exploration of perception of body boundary, personal space, and body size in elderly persons.

A study of 108 elderly persons using the Body Distortion Questionnaire and the personal space simulation technique test did not support hypotheses that elderly persons with a large personal space will have a larger distortion of body boundary, a larger perception of large body size, a smaller perception of small body size, a larger distortion of body size, and a larger body distortion than elderly persons with a small personal space. The analyses with one-tail t tests showed elderly persons with a small personal space have a larger perception of large body size and a larger distortion of body size than elderly persons with a large personal space. When the extremes of personal space were used the results were the same. Males have a larger personal space and greater distortion of skin perceptions than females.

Aged↗