scholarly journals Psychedelic Therapy's Transdiagnostic Effects: A Research Domain Criteria (RDoC) Perspective

2021 ◽  
Vol 12 ◽  
Author(s):  
John R. Kelly ◽  
Claire M. Gillan ◽  
Jack Prenderville ◽  
Clare Kelly ◽  
Andrew Harkin ◽  
...  
Keyword(s):  
Clinical Evidence ◽  
Therapeutic Potential ◽  
Therapeutic Effects ◽  
Research Domain Criteria ◽  
Post Traumatic Stress ◽  
Obsessive Compulsive ◽  
Transdiagnostic Treatment ◽  
Compulsive Disorder ◽  
Positive Valence ◽  
Research Domain

Accumulating clinical evidence shows that psychedelic therapy, by synergistically combining psychopharmacology and psychological support, offers a promising transdiagnostic treatment strategy for a range of disorders with restricted and/or maladaptive habitual patterns of emotion, cognition and behavior, notably, depression (MDD), treatment resistant depression (TRD) and addiction disorders, but perhaps also anxiety disorders, obsessive-compulsive disorder (OCD), Post-Traumatic Stress Disorder (PTSD) and eating disorders. Despite the emergent transdiagnostic evidence, the specific clinical dimensions that psychedelics are efficacious for, and associated underlying neurobiological pathways, remain to be well-characterized. To this end, this review focuses on pre-clinical and clinical evidence of the acute and sustained therapeutic potential of psychedelic therapy in the context of a transdiagnostic dimensional systems framework. Focusing on the Research Domain Criteria (RDoC) as a template, we will describe the multimodal mechanisms underlying the transdiagnostic therapeutic effects of psychedelic therapy, traversing molecular, cellular and network levels. These levels will be mapped to the RDoC constructs of negative and positive valence systems, arousal regulation, social processing, cognitive and sensorimotor systems. In summarizing this literature and framing it transdiagnostically, we hope we can assist the field in moving toward a mechanistic understanding of how psychedelics work for patients and eventually toward a precise-personalized psychedelic therapy paradigm.

TMS in the study and treatment of anxiety disorders

2012 ◽  
Author(s):  
Benjamin Greenberg ◽  
Sarah H. Lisanby
Keyword(s):  
Anxiety Disorder ◽  
Anxiety Disorders ◽  
Therapeutic Effects ◽  
Post Traumatic Stress ◽  
Obsessive Compulsive ◽  
Systematic Testing ◽  
Compulsive Disorder ◽  
Current State ◽  
Post Traumatic ◽  
Disorder Treatment

A few studies of transcranial magnetic stimulation (TMS) as an anxiety disorder treatment have been reported. In treatment studies, the focal application of TMS in the treatment of anxiety disorders has been guided by the present understanding of the neurocircuitry underlying these disorders. This article reviews the current state of the literature on the uses of TMS in the study and treatment of anxiety disorders, and discusses the implications for understanding their patho-etiology. Investigation of the possible therapeutic effects of repetitive TMS in obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), or any anxiety disorder remains at a preliminary stage. There have been promising initial observations in OCD, which require systematic testing in controlled studies. As far as PTSD is concerned, the available data suggest that additional TMS work is required. The observations need to be replicated in controlled settings to determine whether this approach will have value in treating anxiety disorders.

scholarly journals A transdiagnostic perspective of constructs underlying obsessive-compulsive and related disorders: An international Delphi consensus study

2020 ◽  
Vol 54 (7) ◽  
pp. 719-731
Author(s):  
Leonardo F Fontenelle ◽  
Erin Oldenhof ◽  
Maria Eduarda Moreira-de-Oliveira ◽  
Jonathan S Abramowitz ◽  
Martin M Antony ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Performance Monitoring ◽  
Response Selection ◽  
Future Research ◽  
System Response ◽  
Research Domain Criteria ◽  
Delphi Consensus ◽  
Obsessive Compulsive ◽  
Positive Valence ◽  
Research Domain

Background: The Research Domain Criteria seeks to bridge knowledge from neuroscience with clinical practice by promoting research into valid neurocognitive phenotypes and dimensions, irrespective of symptoms and diagnoses as currently conceptualized. While the Research Domain Criteria offers a vision of future research and practice, its 39 functional constructs need refinement to better target new phenotyping efforts. This study aimed to determine which Research Domain Criteria constructs are most relevant to understanding obsessive-compulsive and related disorders, based on a consensus between experts in the field of obsessive-compulsive and related disorders. Methods: Based on a modified Delphi method, 46 experts were recruited from Australia, Africa, Asia, Europe and the Americas. Over three rounds, experts had the opportunity to review their opinion in light of feedback from the previous round, which included how their response compared to other experts and a summary of comments given. Results: Thirty-four experts completed round one, of whom 28 (82%) completed round two and 24 (71%) completed round three. At the final round, four constructs were endorsed by ⩾75% of experts as ‘primary constructs’ and therefore central to understanding obsessive-compulsive and related disorders. Of these constructs, one came from the Positive Valence System (Habit), two from the Cognitive Control System (Response Selection/Inhibition and Performance Monitoring) and the final construct was an additional item suggested by experts (Compulsivity). Conclusion: This study identified four Research Domain Criteria constructs that, according to experts, cut across different obsessive-compulsive and related disorders. These constructs represent key areas for future investigation, and may have potential implications for clinical practice in terms of diagnostic processes and therapeutic management of obsessive-compulsive and related disorders.

Trauma and mood disorders: comorbidity with post-traumatic stress disorder or overlapping symptoms?

2016 ◽  
Vol Ano 6 ◽  
pp. 38-42
Author(s):  
Andrea Feijó Mello ◽  
Euthymia B. Almeida Prado
Keyword(s):  
Mood Disorders ◽  
Post Traumatic Stress Disorder ◽  
Traumatic Stress ◽  
Stress Disorder ◽  
Research Domain Criteria ◽  
Post Traumatic Stress ◽  
Post Traumatic ◽  
Research Domain

O presente artigo discorre sobre a comorbidade entre transtorno bipolar (TB) e transtorno de estresse póstraumático (TEPT) e questiona sobre certos casos serem melhor avaliados à luz das novas teorias do Research Domain Criteria (RDoC), principalmente aqueles quadros de TEPT com sintomas disfóricos que podem ser classificados como TB, apesar de não preencherem critérios para tal. Nesse caso, questiona-se a comorbidade e propõe-se um aprofundamento da fisiopatologia dessa sintomatologia que está sobreposta. Clinicamente, esse olhar poderá facilitar o manejo farmacológico de pacientes graves com histórico de trauma.

Positive Mood States and Gambling Disorder

2019 ◽  
pp. 366-379
Author(s):  
Sarah W. Yip ◽  
Zu Wei Zhai ◽  
Iris M. Balodis ◽  
Marc N. Potenza
Keyword(s):  
Impulse Control ◽  
Gambling Disorder ◽  
Adult Population ◽  
Approach Motivation ◽  
Gambling Problems ◽  
Research Domain Criteria ◽  
Monetary Rewards ◽  
Neuroimaging Data ◽  
Positive Valence ◽  
Research Domain

Gambling problems are experienced by about 1% of the adult population, with higher estimates reported in adolescents. Both positive and negative motivations for gambling exist and may contribute to gambling problems. Positive valence disturbances involving how people process rewards, including monetary rewards relevant to gambling, have been reported in gambling disorder and have been associated with the disorder and clinically relevant measures relating to impaired impulse control. Positive valence systems as they relate to gambling disorder and clinically relevant features thereof are considered in this chapter. Findings from neuroimaging data related to the positive valence system constructs of approach motivation, initial and sustained/longer term responsiveness to reward, habit and reward learning are reviewed. Possible interactions between positive valence systems and other Research Domain Criteria (RDoC) systems are also discussed within the context of gambling disorder, as is how the application of an RDoC framework can be used to further understanding of gambling disorder.

scholarly journals Likely Exacerbation of Psychological Disorders from Covid-19 Response

2021 ◽  
Vol 12 ◽  
pp. 215013272110167
Author(s):  
Tara Rava Zolnikov ◽  
Tanya Clark ◽  
Tessa Zolnikov
Keyword(s):  
Psychological Disorders ◽  
Emotional Reactions ◽  
Post Traumatic Stress ◽  
Obsessive Compulsive ◽  
Compulsive Disorder ◽  
Current State ◽  
The Face ◽  
Adults And Children ◽  
Post Traumatic ◽  
Anxiety Depression

Anxiety and fear felt by people around the world regarding the coronavirus pandemic is real and can be overwhelming, resulting in strong emotional reactions in adults and children. With depressive and anxiety disorders already highly prevalent in the general population (300 million worldwide), depression and/or anxiety specifically because of the pandemic response is likely. Moreover, the current state of panic in the face of uncertainty is apt to produce significant amounts of stress. While this situation has the potential to cause psychological disorders in previously unaffected populations, perhaps more impactful is the exacerbation of symptoms of many existing disorders including anxiety, depression, post-traumatic stress disorder (PTSD), obsessive-compulsive disorder (OCD) and hoarding disorder.

Obsessive—Compulsive Disorder as a 5-HT Subsystem-Related Behavioural Disorder

1989 ◽  
Vol 155 (S8) ◽  
pp. 15-24 ◽  
Author(s):  
D. L. Murphy ◽  
J. Zohar ◽  
C. Benkelfat ◽  
M. T. Pato ◽  
T. A. Pigott ◽  
...  
Keyword(s):  
Obsessive Compulsive Disorder ◽  
Serotonin Uptake ◽  
Selective Serotonin ◽  
Therapeutic Effects ◽  
Obsessive Compulsive ◽  
Neurotransmitter System ◽  
Compulsive Disorder ◽  
Uptake Inhibitors ◽  
Anxiety Depression ◽  
Abnormal Brain

Involvement of the brain serotonin (5-HT) neurotransmitter system in obsessive-compulsive disorder (OCD) was originally suggested on the basis of therapeutic effects found with the semi-selective serotonin uptake inhibitor, clomipramine. More recent studies directly comparing clomipramine with non-selective or norepinephrine-selective uptake inhibitors, such as desipramine or nortriptyline, as well as studies with new, more selective serotonin uptake inhibitors, including fluvoxamine and fluoxetine, have supported that hypothesis. Clomipramine's antiobsessional effect has been augmented with the serotonin precursor, L-tryptophan, or with lithium, which has prominent serotonergic effects. Patients whose OCD symptoms improved on clomipramine worsened when the drug was discontinued (regardless of duration of therapy) and improved when clomipramine was reinstituted. OCD symptoms also worsened when metergoline, a 5-HT antagonist, was given to patients who had improved with clomipramine. Metergoline given alone had no effect. Administration of m-chlorophenylpiperazine (m-CPP), a 5-HT receptor agonist, to untreated OCD patients increased their anxiety, depression, and dysphoria, and exacerbated their OC symptoms. After 4 months of clomipramine therapy, m-CPP failed to produce the same behavioural effects, suggesting an alteration of a 5-HT subsystem (possibly downregulation of some 5-HT receptors). The data reviewed suggest an important role for an abnormal brain 5-HT subsystem in patients with OCD.

scholarly journals Using physiological signals to predict temporal defense responses: a multi-modality analysis

2020 ◽  
Author(s):  
Tae-jun Choi ◽  
Honggu Lee
Keyword(s):  
Defense Response ◽  
Defense Responses ◽  
Physiological Signals ◽  
Classification Model ◽  
Post Traumatic Stress ◽  
Obsessive Compulsive ◽  
Compulsive Disorder ◽  
Novel Approach ◽  
Data Driven Approach ◽  
Response Classification

AbstractDefense responses are a highly conserved behavioral response set across species. Defense responses motivate organisms to detect and react to threats and potential danger as a precursor to anxiety. Accurate measurement of temporal defense responses is important for understanding clinical anxiety and mood disorders, such as post-traumatic stress disorder, obsessive compulsive disorder, and generalized anxiety disorder. Within these conditions, anxiety is defined as a state of prolonged defense response elicitation to a threat that is ambiguous or unspecific. In this study, we aimed to develop a data-driven approach to capture temporal defense response elicitation through a multi-modality data analysis of physiological signals, including electroencephalogram (EEG), electrocardiogram (ECG), and eye-tracking information. A fear conditioning paradigm was adopted to develop a defense response classification model. From a classification model based on 42 feature sets, a higher order crossing feature set-based model was chosen for further analysis with cross-validation loss of 0.0462 (SEM: 0.0077). To validate our model, we compared predicted defense response occurrence ratios from a comprehensive situation that generates defense responses by watching movie clips with fear awareness and threat existence predictability, which have been reported to correlate with defense response elicitation in previous studies. We observed that defense response occurrence ratios are correlated with threat existence predictability, but not with fear awareness. These results are similar to those of previous studies using comprehensive situations. Our study provides insight into measurement of temporal defense responses via a novel approach, which can improve understanding of anxiety and related clinical disorders for neurobiological and clinical researchers.

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