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1.
Am Psychol ; 79(3): 344-346, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38635196

RESUMO

In this invited commentary, I address what I see as the major contributions Rubenstein et al. (2024) have made to challenging the hegemony of exposure therapies for trauma-exposed persons. These include a thorough review of the history of the rise of exposure therapies, the identification of posttrauma responses as forms of anxiety disorders, and an extensive discussion of the neurobiology of the trauma response. Additionally, Rubenstein et al. expose the very high dropout rates in studies of exposure therapies and ways in which many traumatized people have not found them helpful. This article brings the so-called "gold standard" back to its rightful position as one possible, occasionally helpful way of assisting some, but not all, traumatized people. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Terapia Implosiva , Humanos , Povidona , Transtornos de Ansiedade
2.
BMC Psychiatry ; 24(1): 225, 2024 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-38532374

RESUMO

BACKGROUND: Preliminary evidence shows promising treatment outcomes at short-term follow-up for intensive posttraumatic stress disorder (PTSD) treatment, but long-term follow-up studies are sparse. This study is a sequel to a previous pilot study and open trial, set out to investigate treatment outcomes at 12-month follow-up for outpatients completing an 8-day intensive treatment for PTSD. METHODS: All patients were diagnosed with PTSD and had multiple previous psychotherapy attempts (M = 3.1). Patients were assessed at pre-treatment, post-treatment, 3- and 12-month follow-up. Of 35 treated patients, 32 (91.4%) attended the long-term follow-up assessment. The treatment programme combined prolonged exposure therapy, eye movement desensitization and reprocessing, and physical activity. RESULTS: The effect sizes indicated large reductions in symptoms of PTSD, depression, anxiety, interpersonal problems, and well-being. Changes in functioning showed a small-medium effect. Results were stable across the follow-up period. The treatment response rates showed that 46-60% of patients achieved recovery with respect to PTSD symptoms, and that 44-48% no longer met diagnostic criteria for PTSD. CONCLUSIONS: Time-limited and concentrated outpatient treatment for PTSD can yield large and enduring positive outcomes. Controlled trials are needed to establish relative efficacy. TRIAL REGISTRATION: The study was registered in Current Research Information System In Norway (Cristin). Cristin-project-ID: 654,790. Date of registration: 18.03.2019.


Assuntos
Dessensibilização e Reprocessamento através dos Movimentos Oculares , Terapia Implosiva , Transtornos de Estresse Pós-Traumáticos , Humanos , Dessensibilização e Reprocessamento através dos Movimentos Oculares/métodos , Seguimentos , Terapia Implosiva/métodos , Pacientes Ambulatoriais , Projetos Piloto , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Resultado do Tratamento
3.
J Affect Disord ; 354: 385-396, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38508457

RESUMO

Exposure and response prevention (ERP) is an evidence-based treatment for obsessive-compulsive disorder (OCD). Theories for how it works vary in their emphasis on active mechanisms of change. The current study aimed to clarify mechanisms of change in ERP for OCD using network analysis, comparing ERP networks at the start and end of intensive treatment (partial hospital and residential). In our sample of 182 patients, the most central node in both networks was engagement with exposure, which was consistently related to greater understanding of ERP rationale, higher willingness, and less ritualization, accounting for all other variables in the network. There were no significant differences in networks between the start and end of treatment. These results suggest that nonspecific parameters like facilitating engagement in exposures without ritualizing and providing a clear rationale to clients may be key to effective treatment. As such, it may be useful for clinicians to spend adequate time underscoring the need to eliminate rituals to fully engage in exposure tasks and explaining the rationale for ERP prior to doing exposures, regardless of theoretical orientation. Nonetheless, findings represent group-level statistics and more fine-grained idiographic analyses may reveal individual-level differences with respect to central mechanisms of change. Other limitations include demographic homogeneity of our sample.


Assuntos
Terapia Implosiva , Transtorno Obsessivo-Compulsivo , Humanos , Transtorno Obsessivo-Compulsivo/terapia , Resultado do Tratamento , Comportamento Compulsivo , Terapia Implosiva/métodos
4.
Eur J Psychotraumatol ; 15(1): 2320607, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38436944

RESUMO

Background: Trauma-focused cognitive behavioural therapy such as prolonged exposure is considered firsthand choice for treatment of posttraumatic stress disorder (PTSD) but is seldom available in regular care. Digital therapy is proposed to bridge this gap, but its effectiveness for severe and complex PTSD is uncertain. The primary objective of the current study was to examine the feasibility, acceptability, and preliminary effects of digital therapist-guided prolonged exposure (Huddinge Online Prolonged Exposure; HOPE).Method: Thirty participants with moderate to severe PTSD, with the majority self-reporting complex PTSD symptoms, received HOPE over a ten-week period. Eighty percent of participants had been diagnosed with other psychiatric comorbidity by a mental health professional. Primary outcome was the feasibility and acceptability of treatment. Participants were repeatedly assessed using clinician- and self-rated outcome measures at baseline, during the treatment period, post-treatment, and at 1-month and 6-month follow-ups to estimate preliminary treatment effects. The Clinician Administered PTSD Scale version 5 (CAPS-5), administered by independent assessors, evaluated PTSD symptom severity.Results: HOPE proved feasible and effective, delivering evidence-based treatment content in a psychiatric outpatient setting with reduced therapist time. The treatment was well-tolerated, with no severe adverse events and a 17% dropout rate. Sixty-four percent completed the exposure-based portion of the treatment, and overall satisfaction measured by the Client Satisfaction Questionnaire was moderate. Furthermore, significant reductions in PTSD symptoms as assessed with the CAPS-5 (Cohen's d = 1.30 [95% CI -1.79 to -0.82]) at the primary endpoint 1 month which were sustained at the 6-month follow up.Conclusion: Altogether, this study indicate feasibility of treating severe and complex PTSD through a digital PE intervention, thereby building upon and extending previous research findings. Large-scale controlled trials are needed to further validate the specific effect and long-term benefits of HOPE.Trial registration: ClinicalTrials.gov identifier: NCT05560854.


HOPE, a digital therapist-guided prolonged exposure programme, demonstrated feasibility and preliminary effects for severe and complex PTSD in a psychiatric outpatient setting, while requiring less therapist time.HOPE was well-tolerated by participants, with a relatively low dropout rate and average overall satisfaction.Significant reductions in PTSD symptoms were observed, and these benefits were sustained at the 6-month follow-up.


Assuntos
Terapia Cognitivo-Comportamental , Terapia Implosiva , Transtornos de Estresse Pós-Traumáticos , Humanos , Estudos de Viabilidade , Transtornos de Estresse Pós-Traumáticos/terapia , Pessoal de Saúde
5.
Contemp Clin Trials ; 139: 107475, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38365173

RESUMO

There are high rates of posttraumatic stress disorder (PTSD) among treatment-seeking veterans with substance use disorders (SUD). While addiction programs traditionally do not address PTSD, there is evidence that trauma treatments for individuals with this comorbidity have improved PTSD and SUD outcomes. Written exposure therapy (WET), a five-session evidence-based psychotherapy (EBP) for PTSD, has high patient satisfaction, and lower dropout compared to other EBPs for PTSD. WET may be ideally suited for clinical settings that may not have the trauma expertise found in PTSD specialty clinics, given it requires less training time, treatment sessions, preparation time, and therapist involvement than existing EBPs, and no homework assignments. This paper describes the design, methodology, and protocol of a randomized clinical trial to evaluate whether treatment as usual (TAU) plus WET (n = 51) is superior to TAU plus a neutral topic writing condition (n = 51) on both PTSD and addiction outcomes for veterans in SUD treatment. The primary hypothesis is that participants assigned to TAU+WET, compared to those in TAU+ neutral topic writing, will report reduced symptoms of PTSD. The secondary hypothesis is that veterans receiving WET will have greater decreases in number of days of substance use compared to TAU+ neutral topic controls at follow-up. Assessments will take place at baseline, post-treatment, 8-week, and 12-week follow-up. Exploratory aims will examine the association between heart rate variability and treatment outcomes. If results prove promising, they will support WET as an effective brief, easy to disseminate, adjunct to current SUD treatment for veterans with comorbid PTSD. Trial registration: ClinicalTrials.gov ID NCT05327504.


Assuntos
Terapia Implosiva , Transtornos de Estresse Pós-Traumáticos , Transtornos Relacionados ao Uso de Substâncias , Veteranos , Humanos , Terapia Implosiva/métodos , Ensaios Clínicos Controlados Aleatórios como Assunto , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/terapia , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/terapia , Resultado do Tratamento , Redação
6.
PLoS One ; 19(2): e0297548, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38330004

RESUMO

Software Defined Network (SDN) has alleviated traditional network limitations but faces a significant challenge due to the risk of Distributed Denial of Service (DDoS) attacks against an SDN controller, with current detection methods lacking evaluation on unrealistic SDN datasets and standard DDoS attacks (i.e., high-rate DDoS attack). Therefore, a realistic dataset called HLD-DDoSDN is introduced, encompassing prevalent DDoS attacks specifically aimed at an SDN controller, such as User Internet Control Message Protocol (ICMP), Transmission Control Protocol (TCP), and User Datagram Protocol (UDP). This SDN dataset also incorporates diverse levels of traffic fluctuations, representing different traffic variation rates (i.e., high and low rates) in DDoS attacks. It is qualitatively compared to existing SDN datasets and quantitatively evaluated across all eight scenarios to ensure its superiority. Furthermore, it fulfils the requirements of a benchmark dataset in terms of size, variety of attacks and scenarios, with significant features that highly contribute to detecting realistic SDN attacks. The features of HLD-DDoSDN are evaluated using a Deep Multilayer Perception (D-MLP) based detection approach. Experimental findings indicate that the employed features exhibit high performance in the detection accuracy, recall, and precision of detecting high and low-rate DDoS flooding attacks.


Assuntos
Benchmarking , Terapia Implosiva , Inundações , Internet , Software
7.
Contemp Clin Trials ; 138: 107435, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38211725

RESUMO

INTRODUCTION: Posttraumatic stress disorder (PTSD) results in substantial costs to society. Prevalence of PTSD among adults is high, especially among those presenting to primary care settings. Evidence-based psychotherapies (EBPs) for PTSD are available but dissemination and implementation within primary care settings is challenging. Building Experience for Treating Trauma and Enhancing Resilience (BETTER) examines the effectiveness of integrating Written Exposure Therapy (WET) within primary care collaborative care management (CoCM). WET is a brief exposure-based treatment that has the potential to address many challenges of delivering PTSD EBPs within primary care settings. METHODS: The study is a hybrid implementation effectiveness cluster-randomized controlled trial in which 12 Federally Qualified Health Centers (FQHCs) will be randomized to either CoCM plus WET (CoCM+WET) or CoCM only with 60 patients within each FQHC. The primary aim is to evaluate the effectiveness of CoCM+WET to improve PTSD and depression symptom severity. Secondary treatment outcomes are mental and physical health functioning. The second study aim is to examine implementation of WET within FQHCs using FQHC process data and staff interviews pre- and post-intervention. Exploratory aims are to examine potential moderators and mediators of the intervention. Assessments occur at baseline, and 3- and 12-month follow-up. CONCLUSION: The study has the potential to impact practice and improve clinical and public health outcomes. By establishing the effectiveness and feasibility of delivering a brief trauma-focused EBP embedded within CoCM in primary care, the study aims to improve PTSD outcomes for underserved patients. TRIAL REGISTRATION: (Clinicaltrials.govNCT05330442).


Assuntos
Terapia Implosiva , Transtornos de Estresse Pós-Traumáticos , Adulto , Humanos , Transtornos de Estresse Pós-Traumáticos/terapia , Resultado do Tratamento , Intervenção na Crise , Atenção Primária à Saúde
8.
PLoS One ; 19(1): e0296879, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38252659

RESUMO

Although ubiquitous in modern vehicles, Controller Area Networks (CANs) lack basic security properties and are easily exploitable. A rapidly growing field of CAN security research has emerged that seeks to detect intrusions or anomalies on CANs. Producing vehicular CAN data with a variety of intrusions is a difficult task for most researchers as it requires expensive assets and deep expertise. To illuminate this task, we introduce the first comprehensive guide to the existing open CAN intrusion detection system (IDS) datasets. We categorize attacks on CANs including fabrication (adding frames, e.g., flooding or targeting and ID), suspension (removing an ID's frames), and masquerade attacks (spoofed frames sent in lieu of suspended ones). We provide a quality analysis of each dataset; an enumeration of each datasets' attacks, benefits, and drawbacks; categorization as real vs. simulated CAN data and real vs. simulated attacks; whether the data is raw CAN data or signal-translated; number of vehicles/CANs; quantity in terms of time; and finally a suggested use case of each dataset. State-of-the-art public CAN IDS datasets are limited to real fabrication (simple message injection) attacks and simulated attacks often in synthetic data, lacking fidelity. In general, the physical effects of attacks on the vehicle are not verified in the available datasets. Only one dataset provides signal-translated data but is missing a corresponding "raw" binary version. This issue pigeon-holes CAN IDS research into testing on limited and often inappropriate data (usually with attacks that are too easily detectable to truly test the method). The scarcity of appropriate data has stymied comparability and reproducibility of results for researchers. As our primary contribution, we present the Real ORNL Automotive Dynamometer (ROAD) CAN IDS dataset, consisting of over 3.5 hours of one vehicle's CAN data. ROAD contains ambient data recorded during a diverse set of activities, and attacks of increasing stealth with multiple variants and instances of real (i.e. non-simulated) fuzzing, fabrication, unique advanced attacks, and simulated masquerade attacks. To facilitate a benchmark for CAN IDS methods that require signal-translated inputs, we also provide the signal time series format for many of the CAN captures. Our contributions aim to facilitate appropriate benchmarking and needed comparability in the CAN IDS research field.


Assuntos
Benchmarking , Terapia Implosiva , Animais , Reprodutibilidade dos Testes , Columbidae , Inundações
9.
Eur J Psychotraumatol ; 15(1): 2302703, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38264969

RESUMO

Background: Recent practice guidelines strongly recommend evidence-based psychotherapies (EBPs) as the first-line treatment for post-traumatic stress disorder (PTSD). However, previous studies found barriers to the implementation of EBPs and a relatively high dropout rate in clinical settings. After proving the efficacy of prolonged exposure (PE) in Japan [Asukai, N., Saito, A., Tsuruta, N., Kishimoto, J., & Nishikawa, T. (2010). Efficacy of exposure therapy for Japanese patients with posttraumatic stress disorder due to mixed traumatic events: A randomized controlled study. Journal of Traumatic Stress, 23(6), 744-750. https://doi.org/10.1002/jts.20589], we began implementing PE in a real-world clinical setting at the Victim Support Center of Tokyo (VSCT).Objective: We aimed to investigate the effectiveness and benefit of PE for crime-induced PTSD among VSCT clients and what causes dropout from treatment.Method: Of 311 adult clients who received counselling from clinical psychologists at VSCT due to violent or physical crime victimization from April 2008 through December 2019, 100 individuals received PE and participated in this study. Their PTSD symptoms were evaluated before and after treatment using the Impact of Event Scale-Revised and the Clinician-Administered PTSD Scale for DSM-IV.Results: A total of 93 participants completed PE and seven dropped out after six sessions or less. The completers group improved in PTSD symptoms with significant score differences between pre- and post-treatment in IES-R and CAPS-IV. Participants' symptoms did not exacerbate after treatment. Forty of 49 completers who left their workplace or college/school after victimization returned to work or study shortly after treatment. Compared to the completers, all dropout participants were women and younger. The majority were rape survivors, with significantly shorter intervals between victimization and treatment. The reasons for dropout were difficulty scheduling treatment between work/study schedules and manifestation of bipolar disorder or physical illness.Conclusions: PE can be implemented with significant effectiveness and a low dropout rate in a real-world clinical setting if advantages in the system and policies, local organizational context, fidelity support and patient engagement are fortified.


We conducted prolonged exposure (PE) with a low dropout rate for crime-induced PTSD in a non-Western real-world practice setting.Patient outcomes and low dropout rate of PE for PTSD in this study may be due to advantages in the following areas: system and policies, local organizational context, fidelity support and patient engagement.When introducing PE for PTSD, it is important to confirm that patients can be reasonably engaged with PE, and to carefully assess the status of other psychiatric and physical illnesses.


Assuntos
Transtorno Bipolar , Vítimas de Crime , Terapia Implosiva , Adulto , Humanos , Feminino , Masculino , Manual Diagnóstico e Estatístico de Transtornos Mentais , Projetos de Pesquisa
10.
Contemp Clin Trials ; 138: 107445, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38237674

RESUMO

BACKGROUND: Obsessive compulsive disorder (OCD) is effectively treated with exposure and response prevention (ERP), yet very few veterans receive ERP for OCD within the Veterans Health Administration (VHA). Veterans are a clinically complex population, and no prior research has evaluated the effectiveness of ERP in veterans with OCD or comorbid OCD and posttraumatic stress disorder (PTSD). Given the limited accessibility of ERP-trained providers within VHA, assessment of video telehealth (VTH) delivery of ERP is warranted. METHODS: A sample of 160 veterans with OCD (80 diagnosed with comorbid PTSD) will be randomly assigned to receive up to 16 sessions of ERP or a stress management training control delivered via VTH. Assessments will occur at baseline, posttreatment, and 6-month follow-up. The primary outcome will evaluate the impact of ERP on participants' functioning, and secondary outcomes will include quality of life and OCD symptoms. At posttreatment, qualitative interviews with veterans, clinicians, and administrators will explore barriers and facilitators to treatment delivery, and the implementation potential of ERP. CONCLUSIONS: Results will provide direction for the treatment of OCD and comorbid PTSD in veterans, as well as guidance for future implementation efforts for ERP within VHA. CLINICALTRIALS: gov Identifier:NCT05240924.


Assuntos
Terapia Implosiva , Transtorno Obsessivo-Compulsivo , Veteranos , Humanos , Terapia Implosiva/métodos , Qualidade de Vida , Transtorno Obsessivo-Compulsivo/epidemiologia , Transtorno Obsessivo-Compulsivo/terapia , Resultado do Tratamento , Ensaios Clínicos Controlados Aleatórios como Assunto
12.
Cogn Behav Ther ; 53(1): 70-86, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37969001

RESUMO

Exposure and cognitive-based therapies are both effective for PTSD, but knowledge of which intervention is best for which patient is lacking. This lack of knowledge is particularly noticeable for group treatments, as no study has examined whether responses to different group therapies are associated with different pretreatment characteristics. Here, we explored whether pretreatment levels of three types of psychological characteristics-PTSD symptom clusters, posttraumatic cognitions, and emotion regulation difficulties-were associated with symptom reduction during group-delivered cognitive versus exposure-based PTSD treatment. Participants were Veterans with PTSD drawn from two previous clinical trials: one of group CPT (GCPT; n = 32) and the other of group-based exposure therapy (GBET; n = 21). Growth curve modeling was used to identify pretreatment variables that predicted weekly PTSD symptom changes during each therapy. Higher posttraumatic cognitions at pretreatment predicted steeper PTSD symptom reduction during GCPT but not GBET. Additionally, symptom reduction during each therapy was associated with different pretreatment emotion regulation difficulties: difficulties with goal-directed behavior for GBET and lack of emotional clarity and limited access to emotion regulation strategies for GCPT. These findings suggest that assigning Veterans to a group PTSD therapy that better matches their pretreatment psychological profile might facilitate a better therapeutic response.


Assuntos
Terapia Cognitivo-Comportamental , Terapia Implosiva , Transtornos de Estresse Pós-Traumáticos , Veteranos , Humanos , Veteranos/psicologia , Transtornos de Estresse Pós-Traumáticos/terapia , Transtornos de Estresse Pós-Traumáticos/psicologia , Resultado do Tratamento
13.
Psychotherapy (Chic) ; 61(1): 44-54, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37917810

RESUMO

Alexithymia is the inability to identify and recognize emotions. The present study examined the impact of alexithymia on prolonged exposure (PE) therapy. Participants (n = 68) with PTSD underwent 10 PE sessions. Alexithymia was assessed via the Toronto Alexithymia Scale (TAS-20) and the emotional clarity and awareness subscales of the Difficulties in Emotion Regulation Scale. Treatment outcomes were assessed via the PTSD checklist and Clinician-Administered PTSD Scale for the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition at posttreatment and 6-month follow-up. Those with high alexithymia were more likely to endorse experiencing a full PTSD diagnosis immediately posttreatment, χ²(1) = 12.53, p = .002, and at 6-month follow-up, χ²(1) = 11.21, p = .004. Alexithymia was associated with delayed treatment effects on avoidance, with a significant reduction in symptomology observed from pre- to follow-up, t(51) = 4.52, p < .001, and not from pre- to posttreatment. Although both the low and high alexithymia groups showed significant changes in negative changes in thinking and mood, F(2, 14) = 9.18, p = .001, d = 1.57 and F(2, 50) = 13.86, p = .001, d = 1.49, respectively, the high alexithymia group exhibited a marginally lesser magnitude of treatment effect. Although those with significantly greater difficulties with emotional clarity were more likely to drop out of PE treatment, emotional clarity and awareness did not moderate treatment response. Our results confirm the efficacy of PE but also highlight that those with alexithymia show a delayed treatment response and may be at greater risk of pathology after treatment. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Sintomas Afetivos , Terapia Implosiva , Humanos , Sintomas Afetivos/terapia , Sintomas Afetivos/psicologia , Emoções/fisiologia , Afeto/fisiologia , Resultado do Tratamento
14.
J Anxiety Disord ; 101: 102805, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38113781

RESUMO

OBJECTIVE: To explore predictors and moderators of clinical worsening during a double-blind trial in which patients with obsessive-compulsive disorder (OCD) were randomized to either continue or discontinue their Serotonin Reuptake Inhibitor (SRI) medication after achieving wellness from the addition of exposure and response prevention (EX/RP) therapy. METHOD: The data came from a double-blind discontinuation trial that included N = 101 participants, 35 of whom were removed from the study due to clinical worsening. We first used LASSO logistic regression to identify which of the 34 potential baseline variables of interest (including demographics, diagnoses, other relevant clinical constructs, and specific genotypes), might moderate or predict this clinical worsening. Then logistic regression was used to examine which of these identified variables were significantly related to later clinical worsening. We verified the validity of our final prediction model using k-fold cross-validation. RESULTS: There was one significant predictor of clinical worsening: In both groups, those with more past diagnoses had a greater likelihood of clinical worsening (p = .015). There were several moderators. Rates of clinical worsening were higher in the Discontinuation group compared to the Continuation group for participants who were taking a shorter half-life SRI (p = .044), were female (p = .022), had higher baseline levels of maladaptive metacognitions (p < .001), had fewer sleep problems at baseline (p = .001), and/or had more years of education (p < .001). CONCLUSIONS: Our results identified several factors that may predict the development of clinical worsening in OCD patients discontinuing SRI medication following successful EX/RP treatment.


Assuntos
Terapia Implosiva , Transtorno Obsessivo-Compulsivo , Humanos , Feminino , Masculino , Inibidores Seletivos de Recaptação de Serotonina/uso terapêutico , Transtorno Obsessivo-Compulsivo/tratamento farmacológico , Terapia Implosiva/métodos , Resultado do Tratamento
15.
Behav Brain Res ; 458: 114741, 2024 02 26.
Artigo em Inglês | MEDLINE | ID: mdl-37931704

RESUMO

Extinction of conditioned fear is considered a fundamental process in the recovery from posttraumatic stress disorder and anxiety disorders. Sleep, especially rapid-eye-movement (REM) sleep, has been implicated in promoting extinction memory. The orexin system contributes to the regulation of sleep and wakefulness and emotional behaviors. In rodents, administrations of an orexin receptor antagonist following fear extinction training enhanced consolidation of extinction memory. Although orexin antagonists increase sleep, including REM sleep, the possible contribution of sleep to the effects of orexin antagonists on extinction memory has not been examined. Therefore, this study examined the effects of suvorexant, a dual orexin receptor antagonist, on extinction memory and sleep and their associations in mice. C57BL/6 mice underwent sleep recording for 24 h before and after contextual fear conditioning with footshocks and extinction learning during the early light phase or early dark phase. Mice were systemically injected with either 25 mg/kg of suvorexant or vehicle immediately after the extinction session. We found that suvorexant neither altered sleep nor improved extinction memory recall compared with vehicle. The higher percentages of REM sleep during the post-extinction dark phase were associated with lower extinction memory recall and greater freezing responses to the fear context. Results also indicate that animals did not reach complete extinction of fear with the fear extinction training protocol used in this study. These findings suggest that promoting REM sleep may not enhance fear extinction memory when extinction of fear is incomplete.


Assuntos
Terapia Implosiva , Antagonistas dos Receptores de Orexina , Camundongos , Animais , Antagonistas dos Receptores de Orexina/farmacologia , Orexinas , Extinção Psicológica/fisiologia , Medo/fisiologia , Camundongos Endogâmicos C57BL , Sono/fisiologia
16.
J Behav Ther Exp Psychiatry ; 83: 101938, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38113806

RESUMO

BACKGROUND AND OBJECTIVES: Research that used counterconditioning (CC) to reduce women's negative body image has led to mixed results. One explanation could be that the negative responses elicited by own body pictures hinder the effectiveness of CC procedures in adjusting overly negative attitudes towards the own body. In this study we therefore tried to prevent the impact of negative responses by limiting women's perceptual awareness of the own body pictures during the CC procedure. METHODS: Women with a negative body image were randomly assigned to an experimental (n = 75) or control (n = 71) condition. In the experimental condition, participants' masked body pictures were systematically followed by visible social approval cues (i.e., smiling faces), whereas neutral body-unrelated control pictures were followed by a blank screen. In the control condition, both own body and control pictures were followed by a blank screen. RESULTS: Participants in the experimental condition did not report a more positive evaluation of the own body (pictures) after CC than participants in the control condition. Also, the strength of automatic affective body evaluations as indexed by a single-target Implicit Association Test did not differ between conditions. LIMITATIONS: Many participants did not remain fully unaware of their body pictures during conditioning. CONCLUSIONS: The findings provided no support for the idea that CC with masked own body pictures can be used in women with body dissatisfaction to improve their body image.


Assuntos
Insatisfação Corporal , Terapia Implosiva , Humanos , Feminino , Imagem Corporal/psicologia , Sinais (Psicologia) , Sorriso
17.
BMC Psychiatry ; 23(1): 951, 2023 12 18.
Artigo em Inglês | MEDLINE | ID: mdl-38110900

RESUMO

BACKGROUND: Cue exposure therapy is used to treat alcohol dependence. However, its effectiveness is controversial due to the limitations of the clinical treatment setting. Virtual reality technology may improve the therapeutic effect. The aim of this study is to explore whether virtual reality-based cue exposure therapy can reduce the psychological craving and physiological responses of patients with alcohol dependence. METHODS: Forty-four male alcohol-dependent patients were recruited and divided into the study group (n = 23) and the control group (n = 21) according to a random number table. The control group received only conventional clinical treatment for alcohol dependence. The study group received conventional clinical treatment with the addition of VR cue exposure (treatment). The primary outcome was to assess psychological craving and physiological responses to cues of patients before and after treatment. RESULTS: After virtual reality-based cue exposure therapy, the changes in VAS and heart rate before and after cue exposure in the study group were significantly lower than those in the control group (P < 0.05), while the changes in skin conductance and respiration between the study group and the control group were not significantly different (P > 0.05). The changes in VAS and heart rate before and after cue exposure in the study group were significantly lower than those before treatment (P < 0.05), while the changes in skin conductance and respiration were not significantly different from those before treatment (P > 0.05). The changes in VAS, heart rate, skin conductance and respiration before and after cue exposure in the control group were not significantly different from those before treatment (P > 0.05). CONCLUSION: Virtual reality-based cue exposure therapy can reduce the psychological craving and part of the physiological responses of alcohol-dependent patients during cue exposure in the short term and may be helpful in the treatment of alcohol dependence. TRIAL REGISTRATION: The study protocol was registered at the China Clinical Trial Registry on 26/02/2021 ( www.chictr.org.cn ; ChiCTR ID: ChiCTR2100043680).


Assuntos
Alcoolismo , Terapia Implosiva , Realidade Virtual , Humanos , Masculino , Fissura/fisiologia , Alcoolismo/terapia , Sinais (Psicologia) , Etanol
18.
J Anxiety Disord ; 100: 102794, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37980801

RESUMO

Posttraumatic stress disorder (PTSD) has high comorbidity with other psychiatric conditions, including depression, generalized anxiety, and suicidality. Evidence-based treatments (EBTs) for PTSD are effective at reducing PTSD symptoms. However, evidence on the impact of PTSD EBTs on comorbid conditions is mixed and often uses pre-post analyses, which disregards PTSD symptom response. This study replicated and extended prior work on benchmarking quality of life to PTSD symptom response to a broader range of secondary outcomes using a research-based metric of clinically meaningful PTSD symptom change. Ninety-five active duty military members seeking treatment for PTSD participated in a randomized noninferiority trial examining two cognitive behavioral therapies for PTSD: Written Exposure Therapy and Cognitive Processing Therapy. Participants completed clinician-administered and self-rating assessments at baseline and 10 weeks post-first treatment session and were classified as PTSD treatment responders or nonresponders. Data were analyzed using generalized linear mixed effects models with repeated measures with fixed effects of time and PTSD symptom response category. PTSD treatment responders experienced significant improvements in secondary outcomes; nonresponders demonstrated statistically significant, but not clinically meaningful, comorbid symptom change. Our findings provide evidence that successfully treating PTSD symptoms may also positively impact psychiatric comorbidity.


Assuntos
Terapia Implosiva , Transtornos de Estresse Pós-Traumáticos , Humanos , Benchmarking , Cognição , Qualidade de Vida , Transtornos de Estresse Pós-Traumáticos/terapia , Transtornos de Estresse Pós-Traumáticos/psicologia
19.
Behav Res Ther ; 171: 104436, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37979218

RESUMO

BACKGROUND: Positive valence emotions serve functions that may facilitate response to exposure therapy - they encourage approach behavior, diminish perceived threat reactivity, and enhance assimilation of new information in memory. Few studies have examined whether positive emotions predict exposure therapy success and extant findings are mixed. METHODS: We conducted a secondary analysis of an exposure therapy trial for social anxiety disorder to test the hypothesis that patients endorsing higher trait positive emotions at baseline would display the greatest treatment response. N = 152 participants enrolled in a randomized controlled trial of d-cycloserine augmentation completed five sessions of group exposure therapy. Pre-treatment positive emotionality was assessed using the NEO Five-Factor Inventory. Social anxiety symptoms were assessed throughout treatment by blinded evaluators using the Liebowitz Social Anxiety Scale. RESULTS: Accounting for baseline symptom severity, multilevel growth curve models revealed that patients with higher pre-treatment positive emotionality displayed faster social anxiety symptom reductions and lower scores at 3-month follow-up. This predictive effect remained significant after controlling for baseline depression and extraversion (without the positive emotionality facet). CONCLUSIONS: These findings add to emerging evidence suggesting that explicitly targeting and enhancing positive emotions during exposure to perceived threat may improve treatment outcomes for anxiety and fear-based disorders. TRIAL REGISTRATION: ClinicalTrials.gov: NCT02066792https://clinicaltrials.gov/ct2/show/NCT02066792.


Assuntos
Terapia Implosiva , Fobia Social , Humanos , Fobia Social/terapia , Transtornos de Ansiedade/psicologia , Medo/psicologia , Ansiedade , Resultado do Tratamento
20.
J Consult Clin Psychol ; 91(12): 681-682, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38032619

RESUMO

For some time, the gold standard treatment for anxiety disorders has been exposure therapy, defined as the repeated approach of anxiety-inducing situations, memories, or physiological sensations. Existing treatments to target fear and avoidance of pain can be augmented by innovations from exposure research in the anxiety disorders, including greater emphasis on safety learning, the utilization of imaginal exposure to catastrophic fears, and exposure to contrasting emotions. Given that treatments to target core, maintaining mechanisms of anxiety, including imaginal exposures, can be administered as self-directed treatments without therapist involvement, they represent important avenues for ensuring the millions of people with chronic musculosketal pain can gain access to psychosocial treatment and reduce the interference of pain in their lives. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Assuntos
Dor Crônica , Terapia Implosiva , Dor Musculoesquelética , Humanos , Dor Musculoesquelética/terapia , Dor Crônica/terapia , Ansiedade , Transtornos de Ansiedade
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