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1.
Front Psychol ; 15: 1406180, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38933577

RESUMO

Objectives: Bilateral stimulation is a core element of Eye Movement Desensitization and Reprocessing Therapy, a psychotherapeutic intervention for the treatment of Posttraumatic Stress Disorder (PTSD). Promising previous findings showed measurable physiological effects of bilateral stimulation in healthy individuals, but studies that replicated these findings in PTSD patients are sparse. Methods: 23 patients with PTSD and 30 healthy controls were confronted with affective standard scripts (pleasant, neutral, unpleasant) while bilateral tactile stimulation was applied. Monolateral and no stimulation served as control conditions. Noise-induced startle reflex response (valence measure) and galvanic skin response (arousal measure) were used for physiological responses and the valence and arousal scale of the Self-Assessment-Manikin for subjective responses. Results: Both groups showed a subjective distress reduction for unpleasant scripts and a subjective attention increase for positive scripts under bilateral stimulation. In healthy individuals, this was also for physiological measures, and a general startle-reducing effect of bilateral stimulation in the absence of affective stimuli was found. In PTSD patients, however, the effects were restricted on the subjective level, and no concomitant physiological effects were observed. Conclusions and significance: The findings indicate, that generalizing the effects of BLS in healthy individuals to PTSD patients may be problematic. The herein-reported group differences can be explained by PTSD-specific peculiarities in emotion processing and cognitive processing style.

2.
Front Psychiatry ; 14: 1200860, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37711426

RESUMO

Introduction: Numerous studies indicate impaired reward-related learning in individuals with schizophrenia, with various factors such as illness duration, medication, disease severity, and level of analysis (behavioral or neurophysiological data) potentially confounding the results. Patients with schizophrenia who are treated with second-generation antipsychotics have been found to have a less affected reward system. However, this finding does not explain the neural dysfunctions observed in previous studies. This study aimed to address the open question of whether the less impaired reward-related behavior is associated with unimpaired task-related functional connectivity or altered task-related functional connectivity. Methods: The study included 23 participants diagnosed within the schizophrenia spectrum and 23 control participants matched in terms of age, sex, and education. Participants underwent an MRI while performing a monetary incentive delay task and a social incentive delay task. The collected data were analyzed in terms of behavior and functional connectivity. Results: Both groups exhibited a main effect of reward type on behavioral performance, indicating faster reaction times in the social incentive delay task, but no main effect of reward level. Altered functional connectivity was observed in predictable brain regions within the patient group, depending on the chosen paradigm, but not when compared to healthy individuals. Discussion: In addition to expected slower response times, patients with schizophrenia demonstrated similar response patterns to control participants at the behavioral level. The similarities in behavioral data may underlie different connectivity patterns. Our findings suggest that perturbations in reward processing do not necessarily imply disturbances in underlying connectivities. Consequently, we were able to demonstrate that patients with schizophrenia are indeed capable of exhibiting goal-directed, reward-responsive behavior, although there are differences depending on the type of reward.

3.
Artigo em Inglês | MEDLINE | ID: mdl-37569032

RESUMO

Access to the best possible healthcare is a fundamental human right. However, the provision of medical treatment is not only dependent on the actual treatment options available and the type of illness to be treated but is significantly influenced and restricted by structural and legal conditions. This is particularly evident in the case of refugees and other groups such as the so-called "paperless", whose access to medical treatment is de facto seriously impeded or denied altogether. At the same time, these individuals are particularly vulnerable to the development of mental illness for a variety of reasons. Refugees in particular often suffer from trauma sequelae, resulting in a broad range of impairments. Based on a case study of a refugee woman living in her host country, the interactions between mental illness and limited psychiatric/psychotherapeutic treatment options due to legal restrictions are analyzed from a medical perspective. Her initially only medically oriented treatment was insufficient to mitigate the consequences of these restrictions. As it was a protracted treatment process, the legal aspects of her case therefore also had to be decisively considered. This case study shows that the human right to the best possible healthcare can be considerably restricted by structural requirements, which, in the case of sequential traumatization and severe illnesses with suicidal tendencies, can be labelled as structural violence.


Assuntos
Refugiados , Direito à Saúde , Transtornos de Estresse Pós-Traumáticos , Humanos , Feminino , Direitos Humanos , Violência , Transtornos de Estresse Pós-Traumáticos/terapia
4.
Personal Ment Health ; 17(4): 328-351, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37042027

RESUMO

Self-harming behavior is a core symptom of borderline personality disorder. Self-report studies show a correlation between a lack of self-reported negative feelings toward self-cutting cues and the likelihood of future self-destructive behavior. Despite these findings, there has so far been insufficient investigation into the implicit emotional processes evoked by this stimulus type. Forty patients with borderline personality disorder and 35 healthy controls between 20 and 50 years of age were confronted with pictures of self-cutting cues and affective reference pictures. A startle reflex paradigm was used for measuring implicit emotional responses, and the Self-Assessment Manikin was used for subjective responses. In line with previous studies, the patients rated the self-cutting pictures significantly less negatively than healthy individuals. On the physiological level, a significant startle inhibition was observed, indicating an activation of the behavioral approach system. A more detailed analysis showed that this startle inhibition effect was specific to scary pictures, whereas no such effect was observed for bloody wounds and self-cutting instruments. For pleasant standard pictures, in contrast, no startle reflex inhibition and no increase in emotional arousal parameters were found. The data replicate the findings of previous studies, demonstrating a generally diminished emotional reactivity to pleasant stimuli in patients with borderline personality disorder. In addition, a physiological approach reaction to self-cutting pictures was found, especially for the scary pictures. These results might indicate a positive identification with the long-lasting consequences of self-cutting behavior in the patients. Implications for therapy are discussed.


Assuntos
Transtorno da Personalidade Borderline , Humanos , Transtorno da Personalidade Borderline/psicologia , Sinais (Psicologia) , Emoções/fisiologia , Nível de Alerta/fisiologia , Autorrelato
5.
Front Psychol ; 13: 1035371, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36389546

RESUMO

Objectives: Constant Installation of Present Orientation and Safety (CIPOS) is a Eye Movements Desensitization and Reprocessing (EMDR)-derived technique, which is often used to prepare for the treatment of post-traumatic stress disorder (PTSD). It differs from the latter by involving cyclically recurring exercises in reorientation to the present, interspersed between brief periods of exposure to the traumatic material.While EMDR is well established as a therapeutic method, the efficacy and mechanisms of action of CIPOS have not been investigated so far. In this pilot study, an experimental setting was used to record the subjective and physiological effects of the CIPOS intervention compared to a control condition with pure mental exposition. Methods: The study was performed on 30 healthy volunteers aged from 20 to 30 years. Distress was induced using audio files of subjectively stressful situations. Subjective distress was measured via the Subjective Units of Distress Scale (SUD), while physiological indicators (noise-induced startle reflex, skin conductance level) were used as measures for objective stress. For each condition, pre- and post-intervention comparisons were calculated. Results: In both groups, startle reflex potentiation and mean skin conductance level significantly decreased. In the group with CIPOS intervention, but not in the control group, a significant decrease in the SUD value was found. Conclusion and significance: The results show that the CIPOS technique is as effective as pure mental exposition in reducing physiological stress. In addition, a superiority in reducing subjective distress (indicating a simplified reassessment of the stressful material) was found compared to pure mental exposition. Possible explanations of these effects are discussed.

6.
Artigo em Inglês | MEDLINE | ID: mdl-36294018

RESUMO

Refugees constitute a vulnerable group with an increased risk of developing trauma-related disorders. From a clinician's integrative perspective, navigating the detrimental impact of the social, economic, structural, and political factors on the mental health of refugees is a daily experience. Therefore, a collective effort must be made to reduce health inequities. The authors developed a treatment concept which provides broader care structures within a scientific practitioner's approach. The resulting "Trauma Network" addresses the structural challenges for refugees in Middle Hesse. Accompanying research provided a sound basis for further discussions with policy-makers to improve the situation for refugees in the short- and long-term.


Assuntos
Refugiados , Humanos , Refugiados/psicologia , Saúde Mental , Alemanha , Política
7.
Z Psychosom Med Psychother ; 68(1): 87-96, 2022 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-35311499

RESUMO

Grieving in high-speed society. An acceleration-focused temporal perspective Objectives: How long does it take the bereaved to cope with a loss of a significant other? Early findings assume weeks. Later studies speak of years. Nevertheless, the grace period for the bereaved in the modern world seems to be constantly shortening, despite objectively constant time, multiple time gains and savings. Methods: The process of acceleration described by Hartmut Rosa offers an explanation for this paradoxical disproportion. From a time-analytic perspective, it becomes clear that coping with loss runs counter to the dynamization of society. Results: Grief as a bio-psychological process cannot be accelerated as such. Instead of therapy-immanent solutions, changes are needed that are reflected on a societal level. Conclusions: The approaches 'grief literacy' and 'compassionate communities' can help to implement bereavement into the society as a whole.


Assuntos
Luto , Pesar , Aceleração , Adaptação Psicológica , Humanos
8.
Psychol Trauma ; 13(6): 713-721, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32816515

RESUMO

OBJECTIVE: Trauma-focusing treatments such as eye movement desensitization and reprocessing (EMDR) are highly effective in reducing the core symptoms of posttraumatic stress disorder (PTSD), for example, intrusive memories and flashbacks, hyperarousal, and avoidance. Additionally, suffering from PTSD is often accompanied by a broader set of mental comorbidities and complaints such as depression, anxiety disorders or somatization, and disturbed self-regulation abilities. According to the Adaptive Information Processing model (Shapiro, 2001), the processing of pathogenic memories can help not only to reduce the PTSD symptoms but also accompanying complaints additionally. METHOD: In an eye movement desensitization and reprocessing treatment study of 116 patients suffering from PTSD, we targeted the course of additional symptoms and structural skills using the Symptom Checklist-90 SCL-90, Beck Depression Inventory, Toronto Alexithymia Scale-20, and Hannover Selbstregulationsinventar in a pre-post design. RESULTS: The results showed that apart from alleviating the PTSD symptoms, exposure-based treatment of pathogenic memories led to a significant decrease in accompanying symptoms such as depression, anxiety, and somatization. Furthermore, patients improved their structural abilities with regard to emotional perception and differentiation, controlling impulses, tolerating frustration, and regulating self-esteem. CONCLUSION: PTSD core symptoms and comorbid complaints are closely interlinked and can be seen as a traumatic-stress cluster, which is accompanied by significant impairments in self- and emotion regulation. Therefore, treatment concepts should explicitly foster emotional processing and structural abilities to target the posttraumatic stress responses entirely. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Assuntos
Dessensibilização e Reprocessamento através dos Movimentos Oculares , Transtornos de Estresse Pós-Traumáticos , Comorbidade , Dessensibilização e Reprocessamento através dos Movimentos Oculares/métodos , Humanos , Escalas de Graduação Psiquiátrica , Transtornos de Estresse Pós-Traumáticos/psicologia
9.
Front Psychiatry ; 11: 324, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32411027

RESUMO

Unaccompanied refugee minors (URM) represent one of the most vulnerable refugee groups due to their young age, developmental status, and insufficient coping strategies. Clinical observations indicate that the frequency of mental health problems varies between different URM subgroups. In the present research project, clinical interviews as a source of qualitative data were combined with quantitative psychometric information in a mixed-method approach in order to study the patterns of mental health problems in 561 URM from four different language groups (Arabic, Farsi, Somali, and Tigrinya) immediately after arrival in the host country (Germany). Qualitative analysis obtained as differentiating categories "language, countries of origin, age, and gender"; quantitatively, the Refugee Health Screener (RHS-15) was applied. According to the positive screening results, the highest number of mental complaints was returned by children and adolescents speaking Farsi (65.9%) and Somali (65.8%). They were followed by URM speaking Arabic (49.4%) and Tigrinya (43.3%). The results were influenced not only by origin, but also by age (with higher burden among older Farsi-speaking URM) and gender (with higher burden among male URM). Although the prevalences in URM subgroups differ, the observed high rates of positive screening results in our sample of URM from Germany substantiate the need for early detection of mental complaints and appropriate mental health care for at least every second URM.

10.
Ethn Health ; 24(8): 897-908, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-29081242

RESUMO

Objectives: Although EU member states are obligated to take special account of the situation of particularly vulnerable refugees, appropriate and specific measures to detect affected asylum seekers are not yet available. This study tries to pave the way for the implementation of an adequate instrument which at the same time assesses these needs of suffering people whilst responding to the need for mental health assessments specifically designed for refugees. This was done by testing the implementation of a screening method (Refugee Health Screener RHS-15) for trauma related mental health problems in refugees. Design: Two refugee samples in Germany (differing in arrival time: 126 applicants for asylum residing in the initial reception center and 116 living in long term communal accommodations) were assessed with the culturally sensitive Refugee Health Screener (RHS-15) to detect the incidence of mental health problems amongst them. Test fairness, reasonableness, susceptibility, transparency, acceptance, external design, utility and economy of the instrument were examined to check the applicability of the RHS-15 standardization test. Results: The RHS-15 indicates a good practical feasibility as the examination of the focused psychometric characteristics suggests. It became apparent, that implementing a screening procedure depends on political, legal and medical context factors that need to be considered. 2/3 of the participants had a positive screening result, which needs further diagnostic clarification in a second step. Conclusion: The RHS-15 seems to be practicable, economical, and rapidly deployable for the widespread detection of traumatic disorders in refugees living in Europe. The tool proved useful to aid diagnostic assessments and provide treatment to individuals in need, however the time of examination (resp. the duration of staying in the target land) influences the results.


Assuntos
Programas de Rastreamento/organização & administração , Trauma Psicológico/diagnóstico , Trauma Psicológico/etnologia , Refugiados/psicologia , Inquéritos e Questionários/normas , Adulto , Feminino , Alemanha/epidemiologia , Humanos , Masculino , Programas de Rastreamento/legislação & jurisprudência , Programas de Rastreamento/normas , Política , Psicometria , Reprodutibilidade dos Testes , Populações Vulneráveis/psicologia , Adulto Jovem
11.
Depress Res Treat ; 2017: 8930432, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28912969

RESUMO

OBJECTIVES: Vietnamese in Germany represent a scarcely researched and vulnerable group for mental health problems, especially under exposure to migration-related stressors (MRS). This study analyzes the effect of those MRS on the severity level and symptom pattern of depression. DESIGN: We analyzed the data of 137 depressed Vietnamese patients utilizing Germany's first Vietnamese psychiatric outpatient clinic. Hierarchical linear regression models were applied to investigate how the quantity of MRS influenced (1) the overall severity of self-reported depression symptoms; (2) the cognitive, affective, and somatic BDI-II subscale; and (3) the single BDI-II items of these subscales. RESULTS: A greater number of MRS were related to a higher severity level of depression in general, as well as to a higher level on the cognitive depression subscale in particular. The BDI-II single items pessimism, past failure, guilt feelings, punishment feelings, and suicidal thoughts were particularly associated with a higher quantity of perceived MRS. CONCLUSION: Among depressed Vietnamese migrants in Germany, a higher number of reported MRS were associated with higher overall depression severity. Within the domains of depression, particularly the cognitive domain was linked to perceived MRS. The association between MRS and suicidal thoughts is clinically highly relevant.

12.
Psychother Psychosom ; 85(6): 357-365, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27744424

RESUMO

BACKGROUND: Currently, there is controversy on the possible benefits of dual-attention tasks during eye movement desensitization and reprocessing (EMDR) for patients with posttraumatic stress disorder (PTSD). METHODS: A total of 139 consecutive patients (including 85 females) suffering from PTSD were allocated randomly among 3 different treatment conditions: exposure with eyes moving while fixating on the therapist's moving hand (EM), exposure with eyes fixating on the therapist's nonmoving hand (EF), and exposure without explicit visual focus of attention as control condition (EC). Except for the variation in stimulation, treatment strictly followed the standard EMDR manual. Symptom changes from pre- to posttreatment were measured with the Clinician-Administered PTSD Scale (CAPS) by an investigator blinded to treatment allocation. RESULTS: In total, 116 patients completed the treatment, with an average of 4.6 sessions applied. Intention-to-treat analysis revealed a significant improvement in PTSD symptoms with a high overall effect size (Cohen's d = 1.96, 95% CI: 1.67-2.24) and a high remission rate of PTSD diagnosis (79.8%). In comparison to the control condition, EM and EF were associated with significantly larger pre-post symptom decrease (ΔCAPS: EM = 35.8, EF = 40.5, EC = 31.0) and significantly larger effect sizes (EM: d = 2.06, 95% CI: 1.55-2.57, EF: d = 2.58, 95% CI: 2.01-3.11, EC: d = 1.44, 95% CI: 0.97-1.91). No significant differences in symptom decrease and effect size were found between EM and EF. CONCLUSIONS: Exposure in combination with an explicit external focus of attention leads to larger PTSD symptom reduction than exposure alone. Eye movements have no advantage compared to visually fixating on a nonmoving hand.


Assuntos
Atenção , Dessensibilização e Reprocessamento através dos Movimentos Oculares/métodos , Movimentos Oculares , Transtornos de Estresse Pós-Traumáticos/terapia , Adulto , Feminino , Alemanha , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Escalas de Graduação Psiquiátrica , Resultado do Tratamento
14.
Z Psychosom Med Psychother ; 57(1): 51-61, 2011.
Artigo em Alemão | MEDLINE | ID: mdl-21432838

RESUMO

OBJECTIVES: Reduced concentrations of dopamine in prefrontal brain structures may play a role in alexithymia. Dopamine degradation in the orbitofrontal cortex is regulated by catechol-O-methyltransferase (COMT), and a functional single nucleotide polymorphism of the COMT gene, Val158Met, has been related to psychiatric illness. This study examines the association between the COMT Val158Met gene polymorphism, and alexithymia. METHODS: 120 healthy students and 120 patients with mental disorders were genotyped for the COMT Val158Met polymorphism. Additionally, the Toronto Alexithymia Scale (TAS-20) was administered. RESULTS: COMT genotype did not show a significant correlation with the TAS-20 in either group. CONCLUSIONS: COMT Val158Met polymorphism alone does not seem to be a major factor in alexithymia in healthy students. This is true even if patients with mental disorders covering a broader range of alexithymia are included. Thus, other genes, possibly interacting with cultural, environmental, and developmental factors, may be implicated.


Assuntos
Sintomas Afetivos/genética , Alelos , Catecol O-Metiltransferase/genética , Polimorfismo Genético/genética , Adolescente , Adulto , Sintomas Afetivos/diagnóstico , Sintomas Afetivos/fisiopatologia , Sintomas Afetivos/psicologia , Substituição de Aminoácidos/genética , Comorbidade , Dopamina/metabolismo , Feminino , Genótipo , Humanos , Masculino , Transtornos Mentais/diagnóstico , Transtornos Mentais/genética , Transtornos Mentais/fisiopatologia , Transtornos Mentais/psicologia , Metionina/genética , Pessoa de Meia-Idade , Inventário de Personalidade , Polimorfismo de Nucleotídeo Único/genética , Córtex Pré-Frontal/fisiopatologia , Valores de Referência , Valina/genética , Adulto Jovem
15.
Scand J Psychol ; 52(2): 179-84, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21054420

RESUMO

Alexithymia is associated with a limited access to inner emotional processes. Furthermore, alexithymia is assumed to be characterized by a limited ability to use imagination. To evaluate the frequently proposed thesis of a reduced imagination ability in alexithymic persons, 25 high and 24 low alexithymic women self-rated their imagination ability. Furthermore, the electrodermal activity (EDA) during script-driven emotional imagination was determined and valence, arousal, and vividness of the respective imaginations were rated. Our results indicate no significant differences between high and low alexithymic women in the self-rated imagination ability, the EDA during imagination and the ratings of valence, arousal and vividness. The study provides evidence that healthy high alexithymic women are capable of differentiated emotional imagination.


Assuntos
Sintomas Afetivos/psicologia , Emoções/fisiologia , Imaginação/fisiologia , Adulto , Nível de Alerta/fisiologia , Medo/fisiologia , Feminino , Resposta Galvânica da Pele/fisiologia , Humanos , Autorrelato , Inquéritos e Questionários
16.
Psychother Res ; 19(3): 323-31, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-20183393

RESUMO

This naturalistic study aimed to determine whether the initial degree of alexithymia can predict treatment outcome of psychodynamically oriented multimodal therapy. The Toronto Alexithymia Scale-26, the Global Severity Index (GSI), and the Depression subscale of the Symptom Checklist-90-Revised were administered at hospital admission and at discharge to 480 inpatients with various psychological disorders. GSI and depressive symptoms decreased significantly during treatment. High initial alexithymia total scores significantly predicted treatment outcome, especially in patients with somatoform disorders. Difficulties in verbalizing feelings had the strongest association with less favourable symptom improvement. Although significant, the predictive values were relatively small, and patients with alexithymia indeed benefited from therapy. Implications of these results are discussed for the specificity of disorders and therapeutic approach.


Assuntos
Sintomas Afetivos/diagnóstico , Sintomas Afetivos/reabilitação , Psicoterapia/métodos , Adulto , Sintomas Afetivos/psicologia , Feminino , Hospitalização , Humanos , Masculino , Estudos Prospectivos , Índice de Gravidade de Doença , Inquéritos e Questionários
17.
J Psychosom Res ; 65(2): 173-80, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18655863

RESUMO

BACKGROUND: Although alexithymia is associated with several psychiatric disorders, there has been little research into the effects of psychodynamic psychotherapies on this condition. Here, the influence of inpatient multimodal psychodynamic psychotherapy on alexithymia and symptom load was evaluated in a large sample of patients. METHODS: Alexithymia [measured with the Toronto Alexithymia Scale (TAS)-26] and psychological stress and depression [measured with the Symptom Checklist 90 Revised (SCL-90-R)] were evaluated at admission and after inpatient multimodal psychotherapy in patients with various psychosomatic and psychiatric disorders admitted to this unit between 2002 and 2005. Patients undergoing both short-term (up to 4 weeks) and long-term treatment (8-12 weeks) were studied. Analyses of covariance were used to analyse the data on depression (SCL-90-R) and psychological stress (SCL-90-R), and correlations between admission and discharge scores for the TAS-26 were computed to evaluate mean and relative stability of alexithymia. RESULTS: Data on 397 of the 568 patients admitted were analysed. Psychological stress and depression (SCL-90-R) decreased significantly during the study across all diagnostic groups. The TAS-26 total score also decreased significantly, showing that there was no mean stability of alexithymic characteristics. However, the significance of decrease was lost when psychological stress and depression were controlled for. Highly significant correlations between TAS-26 sores before and after treatment reflected high relative stability of alexithymia. CONCLUSIONS: During inpatient multimodal psychodynamic treatment, the symptom load and alexithymia in our patients decreased. The high relative stability of alexithymia shown supports the view that alexithymia is a relative stable personality trait.


Assuntos
Sintomas Afetivos/terapia , Transtornos Neuróticos/terapia , Admissão do Paciente , Transtornos da Personalidade/terapia , Terapia Psicanalítica , Transtornos Psicofisiológicos/terapia , Transtornos Somatoformes/terapia , Adulto , Sintomas Afetivos/diagnóstico , Sintomas Afetivos/psicologia , Comorbidade , Depressão/diagnóstico , Depressão/psicologia , Depressão/terapia , Feminino , Alemanha , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Transtornos Neuróticos/diagnóstico , Transtornos Neuróticos/psicologia , Transtornos da Personalidade/diagnóstico , Transtornos da Personalidade/psicologia , Inventário de Personalidade , Transtornos Psicofisiológicos/diagnóstico , Transtornos Psicofisiológicos/psicologia , Psicoterapia de Grupo , Transtornos Somatoformes/diagnóstico , Transtornos Somatoformes/psicologia
18.
Psychother Psychosom Med Psychol ; 54(12): 437-44, 2004 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-15551188

RESUMO

In alexithymia a frontal dysfunction is supposed to be a neurobiological correlate. This study focuses on distorted patterns of neuronal activity evoked by emotional stimuli in alexithymics and controls. Out of hospitalised patients with psychosomatic diseases 8 patients with a high score (HA) and 8 with a low one (NA) on the TAS-20 were investigated with fMRI during emotional stimulation which included pictures evoking anxiety and disgust as well as neutral illustrations. As response to negative affect arousing visual stimulation HA in comparison to NA showed a lower activation in the right medial prefrontal cortex and in the right amygdala. The results were significant for the emotion disgust. The results support the existence of a complex central feedback circuit consisting of regions of the prefrontal cortex and limbic structures to process negative affects. Hypothetically a fundamental factor for the emergence of alexithymic traits is an inhibiting process between affect processing (e. g. medial prefrontal cortex, anterior cingulum) and affect generating structures (e. g. amygdala). Furthermore our findings confirm the hypothesis that alexithymia is a disorder of higher cerebral function.


Assuntos
Sintomas Afetivos/fisiopatologia , Emoções/fisiologia , Neurônios/fisiologia , Adulto , Sintomas Afetivos/psicologia , Encéfalo/fisiopatologia , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Testes Neuropsicológicos , Escalas de Graduação Psiquiátrica
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