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Sousa MM, Costa AD, Almeida C, Soriano-Mas C, Silva Moreira P, Morgado P. Symptom provocation in obsessive-compulsive disorder: Validation of the Braga Obsessive Compulsive image set (BOCIS). J Psychiatr Res 2024; 175:144-152. [PMID: 38733929 DOI: 10.1016/j.jpsychires.2024.04.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/15/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024]
Abstract
Symptom provocation paradigms are paramount to understand a heterogeneous disorder as obsessive-compulsive disorder (OCD). The main aim of our work was to develop and validate an open-access set of OCD-related images comprising three main subtypes: washing, checking, and symmetry. Twenty-six OCD patients and 25 controls provided valence and arousal ratings for a set of OCD-related, aversive, and neutral images. Linear mixed model analyses were used to estimate the main effects of group, image category, and group-image category interaction in image ratings. All main effects were found to be significant for both arousal and valence ratings, except for the group in arousal ratings. Path analysis confirmed our hypothesis that the OCI-R subscales influenced the subjective ratings of the corresponding image categories, particularly among patients. Independent samples t-tests were performed for each OCD picture to compose the set. Arousal demonstrated a greater capacity to distinguish controls and patients, thus sustaining our choice of using these ratings for the final Braga Obsessive-Compulsive Image Set (BOCIS). Our study demonstrated that the stimuli of the BOCIS reliably portray OCD-like triggers for washing, checking and symmetry subtypes. Its open-access availability will facilitate significant progress in both clinical and research settings.
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Affiliation(s)
- Mafalda Machado Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães, Portugal; Clinical Academic Center-Braga (2CA), Braga, Portugal.
| | - Ana Daniela Costa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães, Portugal; Clinical Academic Center-Braga (2CA), Braga, Portugal
| | | | - Carles Soriano-Mas
- Department of Social Psychology and Quantitative Psychology, Institude of Neurosciences, Universitat de Barcelona, Spain; Department of Psychiatry, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Carlos III Health Institute, Madrid, Spain
| | - Pedro Silva Moreira
- Psychology Research Centre, School of Psychology, University of Minho, Braga, Portugal
| | - Pedro Morgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães, Portugal; Clinical Academic Center-Braga (2CA), Braga, Portugal
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Biria M, Banca P, Keser E, Healy MP, Sawiak SJ, Frota Lisbôa Pereira de Souza AM, Marzuki AA, Sule A, Robbins TW. Excessive Checking in Obsessive-Compulsive Disorder: Neurochemical Correlates Revealed by 7T Magnetic Resonance Spectroscopy. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2024; 4:363-373. [PMID: 38298778 PMCID: PMC10829650 DOI: 10.1016/j.bpsgos.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 02/02/2024] Open
Abstract
Background Compulsive checking, a common symptom of obsessive-compulsive disorder (OCD), has been difficult to capture experimentally. Therefore, determination of its neural basis remains challenging despite some evidence suggesting that it is linked to dysfunction of cingulostriatal systems. This study introduces a novel experimental paradigm to measure excessive checking and its neurochemical correlates. Methods Thirty-one patients with OCD and 29 healthy volunteers performed a decision-making task requiring them to decide whether 2 perceptually similar visual representations were the same or different under a high-uncertainty condition without feedback. Both groups underwent 7T magnetic resonance spectroscopy scans on the same day. Correlations between out-of-scanner experimental measures of checking and the glutamate/GABA (gamma-aminobutyric acid) ratio in the anterior cingulate cortex, supplementary motor area, and occipital cortex were assessed. Their relationship with subjective ratings of doubt, anxiety, and confidence was also investigated. Results Patients with OCD exhibited excessive and dysfunctional checking, which was significantly correlated with changes in the glutamate/GABA ratio within the anterior cingulate cortex. No behavioral/neurochemical relationships were evident for either the supplementary motor area or occipital cortex. The excessive checking observed in patients was negatively correlated with their confidence levels and positively related to doubt, anxiety, and compulsivity traits. Conclusions We conclude that experimental measures of excessive and dysfunctional checking in OCD, which have been linked to increased doubt, anxiety, and lack of confidence, are related to an imbalance between excitatory and inhibitory neural activity within the anterior cingulate cortex. This study adds to our understanding of the role of this region in OCD by providing a laboratory model of the possible development of compulsive checking.
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Affiliation(s)
- Marjan Biria
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
- Division of Psychiatry and Division of Psychology and Language Sciences, University College London, London, United Kingdom
| | - Paula Banca
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
| | - Engin Keser
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
| | - Máiréad P. Healy
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
| | - Stephen J. Sawiak
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
- Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Ana Maria Frota Lisbôa Pereira de Souza
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
| | - Aleya A. Marzuki
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
- Department of Psychology, School of Medical and Life Sciences, Sunway University, Selangor, Malaysia
| | - Akeem Sule
- Department of Psychiatry, School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Trevor W. Robbins
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
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Jaspers-Fayer F, Lin SY, Chan E, Ellwyn R, Lim R, Best J, Belschner L, Lang D, Heran MKM, Woodward TS, Stewart SE. Neural correlates of symptom provocation in pediatric obsessive-compulsive disorder. NEUROIMAGE-CLINICAL 2019; 24:102034. [PMID: 31734533 PMCID: PMC6861668 DOI: 10.1016/j.nicl.2019.102034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 08/30/2019] [Accepted: 09/27/2019] [Indexed: 12/31/2022]
Abstract
Largest controlled pediatric OCD symptom provocation study. Novel standardized symptom provocation picture set for pediatric OCD. Behavioral group differences strongest for ‘Just Right’ factor. Temporal pole recruited by OCD group.
Obsessive-compulsive disorder (OCD)-affected adults and children exhibit three to four symptom dimensions with distinct but overlapping neural correlates. No symptom provocation behavioural or imaging study has examined all symptom dimensions in a pediatric OCD sample. Method Clinically diagnosed pediatric OCD-affected participants (n = 25) as well as age, gender and Tanner pubertal stage-matched healthy controls (HCs; n = 24) (total sample: mean age = 14.77 ± 2.93 years; age range = 9–18 years; 35% male) viewed alternating blocks of OCD symptom provocation (Contamination, Bad Thoughts, and Just Right symptom dimensions), Fear, Neutral and Rest (i.e. fixation) conditions during functional magnetic resonance imaging. A region-of-interest analysis used seeds based upon results of an adult OCD meta-analysis Results OCD participants found OCD symptom-related stimuli bothersome, particularly when compared to controls in the “Just Right” symptom dimension. Pediatric OCD patients exhibited greater recruitment of the left superior temporal gyrus (STG) than healthy controls during combined symptom provocation versus neutral conditions. Conclusion Findings suggest involvement of the temporal poles rather than in classic cortico-striatal-thalamico-cortical circuits in pediatric OCD during symptom provocation.
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Affiliation(s)
- Fern Jaspers-Fayer
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - Sarah Yao Lin
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - Elaine Chan
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - Rhonda Ellwyn
- British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - Ryan Lim
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - John Best
- British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - Laura Belschner
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - Donna Lang
- British Columbia Children's Hospital Research Institute, Vancouver, Canada; Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Manraj K M Heran
- Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Todd S Woodward
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada
| | - S Evelyn Stewart
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada; British Columbia Children's Hospital Research Institute, Vancouver, Canada; Provincial Health Services Authority, British Columbia Children's Hospital, Vancouver, Canada.
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