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Briken P, Bőthe B, Carvalho J, Coleman E, Giraldi A, Kraus SW, Lew-Starowicz M, Pfaus JG. Assessment and treatment of compulsive sexual behavior disorder: a sexual medicine perspective. Sex Med Rev 2024:qeae014. [PMID: 38529667 DOI: 10.1093/sxmrev/qeae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 02/02/2024] [Accepted: 02/03/2024] [Indexed: 03/27/2024]
Abstract
INTRODUCTION The addition of compulsive sexual behavior disorder (CSBD) into the ICD-11 chapter on mental, behavioral, or neurodevelopmental disorders has greatly stimulated research and controversy around compulsive sexual behavior, or what has been termed "hypersexual disorder," "sexual addiction," "porn addiction," "sexual compulsivity," and "out-of-control sexual behavior." OBJECTIVES To identify where concerns exist from the perspective of sexual medicine and what can be done to resolve them. METHODS A scientific review committee convened by the International Society for Sexual Medicine reviewed pertinent literature and discussed clinical research and experience related to CSBD diagnoses and misdiagnoses, pathologizing nonheteronormative sexual behavior, basic research on potential underlying causes of CSBD, its relationship to paraphilic disorder, and its potential sexual health consequences. The panel used a modified Delphi method to reach consensus on these issues. RESULTS CSBD was differentiated from other sexual activity on the basis of the ICD-11 diagnostic criteria, and issues regarding sexual medicine and sexual health were identified. Concerns were raised about self-labeling processes, attitudes hostile to sexual pleasure, pathologizing of nonheteronormative sexual behavior and high sexual desire, mixing of normative attitudes with clinical distress, and the belief that masturbation and pornography use represent "unhealthy" sexual behavior. A guide to CSBD case formulation and care/treatment recommendations was proposed. CONCLUSIONS Clinical sexologic and sexual medicine expertise for the diagnosis and treatment of CSBD in the psychiatric-psychotherapeutic context is imperative to differentiate and understand the determinants and impact of CSBD and related "out-of-control sexual behaviors" on mental and sexual well-being, to detect forensically relevant and nonrelevant forms, and to refine best practices in care and treatment. Evidence-based, sexual medicine-informed therapies should be offered to achieve a positive and respectful approach to sexuality and the possibility of having pleasurable and safe sexual experiences.
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Affiliation(s)
- Peer Briken
- Institute for Sex Research, Sexual Medicine, and Forensic Psychiatry, University Medical Center, Hamburg-Eppendorf, Hamburg 20251, Germany
| | - Beáta Bőthe
- Department of Psychology, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Centre de Recherche Interdisciplinaire Sur Les Problèmes Conjugaux Et Les Agressions Sexuelles, Montréal, QC H3C 3J7, Canada
| | - Joana Carvalho
- William James Center for Research, Department of Education and Psychology, University of Aveiro, Aveiro 3810-193, Portugal
| | - Eli Coleman
- Eli Coleman Institute for Sexual and Gender Health, University of Minnesota, Minneapolis, MN 55454, United States
| | - Annamaria Giraldi
- Sexological Clinic, Mental Health Center, Copenhagen University Hospital, Mental Health Services, Copenhagen CPH 2200, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Shane W Kraus
- Department of Psychology, University of Nevada Las Vegas, Las Vegas, NV 5030, United States
| | - Michał Lew-Starowicz
- Department of Psychiatry, Centre of Postgraduate Medical Education, Warsaw 01-809, Poland
| | - James G Pfaus
- Center for Sexual Health and Intervention, Czech National Institute of Mental Health, Klecany 25067, Czech Republic
- Department of Psychology and Life Sciences, Faculty of Humanities, Charles University, Prague 18200, Czech Republic
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Martín-González E, Prados-Pardo Á, Sawiak SJ, Dalley JW, Padro D, Ramos-Cabrer P, Mora S, Moreno-Montoya M. Mapping the neuroanatomical abnormalities in a phenotype of male compulsive rats. BEHAVIORAL AND BRAIN FUNCTIONS : BBF 2023; 19:19. [PMID: 37932782 PMCID: PMC10626819 DOI: 10.1186/s12993-023-00221-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 10/28/2023] [Indexed: 11/08/2023]
Abstract
Compulsivity is considered a transdiagnostic dimension in obsessive-compulsive and related disorders, characterized by heterogeneous cognitive and behavioral phenotypes associated with abnormalities in cortico-striatal-thalamic-cortical circuitry. The present study investigated the structural morphology of white and gray matter in rats selected for low- (LD) and high- (HD) compulsive drinking behavior on a schedule-induced polydipsia (SIP) task. Regional brain morphology was assessed using ex-vivo high-resolution magnetic resonance imaging (MRI). Voxel-based morphometry of segmented MRI images revealed larger white matter volumes in anterior commissure and corpus callosum of HD rats compared with LD rats. HD rats also showed significantly larger regional volumes of dorsolateral orbitofrontal cortex, striatum, amygdala, hippocampus, midbrain, sub-thalamic nucleus, and cerebellum. By contrast, the medial prefrontal cortex was significantly smaller in HD rats compared with LD rats with no significant group differences in whole brain, ventricular, or cerebrospinal fluid volumes. These findings show that limbic cortico-basal ganglia structures implicated in impulse control disorders are distinct in rats that are vulnerable to develop compulsive behavior. Such abnormalities may be relevant to the etiology of compulsive disorders in humans.
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Affiliation(s)
- Elena Martín-González
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain
| | - Ángeles Prados-Pardo
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain
| | - Stephen J Sawiak
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Jeffrey W Dalley
- Department of Psychology, University of Cambridge, Cambridge, UK
- Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - Daniel Padro
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, Donostia-San Sebastián, Spain
| | - Pedro Ramos-Cabrer
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
| | - Santiago Mora
- Department of Neuroscience, University of Copenhagen Panum Institute, Copenhagen, Denmark
| | - Margarita Moreno-Montoya
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain.
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Turner D, Briken P, Grubbs J, Malandain L, Mestre-Bach G, Potenza MN, Thibaut F. The World Federation of Societies of Biological Psychiatry guidelines on the assessment and pharmacological treatment of compulsive sexual behaviour disorder. DIALOGUES IN CLINICAL NEUROSCIENCE 2022; 24:10-69. [PMID: 37522807 PMCID: PMC10408697 DOI: 10.1080/19585969.2022.2134739] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/18/2022] [Accepted: 10/03/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVES The current guidelines aim to evaluate the role of pharmacological agents in the treatment of patients with compulsive sexual behaviour disorder (CSBD). They are intended for use in clinical practice by clinicians who treat patients with CSBD. METHODS An extensive literature search was conducted using the English-language-literature indexed on PubMed and Google Scholar without time limit, supplemented by other sources, including published reviews. RESULTS Each treatment recommendation was evaluated with respect to the strength of evidence for its efficacy, safety, tolerability, and feasibility. Psychoeducation and psychotherapy are first-choice treatments and should always be conducted. The type of medication recommended depended mainly on the intensity of CSBD and comorbid sexual and psychiatric disorders. There are few randomised controlled trials. Although no medications carry formal indications for CSBD, selective-serotonin-reuptake-inhibitors and naltrexone currently constitute the most relevant pharmacological treatments for the treatment of CSBD. In cases of CSBD with comorbid paraphilic disorders, hormonal agents may be indicated, and one should refer to previously published guidelines on the treatment of adults with paraphilic disorders. Specific recommendations are also proposed in case of chemsex behaviour associated with CSBD. CONCLUSIONS An algorithm is proposed with different levels of treatment for different categories of patients with CSBD.
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Affiliation(s)
- Daniel Turner
- Department of Psychiatry and Psychotherapy, University Medical Center Mainz, Mainz, Germany
| | - Peer Briken
- Institute for Sex Research, Sexual Medicine, and Forensic Psychiatry, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joshua Grubbs
- Department of Psychology, Bowling Green State University, Bowling Green, OH, USA
| | - Leo Malandain
- Department of Psychiatry and Addictive Disorders, University Hospital Cochin (site Tarnier) AP-HP, Paris, France
| | - Gemma Mestre-Bach
- Facultad de Ciencias de la Salud, Universidad Internacional de La Rioja, La Rioja, Spain
| | - Marc N. Potenza
- Departments of Psychiatry and Neuroscience and Child Study Center, Yale School of Medicine, New Haven, CT, USA
- Connecticut Mental Health Center, New Haven, CT, USA
- Connecticut Council on Problem Gambling, Wethersfield, CT, USA
- Wu Tsai Institute, Yale University, New Haven, CT, USA
| | - Florence Thibaut
- Department of Psychiatry and Addictive Disorders, University Hospital Cochin (site Tarnier) AP-HP, Paris, France
- INSERM U1266, Institute of Psychiatry and Neurosciences, University of Paris Cité, Paris, France
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Draps M, Adamus S, Wierzba M, Gola M. Functional Connectivity in Compulsive Sexual Behavior Disorder - Systematic Review of Literature and Study on Heterosexual Males. J Sex Med 2022; 19:1463-1471. [PMID: 35831231 DOI: 10.1016/j.jsxm.2022.05.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Compulsive Sexual Behavior Disorder (CSBD) was recently included in ICD-11 as a new impulse control disorder. While this certainly improved the diagnosis of CSBD, the underlying brain mechanisms of the disorder are still poorly understood. Better description of brain functional deficits is required. AIM Here we investigate patterns of resting-state brain functional connectivity (fc) in a group of CSBD patients compared to a group of healthy controls (HC). METHODS A MATLAB toolbox named CONN functional connectivity toolbox was employed to study patterns of brain connectivity. Also correlation between fc and severity of CSBD symptoms and other psychological characteristics, assessed with questionnaires, were examined. OUTCOMES We collected resting-state functional magnetic resonance imaging data from 81 heterosexual males: 52 CSBD patients and 29 HC. RESULTS We found increased fc between left inferior frontal gyrus and right planum temporale and polare, right and left insula, right Supplementary Motor Cortex (SMA), right parietal operculum, and also between left supramarginal gyrus and right planum polare, and between left orbitofrontal cortex and left insula when compared CSBD and HC. The decreased fc was observed between left middle temporal gyrus and bilateral insula and right parietal operculum. No significant correlations between psychological questionnaires assessing CSBD symptoms and resting-state functional connectivity were observed. CLINICAL IMPLICATIONS Results from our study extend the knowledge of brain mechanisms differentiating CSBD from HC. STRENGTHS & LIMITATIONS The study was the first large sample study showing 5 distinct functional brain networks differentiating CSBD patients and HC. However, the sample was limited only to heterosexual men, in the future a greater diversity in studied sample and longitudinal studies are needed. Also, the present study examined functional connectivity at the level of regions of interest (ROIs). Future studies could verify these results by examining functional connectivity at the voxel level. CONCLUSION The identified functional brain networks differentiate CSBD from HC and provide some support for incentive sensitization as mechanism underlying CSBD symptoms. The correlation between psychological assessment (ie, severity of CSBD, depression and anxiety symptoms, level of impulsivity and compulsivity) and resting-state functional connectivity need further examination. Draps M, Adamus S, Wierzba M, et al. Functional Connectivity in Compulsive Sexual Behavior Disorder - Systematic Review of Literature and Study on Heterosexual Males. J Sex Med 2022;19:1463-1471.
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Affiliation(s)
- Małgorzata Draps
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland.
| | - Sylwia Adamus
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland; Faculty of Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Małgorzata Wierzba
- Laboratory of Brain Imaging, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Mateusz Gola
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland; Swartz Center for Computational Neuroscience, Institute for Neural Computations, University of California San Diego, San Diego, CA, USA
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Kondur HR, Lee TK, McIntosh R, Gouse H, Paul R, Grov C, Fuchs D, Gómez W, Dilworth SE, Neilands TB, Carrico AW. HIV-related drivers of sexual compulsivity and sexuality in sexual minority men who use methamphetamine. J Neurovirol 2022; 28:446-455. [PMID: 35821194 DOI: 10.1007/s13365-022-01085-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/22/2022] [Accepted: 06/14/2022] [Indexed: 10/17/2022]
Abstract
Although co-occurring methamphetamine (meth) use and HIV amplify the risk for neuropsychiatric comorbidities, the underlying neuroimmune mechanisms are not well characterized. We examined whether a detectable viral load and dysregulated metabolism of amino acid precursors for neurotransmitters predicted subsequent levels of sexual compulsivity and sexual sensation seeking. This 15-month longitudinal study enrolled 110 sexual minority men (SMM) living with HIV who had biologically confirmed meth use (i.e., reactive urine or hair toxicology results). Peripheral venous blood samples collected at baseline, 6 months, 12 months, and 15 months were used to measure a detectable viral load (> 40 copies/mL), the kynurenine/tryptophan (K/T) ratio, and the phenylalanine/tyrosine (P/T) ratio. The K/T and P/T ratios index dysregulated serotonin and catecholamine (e.g., dopamine) synthesis, respectively. In a cross-lagged panel model, a detectable viral load at 6 months predicted greater sexual compulsivity at 12 months after adjusting for prior levels of sexual compulsivity and recent stimulant use (β = 0.26, p = 0.046). A greater P/T ratio at baseline predicted decreased sexual sensation seeking at 6 months (β = - 0.25, p = 0.004) after adjusting for baseline sexual sensation seeking and recent stimulant use. Taken together, HIV replication and dysregulated catecholamine synthesis could potentiate sexual compulsivity while decreasing sexual pleasure in SMM who use meth.
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Affiliation(s)
- Hema R Kondur
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Tae K Lee
- Department of Child Psychology and Education, Sungkyunkwan University, Seoul, Korea
| | - Roger McIntosh
- Department of Psychology, University of Miami, Coral Gables, FL, USA
| | - Hetta Gouse
- Department of Psychiatry, University of Cape Town, Cape Town, South Africa
| | - Robert Paul
- Department of Psychological Sciences, University of Missouri St. Louis, St. Louis, MO, USA
| | - Christian Grov
- Graduate School of Public Health and Health Policy, City University of New York, New York, NY, USA
| | | | - Walter Gómez
- Jane Addams College of Social Work, University of Illinois, Chicago, IL, USA
| | - Samantha E Dilworth
- School of Medicine, Department of Medicine, Division of Prevention Science, San Francisco Center for AIDS Prevention Studies, University of California, San Francisco, USA
| | - Torsten B Neilands
- School of Medicine, Department of Medicine, Division of Prevention Science, San Francisco Center for AIDS Prevention Studies, University of California, San Francisco, USA
| | - Adam W Carrico
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL, 33136, USA.
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Reed GM, First MB, Billieux J, Cloitre M, Briken P, Achab S, Brewin CR, King DL, Kraus SW, Bryant RA. Emerging experience with selected new categories in the ICD-11: complex PTSD, prolonged grief disorder, gaming disorder, and compulsive sexual behaviour disorder. World Psychiatry 2022; 21:189-213. [PMID: 35524599 PMCID: PMC9077619 DOI: 10.1002/wps.20960] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Among the important changes in the ICD-11 is the addition of 21 new mental disorders. New categories are typically proposed to: a) improve the usefulness of morbidity statistics; b) facilitate recognition of a clinically important but poorly classified mental disorder in order to provide appropriate management; and c) stimulate research into more effective treatments. Given the major implications for the field and for World Health Organization (WHO) member states, it is important to examine the impact of these new categories during the early phase of the ICD-11 implementation. This paper focuses on four disorders: complex post-traumatic stress disorder, prolonged grief disorder, gaming disorder, and compulsive sexual behaviour disorder. These categories were selected because they have been the focus of considerable activity and/or controversy and because their inclusion in the ICD-11 represents a different decision than was made for the DSM-5. The lead authors invited experts on each of these disorders to provide insight into why it was considered important to add it to the ICD-11, implications for care of not having that diagnostic category, important controversies about adding the disorder, and a review of the evidence generated and other developments related to the category since the WHO signaled its intention to include it in the ICD-11. Each of the four diagnostic categories appears to describe a population with clinically important and distinctive features that had previously gone unrecognized as well as specific treatment needs that would otherwise likely go unmet. The introduction of these categories in the ICD-11 has been followed by a substantial expansion of research in each area, which has generally supported their validity and utility, and by a significant increase in the availability of appropriate services.
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Affiliation(s)
- Geoffrey M Reed
- Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Michael B First
- Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
- New York State Psychiatric Institute, New York, NY, USA
| | - Joël Billieux
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
- Center for Excessive Gambling, Addiction Medicine, Lausanne University Hospitals, Lausanne, Switzerland
| | - Marylene Cloitre
- National Center for PTSD Dissemination and Training Division, VA Palo Alto Health Care, Menlo Park, CA, USA
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Peer Briken
- Institute for Sex Research and Forensic Psychiatry, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sophia Achab
- Outpatient Treatment Unit for Addictive Behaviors ReConnecte, Geneva University Hospitals, Geneva, Switzerland
- Psychological and Sociological Research and Training Unit, Department of Psychiatry, University of Geneva, Geneva, Switzerland
| | - Chris R Brewin
- Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Daniel L King
- College of Education, Psychology, and Social Work, Flinders University, Adelaide, SA, Australia
| | - Shane W Kraus
- Department of Psychology, University of Nevada, Las Vegas, NV, USA
| | - Richard A Bryant
- School of Psychology, University of New South Wales, Sydney, NSW, Australia
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Liberg B, Görts-Öberg K, Jokinen J, Savard J, Dhejne C, Arver S, Fuss J, Ingvar M, Abé C. Neural and behavioral correlates of sexual stimuli anticipation point to addiction-like mechanisms in compulsive sexual behavior disorder. J Behav Addict 2022; 11:520-532. [PMID: 35895609 PMCID: PMC9295238 DOI: 10.1556/2006.2022.00035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/25/2022] [Accepted: 04/21/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND AIMS Compulsive sexual behavior disorder (CSBD) is characterized by persistent patterns of failure to control sexual impulses resulting in repetitive sexual behavior, pursued despite adverse consequences. Despite previous indications of addiction-like mechanisms and the recent impulse-control disorder classification in the International Classification of Diseases (ICD-11), the neurobiological processes underlying CSBD are unknown. METHODS We designed and applied a behavioral paradigm aimed at disentangling processes related to anticipation and viewing of erotic stimuli. In 22 male CSBD patients (age: M = 38.7, SD = 11.7) and 20 healthy male controls (HC, age: M = 37.6, SD = 8.5), we measured behavioral responses and neural activity during functional magnetic resonance imaging (fMRI). The main outcomes were response time differences between erotic and non-erotic trials and ventral striatum (VS) activity during anticipation of visual stimuli. We related these outcomes with each other, to CSBD diagnosis, and symptom severity. RESULTS We found robust case-control differences on behavioral level, where CSBD patients showed larger response time differences between erotic and non-erotic trials than HC. The task induced reliable main activations within each group. While we did not observe significant group differences in VS activity, VS activity during anticipation correlated with response time differences and self-ratings for anticipation of erotic stimuli. DISCUSSION AND CONCLUSIONS Our results support the validity and applicability of the developed task and suggest that CSBD is associated with altered behavioral correlates of anticipation, which were associated with ventral striatum activity during anticipation of erotic stimuli. This supports the idea that addiction-like mechanisms play a role in CSBD.
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Affiliation(s)
- Benny Liberg
- Department of Clinical Neuroscience, Osher Center, Karolinska Institutet, Stockholm, Sweden
| | - Katarina Görts-Öberg
- ANOVA Clinic, Karolinska University Hospital, Stockholm, Sweden,Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Jussi Jokinen
- Department of Clinical Sciences/Psychiatry, Umeå University, Umeå, Sweden,Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Josephine Savard
- ANOVA Clinic, Karolinska University Hospital, Stockholm, Sweden,Department of Clinical Sciences/Psychiatry, Umeå University, Umeå, Sweden
| | - Cecilia Dhejne
- ANOVA Clinic, Karolinska University Hospital, Stockholm, Sweden,Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Stefan Arver
- ANOVA Clinic, Karolinska University Hospital, Stockholm, Sweden,Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Johannes Fuss
- Institute of Forensic Psychiatry and Sex Research, Center for Translational Neuro- and Behavioral Sciences, University of Duisburg-Essen, Essen, Germany
| | - Martin Ingvar
- Department of Clinical Neuroscience, Osher Center, Karolinska Institutet, Stockholm, Sweden
| | - Christoph Abé
- Department of Clinical Neuroscience, Osher Center, Karolinska Institutet, Stockholm, Sweden,Quantify Research, Stockholm, Sweden,Corresponding author. Tel.: +468 52483265. E-mail:
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μ-opioid receptor availability is associated with sex drive in human males. COGNITIVE, AFFECTIVE, & BEHAVIORAL NEUROSCIENCE 2022; 22:281-290. [PMID: 34811707 PMCID: PMC8983533 DOI: 10.3758/s13415-021-00960-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 10/04/2021] [Indexed: 12/04/2022]
Abstract
The endogenous mu-opioid receptor (MOR) system modulates a multitude of social and reward-related functions, and exogenous opiates also influence sex drive in humans and animals. Sex drive shows substantial variation across humans, and it is possible that individual differences in MOR availability underlie interindividual of variation in human sex drive. We measured healthy male subjects’ (n = 52) brain’s MOR availability with positron emission tomography (PET) using an agonist radioligand, [11C]carfentanil, that has high affinity for MORs. Sex drive was measured using self-reports of engaging in sexual behaviour (sex with partner and masturbating). Bayesian hierarchical regression analysis revealed that sex drive was positively associated with MOR availability in cortical and subcortical areas, notably in caudate nucleus, hippocampus, and cingulate cortices. These results were replicated in full-volume GLM analysis. These widespread effects are in line with high spatial autocorrelation in MOR expression in human brain. Complementary voxel-based morphometry analysis (n = 108) of anatomical MR images provided limited evidence for positive association between sex drive and cortical density in the midcingulate cortex. We conclude that endogenous MOR tone is associated with individual differences in sex drive in human males.
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Zhang T, Yuan P, Cui Y, Yuan W, Jiang D. Convergent and Divergent Structural Connectivity of Brain White Matter Network Between Patients With Erectile Dysfunction and Premature Ejaculation: A Graph Theory Analysis Study. Front Neurol 2022; 13:804207. [PMID: 35273555 PMCID: PMC8902049 DOI: 10.3389/fneur.2022.804207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Background Sexual dysfunction, namely, erectile dysfunction (ED) and premature ejaculation (PE), has been found to be associated with abnormal structural connectivity in the brain. Previous studies have mainly focused on a single disorder, however, convergent and divergent structural connectivity patterns of the brain network between ED and PE remain poorly understood. Methods T1-weighted structural data and diffusion tensor imaging data of 28 patients with psychological ED, 28 patients with lifelong PE (LPE), and 28 healthy controls (HCs) were obtained to map the white matter (WM) brain networks. Then, the graph-theoretical method was applied to investigate the differences of network properties (small-world measures) of the WM network between patients with ED and LPE. Furthermore, nodal segregative and integrative parameters (nodal clustering coefficient and characteristic path length) were also explored between these patients. Results Small-world architecture of the brain networks were identified for both psychological ED and LPE groups. However, patients with ED exhibited increased average characteristic path length of the brain network when compared with patients with LPE and HCs. No significant difference was found in the average characteristic path length between patients with LPE and HCs. Moreover, increased nodal characteristic path length was found in the right middle frontal gyrus (orbital part) of patients with ED and LPE when compared with HCs. In addition, patients with ED had increased nodal characteristic path length in the right middle frontal gyrus (orbital part) when compared with patients with LPE. Conclusion Together, our results demonstrated that decreased integration of the right middle frontal gyrus (orbital part) might be a convergent neuropathological basis for both psychological ED and LPE. In addition, patients with ED also exhibited decreased integration in the whole WM brain network, which was not found in patients with LPE. Therefore, altered integration of the whole brain network might be the divergent structural connectivity patterns for psychological ED and LPE.
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Affiliation(s)
- Tielong Zhang
- Department of Urology, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Yancheng, China
| | - Peng Yuan
- Department of Intervention, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Yancheng, China
| | - Yonghua Cui
- Department of Neurosurgery, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Yancheng, China
| | - Weibiao Yuan
- Department of Radiology, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Yancheng, China
| | - Daye Jiang
- Department of Urology, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Yancheng, China
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Solly JE, Hook RW, Grant JE, Cortese S, Chamberlain SR. Structural gray matter differences in Problematic Usage of the Internet: a systematic review and meta-analysis. Mol Psychiatry 2022; 27:1000-1009. [PMID: 34642454 PMCID: PMC9054652 DOI: 10.1038/s41380-021-01315-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/18/2021] [Accepted: 09/22/2021] [Indexed: 12/24/2022]
Abstract
Problematic Usage of the Internet (PUI) has been linked to diverse structural gray matter changes in individual data studies. However, no quantitative synthesis across studies has been conducted. We aimed to identify gray matter regions showing significant spatial convergence across neuroimaging studies in PUI. We searched PubMed and PsycINFO up to 10/03/2021 and included original, cross-sectional comparative studies that examined structural gray matter imaging in PUI versus control groups; reported a whole-brain analysis; and provided peak coordinates for gray matter differences. From a total of 624 potentially relevant studies, 15 (including 355 individuals with PUI and 363 controls) were included in a meta-analysis of voxel-based morphometry studies. Anatomical likelihood estimation (ALE) meta-analysis was performed using extracted coordinates and identified significant spatial convergence in the medial/superior frontal gyri, the left anterior cingulate cortex/cingulate gyrus, and the left middle frontal/precentral gyri. Datasets contributing to these findings all indicated reduced gray matter in cases compared to controls. In conclusion, voxel-based morphometric studies indicate replicable gray matter reductions in the dorsolateral prefrontal cortex and anterior cingulate cortex in PUI, regions implicated in reward processing and top-down inhibitory control. Further studies are required to understand the nature of gray matter differences across PUI behaviors, as well as the contribution of particular mental health disorders, and the influence of variation in study and sample characteristics.
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Affiliation(s)
- Jeremy E. Solly
- grid.24029.3d0000 0004 0383 8386Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK ,grid.5335.00000000121885934Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - Roxanne W. Hook
- grid.5335.00000000121885934Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - Jon E. Grant
- grid.170205.10000 0004 1936 7822Department of Psychiatry, University of Chicago, Pritzker School of Medicine, Chicago, IL USA
| | - Samuele Cortese
- grid.5491.90000 0004 1936 9297Centre for Innovation in Mental Health, School of Psychology, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK ,grid.5491.90000 0004 1936 9297Clinical and Experimental Sciences (CNS and Psychiatry), Faculty of Medicine, University of Southampton, Southampton, UK ,grid.451387.c0000 0004 0491 7174Solent NHS Trust, Southampton, UK ,grid.240324.30000 0001 2109 4251Hassenfeld Children’s Hospital at NYU Langone, New York University Child Study Center, New York City, NY USA ,grid.4563.40000 0004 1936 8868Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
| | - Samuel R. Chamberlain
- grid.5335.00000000121885934Department of Psychiatry, University of Cambridge, Cambridge, UK ,grid.5491.90000 0004 1936 9297Clinical and Experimental Sciences (CNS and Psychiatry), Faculty of Medicine, University of Southampton, Southampton, UK ,grid.467048.90000 0004 0465 4159Southern Health NHS Foundation Trust, Southampton, UK ,grid.450563.10000 0004 0412 9303Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge, UK
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11
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Draps M, Sescousse G, Wilk M, Obarska K, Szumska I, Żukrowska W, Majkowska A, Kowalewska E, Szymanowska J, Hamerska U, Trybuś M, Golec K, Adamska I, Szymczak K, Gola M. An empirical study of affective and cognitive functions in Compulsive Sexual Behavior Disorder. J Behav Addict 2021; 10:657-674. [PMID: 34550905 PMCID: PMC8997196 DOI: 10.1556/2006.2021.00056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 07/19/2021] [Accepted: 08/06/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND AND AIMS Despite the inclusion of the Compulsive Sexual Behavior Disorder (CSBD) in the International Classification of Diseases, very little is known about the underlying affective and cognitive processes. To fill this gap, we compared CSBD subjects and Healthy-Controls (HC) across negative/positive valence, cognitive and sensorimotor systems, as proposed by the Research Domain Criteria framework. METHODS 74 heterosexual CSBD and 66 matched HC males were studied with 10 questionnaires and 8 behavioral tasks. Analyses were conducted with frequent and Bayesian statistics. RESULTS CSBD individuals showed significantly higher (than HC) punishment sensitivity, anxiety, depression, compulsivity, and impulsivity symptoms. Frequentist statistical analysis revealed significant interaction between subject group and condition in Incentive Delay Task, concerning the strength of motivation and hedonic value of erotic rewards. Bayesian analysis produced evidence for the absence of group differences in Facial Discrimination Task, Risk-Ambiguity Task, and Learning Task. Also, Bayesian methods provided evidence for group differences in the Emotional Stroop Task and the Incentive Delay Task. Sexual Discounting Task, Attentional Network Task, and Stop Signal Task produced mixed results. CONCLUSIONS Higher punishment sensitivity and impulsivity among CSBD subjects, along with significant interaction between these groups and erotic vs. non-erotic reward processing is in line with previous findings on negative/positive valence alterations in CSBD patients. This result shows that there are similarities to substance and behavioral addictions. The absence of group differences and mixed results related to cognitive and sensorimotor systems raise concerns to what extent CSBD resembles a wide spectrum of impairments observed in disorders, and demand further research.
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Affiliation(s)
- Małgorzata Draps
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland,Corresponding author. Tel.: +48 (22) 583 13 80/81. E-mail:
| | - Guillaume Sescousse
- Lyon Neuroscience Research Center, The National Center for Scientific Research and The National Institute of Health and Medical Research, Lyon, France
| | - Mateusz Wilk
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland
| | | | - Izabela Szumska
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland
| | | | | | - Ewelina Kowalewska
- Department of Psychiatry, Centre of Postgraduate Medical Education, Warsaw, Poland
| | | | - Urszula Hamerska
- SWPS University of Social Sciences and Humanities, Warsaw, Poland
| | - Magda Trybuś
- SWPS University of Social Sciences and Humanities, Warsaw, Poland
| | - Karolina Golec
- Faculty of Psychology, Warsaw University, Warsaw, Poland
| | | | - Karol Szymczak
- Institute of Psychology, The Maria Grzegorzewska University, Warsaw, Poland
| | - Mateusz Gola
- Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland,Swartz Center for Computational Neuroscience, Institute for Neural Computations, University of California San Diego, San Diego, USA
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12
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Griffin KR, Way BM, Kraus SW. Controversies and Clinical Recommendations for the Treatment of Compulsive Sexual Behavior Disorder. CURRENT ADDICTION REPORTS 2021. [DOI: 10.1007/s40429-021-00393-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Cuppone D, Gómez Pérez LJ, Cardullo S, Cellini N, Sarlo M, Soldatesca S, Chindamo S, Madeo G, Gallimberti L. The role of repetitive transcranial magnetic stimulation (rTMS) in the treatment of behavioral addictions: Two case reports and review of the literature. J Behav Addict 2021; 10:361-370. [PMID: 34232905 PMCID: PMC8996794 DOI: 10.1556/2006.2021.00032] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/14/2021] [Accepted: 05/15/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Several behaviors, besides consumption of psychoactive substances, produce short-term reward that may lead to persistent aberrant behavior despite adverse consequences. Growing evidence suggests that these behaviors warrant consideration as nonsubstance or "behavioral" addictions, such as pathological gambling, internet gaming disorder and internet addiction. CASE PRESENTATION Here, we report two cases of behavioral addictions (BA), compulsive sexual behavior disorder for online porn use and internet gaming disorder. A 57-years-old male referred a loss of control over his online pornography use, started 15 years before, while a 21-years-old male university student reported an excessive online gaming activity undermining his academic productivity and social life. Both patients underwent a high-frequency repetitive transcranial magnetic stimulation (rTMS) protocol over the left dorsolateral prefrontal cortex (l-DLPFC) in a multidisciplinary therapeutic setting. A decrease of addictive symptoms and an improvement of executive control were observed in both cases. DISCUSSION Starting from these clinical observations, we provide a systematic review of the literature suggesting that BAs share similar neurobiological mechanisms to those underlying substance use disorders (SUD). Moreover, we discuss whether neurocircuit-based interventions, such as rTMS, might represent a potential effective treatment for BAs.
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Affiliation(s)
- Diego Cuppone
- Novella Fronda Foundation
,
Piazza Castello, 16 - 35141
,
Padua
,
Italy
| | | | - Stefano Cardullo
- Novella Fronda Foundation
,
Piazza Castello, 16 - 35141
,
Padua
,
Italy
| | - Nicola Cellini
- Department of General Psychology, University of Padua
,
Padova
,
Italy,Department of Biomedical Sciences, University of Padova
,
Padova
,
Italy,Padova Neuroscience Center, University of Padova
,
Padova
,
Italy,Human Inspired Technology Center, University of Padova
,
Padova
,
Italy
| | - Michela Sarlo
- Department of Communication Sciences, Humanities and International Studies, University of Urbino Carlo Bo
,
Urbino
,
Italy
| | - Silvia Soldatesca
- Novella Fronda Foundation
,
Piazza Castello, 16 - 35141
,
Padua
,
Italy
| | - Sonia Chindamo
- Novella Fronda Foundation
,
Piazza Castello, 16 - 35141
,
Padua
,
Italy
| | - Graziella Madeo
- Novella Fronda Foundation
,
Piazza Castello, 16 - 35141
,
Padua
,
Italy
| | - Luigi Gallimberti
- Novella Fronda Foundation
,
Piazza Castello, 16 - 35141
,
Padua
,
Italy,
Corresponding author. E-mail:
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14
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Schmidt C, Gleesborg C, Schmidt H, Kvamme TL, Lund TE, Voon V, Møller A. A bias towards natural rewards away from gambling cues in gamblers undergoing active treatment. Brain Res 2021; 1764:147479. [PMID: 33852890 DOI: 10.1016/j.brainres.2021.147479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 03/20/2021] [Accepted: 04/05/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Disorders of substance and behavioral addiction are believed to be associated with a myopic bias towards the incentive salience of addiction-related cues away from general rewards in the environment. In non-treatment seeking gambling disorder patients, neural activity to anticipation of monetary rewards is enhanced relative to erotic rewards. Here we focus on the balance between anticipation of reward types in active treatment gamblers relative to healthy volunteers. METHODS Fifty-three (25 gambling disorder males, 28 age-matched male healthy volunteers) were scanned with fMRI performing a Monetary Incentive Delay task with monetary and erotic outcomes. RESULTS During reward anticipation, gambling disorder was associated with greater left orbitofrontal cortex and ventral striatal activity to erotic relative to monetary reward anticipation compared to healthy volunteers. Lower impulsivity correlated with greater activity in the dorsal striatum and dorsal anterior cingulate cortex to erotic anticipation in gambling disorder subjects. In the outcome phase, gambling disorder subjects showed greater activity in the ventral striatum, ventromedial and dorsolateral prefrontal cortex and anterior cingulate cortex to both reward types relative to healthy volunteers. CONCLUSIONS These findings contrast directly with previous findings in non-treatment seeking gambling disorder. Our observations highlight the role of treatment state in active treatment gambling disorder, emphasizing a potential influence of treatment status, gambling abstinence or cognitive behavioral therapy on increasing the salience of general rewards beyond that of gambling-related cues. These findings support a potential therapeutic role for targeting the salience of non-gambling related rewards and potential biomarkers for treatment efficacy.
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Affiliation(s)
- Casper Schmidt
- Department of Communication and Psychology, Aalborg University, Rendsburggade 14, 9000 Aalborg, Denmark; Center of Functionally Integrative Neuroscience/MINDLab, Danish Neuroscience Center, Aarhus University Hospital, Nørrebrogade 44, Building 1A, 8000 Aarhus C, Denmark; Department of Nuclear Medicine & PET-Centre, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, Indgang J, Plan 2, J220, 8200 Aarhus N, Denmark; Department of Psychiatry, University of Cambridge, Herchel Smith Building for Brain & Mind Sciences, Forvie Site, Robinson Way, Cambridge CB2 0SZ, United Kingdom.
| | - Carsten Gleesborg
- Center of Functionally Integrative Neuroscience/MINDLab, Danish Neuroscience Center, Aarhus University Hospital, Nørrebrogade 44, Building 1A, 8000 Aarhus C, Denmark; Department of Nuclear Medicine & PET-Centre, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, Indgang J, Plan 2, J220, 8200 Aarhus N, Denmark
| | - Hema Schmidt
- Center of Functionally Integrative Neuroscience/MINDLab, Danish Neuroscience Center, Aarhus University Hospital, Nørrebrogade 44, Building 1A, 8000 Aarhus C, Denmark; Department of Nuclear Medicine & PET-Centre, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, Indgang J, Plan 2, J220, 8200 Aarhus N, Denmark
| | - Timo L Kvamme
- Center of Functionally Integrative Neuroscience/MINDLab, Danish Neuroscience Center, Aarhus University Hospital, Nørrebrogade 44, Building 1A, 8000 Aarhus C, Denmark; Centre for Alcohol and Drug Research, Psychological Institute, Business and Social Sciences, Aarhus University, Bartholins Allé 10, Aarhus C, Denmark
| | - Torben E Lund
- Center of Functionally Integrative Neuroscience/MINDLab, Danish Neuroscience Center, Aarhus University Hospital, Nørrebrogade 44, Building 1A, 8000 Aarhus C, Denmark
| | - Valerie Voon
- Department of Psychiatry, University of Cambridge, Herchel Smith Building for Brain & Mind Sciences, Forvie Site, Robinson Way, Cambridge CB2 0SZ, United Kingdom; Behavioral and Clinical Neurosciences Institute, Department of Psychology, University of Cambridge, Downing Street, Cambridge CB2, 3EB, United Kingdom; Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge Rd, Fulbourn, Cambridge CB21 5HH, United Kingdom
| | - Arne Møller
- Center of Functionally Integrative Neuroscience/MINDLab, Danish Neuroscience Center, Aarhus University Hospital, Nørrebrogade 44, Building 1A, 8000 Aarhus C, Denmark; Department of Nuclear Medicine & PET-Centre, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, Indgang J, Plan 2, J220, 8200 Aarhus N, Denmark
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15
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Chen J, Yang J, Huang X, Wang Q, Lu C, Liu S, Chen Y, Ni L. Brain Functional Biomarkers Distinguishing Premature Ejaculation From Anejaculation by ALFF: A Resting-State fMRI Study. J Sex Med 2020; 17:2331-2340. [PMID: 33023837 DOI: 10.1016/j.jsxm.2020.09.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/24/2020] [Accepted: 09/09/2020] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Premature ejaculation (PE) and anejaculation (AJ) are 2 opposite disorders of male ejaculatory dysfunction. Recent studies have demonstrated that the process of ejaculation is mediated by certain neural circuits in the brain. However, different mechanisms between PE and AJ are still unclear. AIM Therefore, we used resting-state functional magnetic resonance imaging (fMRI) to explore the underlying neural mechanisms in patients with PE and AJ by measuring the amplitude of low-frequency fluctuations (ALFF). METHODS Resting-state fMRI data were acquired in 17 PE, 20 AJ patients and 23 matched healthy controls (HC). MAIN OUTCOME MEASURE Differences of ALFF values among the 3 groups were compared. We also explored the correlations between brain regions showing altered ALFF values and scores of Premature Ejaculation Diagnostic Tool (PEDT) in the PE group. RESULTS There were widespread differences of ALFF values among the 3 groups, which included left anterior cingulate gyrus, precentral and postcentral gyrus, paracentral lobule, superior temporal gyrus, calcarine fissure, putamen; right postcentral gyrus, paracentral lobule, middle temporal gyrus, putamen. Compared with HC, PE patients had greater ALFF in the right inferior frontal gyrus (opercular part), AJ patients had greater ALFF in the left postcentral gyrus. In addition, PE patients exhibited greater ALFF in the left Rolandic operculum, anterior cingulate gyrus, inferior frontal gyrus (orbital part), putamen, and right putamen when compared with AJ patients, as well as decreased ALFF in the right postcentral gyrus. Moreover, positive correlations were found between ALFF of left postcentral gyrus, inferior frontal gyrus (orbital part), right inferior frontal gyrus (opercular part), and PEDT scores. CLINICAL IMPLICATIONS The differences in central pathophysiological mechanisms between PE and AJ might be useful for improving the clinical diagnosis of ejaculation dysfunction. STRENGTH & LIMITATIONS Our results showed that the method of fMRI could identify the differences of ALFF between PE and AJ and that these alterations in ALFF were related to clinical function. However, this was a relatively small sample study, and further multimodal neuroimaging studies with large samples were needed. CONCLUSION The findings demonstrated that altered ALFF of frontal, parietal cortex, and putamen might help distinguish premature ejaculation from anejaculation. Abnormal function of these brain regions might play a critical role in the physiopathology of ejaculatory dysfunction of patients. Chen J, Yang J, Huang X, et al. Brain Functional Biomarkers Distinguishing Premature Ejaculation From Anejaculation by ALFF: A Resting-State fMRI Study. J Sex Med 2020;17:2331-2340.
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Affiliation(s)
- Jianhuai Chen
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jie Yang
- Department of Urology, Jiangsu Provincial People's Hospital, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xinfei Huang
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Qing Wang
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Chao Lu
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shaowei Liu
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Yun Chen
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
| | - Liangyu Ni
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
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16
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Sassover E, Weinstein A. Should compulsive sexual behavior (CSB) be considered as a behavioral addiction? A debate paper presenting the opposing view. J Behav Addict 2020; 11. [PMID: 32997646 PMCID: PMC9295215 DOI: 10.1556/2006.2020.00055] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/18/2020] [Accepted: 08/18/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND AIMS Compulsive sexual behavior disorder (CSBD) has been a long debated issue. While formerly the discussion was about whether to regard CSBD as a distinctive disorder, the current debate is dealing with the classification of this phenomenon. One of the prominent voices in this field considers CSBD as a behavioral addiction and proposes CSBD to be called and diagnosed as sexual addiction (SA). This present debate paper will review the existing evidence supporting this view and it will argue against it. RESULTS We have found that a great deal of the current literature is anecdotal while empirical evidence is insufficient. First, the reports about the prevalence of CSBD are contradictory. Additionally, the field mainly suffers from inconsistent defining criteria of CSBD and a consensus which symptoms should be included. As a result, the empirical evidence that does exist is mostly about some symptoms individually and not on the disorder as a whole construct. CONCLUSIONS We conclude that currently, there is not enough data supporting CSBD as a behavioral addiction. Further research has to be done, examining CSBD phenomenology as a whole construct and based on a homogeneous criterion.
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Affiliation(s)
- Eli Sassover
- Department of Behavioral Science, Ariel University, Science Park, Ariel, Israel
- Department of Behavioral Science and Integrative Brain and Cognition Center, Ariel University, Ariel, Israel
| | - Aviv Weinstein
- Department of Behavioral Science, Ariel University, Science Park, Ariel, Israel
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17
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Sexual addiction 25 years on: A systematic and methodological review of empirical literature and an agenda for future research. Clin Psychol Rev 2020; 82:101925. [PMID: 33038740 DOI: 10.1016/j.cpr.2020.101925] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 12/16/2022]
Abstract
In 1998, Gold and Heffner authored a landmark review in Clinical Psychology Review on the topic of sexual addiction that concluded that sexual addiction, though increasingly popular in mental health settings, was largely based on speculation, with virtually no empirical basis. In the more than two decades since that review, empirical research around compulsive sexual behaviors (which subsumes prior research about sexual addiction) has flourished, ultimately culminating in the inclusion of a novel diagnosis of Compulsive Sexual Behavior Disorder in the eleventh edition of the World Health Organization's International Classification of Diseases. The present work details a systematic review of empirical research published between January 1st, 1995 and August 1st, 2020 related to compulsive sexual behaviors, with a specific focus on evaluating the methodologies of that literature. This review yielded 371 papers detailing 415 individual studies. In general, the present review finds that, although research related to compulsive sexual behaviors has proliferated, much of this work is characterized by simplistic methodological designs, a lack of theoretical integration, and an absence of quality measurement. Moreover, the present review finds a virtual absence of high-quality treatment-related research published within this time frame. Implications of these findings for both clinical practice and future research are discussed.
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18
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Gray Matter Volume Differences in Impulse Control and Addictive Disorders-An Evidence From a Sample of Heterosexual Males. J Sex Med 2020; 17:1761-1769. [PMID: 32690426 DOI: 10.1016/j.jsxm.2020.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/16/2020] [Accepted: 05/10/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUNDS The classification of addictions and impulse control disorders is changing as reflected in the 11th version of International Classification of Disorders (WHO, 2018). However, studies focusing on direct comparison of structural brain differences in behavioral and substance addictions are limited. AIM Here, we contrast gray matter volumes (GMVs) across groups of individuals with compulsive sexual behavior disorder (CSBD), gambling disorder (GD), and alcohol use disorder (AUD) with those with none of these disorders (healthy controls participants; HCs). METHODS Voxel-based morphometry was used to study brain structure, and severities of addiction symptoms were assessed with questionnaires. To identify brain regions related to severities of addictions, correlations between questionnaire scores and GMVs were computed. MAIN OUTCOME We collected magnetic resonance imaging (GMVs) data from 26 patients with CSBD, 26 patients with GD, 21 patients with AUD, and 25 HC participants (all heterosexual males; age: 24-60; mean = 34.5, standard deviation = 6.48). RESULTS Affected individuals (CSBD, GD, AUD) compared with HC participants showed smaller GMVs in the left frontal pole, specifically in the orbitofrontal cortex. The most pronounced differences were observed in the GD and AUD groups, and the least in the CSBD group. In addition, a negative correlation was found between GMVs and disorder severity in the CSBD group. Higher severity of CSBD symptoms was correlated with decreased GMVs in the right anterior cingulate gyrus. CLINICAL IMPLICATIONS Our findings suggest similarities between CSBD and addictions. STRENGHS AND LIMITIATIONS This study is the first showing smaller GMVs in 3 clinical groups of CSBD, GD, and AUD. But the study was limited only to heterosexual men. Longitudinal studies should examine the extent to which ventral prefrontal decrements in volume may represent preexisting vulnerability factors or whether they may develop with disorder progression. CONCLUSIONS Our research extends prior findings in substance use disorders of lower GMVs in prefrontal cortical volumes among 3 clinical groups of patients with specific impulse control (CSBD) and behavioral (GD) and substance (AUD) addictive disorders. The negative correlation between CSBD symptoms and GMV of right anterior cingulate gyrus suggests a link with clinical symptomatology. Draps M, Sescousse G, Potenza MN, et al. Gray Matter Volume Differences in Impulse Control and Addictive Disorders-An Evidence From a Sample of Heterosexual Males. J Sex Med 2020;17:1761-1769.
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19
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Kuiper LB, Lucas KA, Mai V, Coolen LM. Enhancement of Drug Seeking Following Drug Taking in a Sexual Context Requires Anterior Cingulate Cortex Activity in Male Rats. Front Behav Neurosci 2020; 14:87. [PMID: 32670029 PMCID: PMC7330085 DOI: 10.3389/fnbeh.2020.00087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 05/08/2020] [Indexed: 11/13/2022] Open
Abstract
Individual variance in vulnerability to develop addictions is influenced by social factors. Specifically, drug-taking in a sexual context appears to enhance further drug-seeking behavior in human users, as these users identify the effects of drugs to enhance sexual pleasure as a primary reason for continued drug use. Methamphetamine (Meth) is commonly used in this context. Similarly, male rats that self-administered Meth immediately followed by sexual behavior display enhanced drug-seeking behavior, including attenuation of extinction and increased reinstatement to seeking of Meth-associated cues. Hence, drug-taking in a sexual context enhances vulnerability for addiction. However, the neural mechanisms by which this occurs are unknown. Here the hypothesis was tested that medial prefrontal cortex is essential for this effect of Meth and sex when experienced concurrently. First it was shown that CaMKII neurons in the anterior cingulate area (ACA) were co-activated by both Meth and sex. Next, chemogenetic inactivation of ACA CaMKII cells using AAV5-CaMKIIa-hM4Di-mCherry was shown not to affect Meth-induced locomotor activity or sexual behavior. Subsequently, chemogenetic inactivation of ACA CaMKII neurons during Meth self-administration followed by sexual behavior was shown to prevent the effects of Meth and sex on enhanced reinstatement of Meth-seeking but did not affect enhanced drug-seeking during extinction tests. These results indicate that ACA CaMKII cell activation during exposure to Meth in a sexual context plays an essential role in the subsequent enhancement of drug-seeking during reinstatement tests.
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Affiliation(s)
- Lindsey B Kuiper
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS, United States
| | - Kathryn A Lucas
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS, United States
| | - Vy Mai
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS, United States
| | - Lique M Coolen
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS, United States.,Brain Health Research Institute, Kent State University, Kent, OH, United States.,Department of Biological Sciences, Kent State University, Kent, OH, United States
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20
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Janssen E, Prause N, Swinburne Romine R, Raymond N, MacDonald A, Coleman E, Miner MH. Sexual Responsivity and the Effects of Negative Mood on Sexual Arousal in Hypersexual Men Who Have Sex With Men (MSM). J Sex Med 2020; 17:1751-1760. [PMID: 32653392 DOI: 10.1016/j.jsxm.2020.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 04/20/2020] [Accepted: 05/05/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND A number of studies have found that hypersexuality is associated with a high propensity for sexual excitation. In comparison, less is known about the relationship between hypersexuality and sexual arousal at the state level. Also, previous research has revealed a relationship between hypersexuality and negative mood. However, the possibility that sexual response might not be as negatively impacted by negative mood in hypersexual individuals has, as yet, not been tested. AIM The purpose of this study was to investigate sexual responsivity and the effects of negative mood on sexual arousal in hypersexual men who have sex with men (MSM). METHODS A total of 211 MSM were assigned to a hypersexuality (N = 81) or a control (N = 130) group using an interview patterned with a semi-structured Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders format. Participants filled out questionnaires and were shown neutral, sexual, and anxiety- and sadness-inducing films. OUTCOMES Changes in penile circumference and self-reported sexual arousal were the primary outcomes analyzed in this study. RESULTS Controlling for age and HIV status, no differences were found in genital response between hypersexual and non-hypersexual men. Also, the 2 groups did not differ in subjective sexual arousal. Moreover, no effects of negative mood were found. Time series clustering analyses revealed 3 groups-low responders and slow and fast high responders. Sexual excitation, but not sexual compulsivity or pornography use, predicted cluster membership. CLINICAL TRANSLATION Hypersexual MSM may benefit more from an exploration of motivational and behavioral, as compared to psychophysiological, mechanisms underlying possible links between (negative) mood and sexual behavior. STRENGTHS & LIMITATIONS Strengths of the study include its sample size, making it one of the larger psychophysiological sex studies; the use of clinical interviews for group assignment; the inclusion of genital response measures; and the application of time series clustering to examine differences among participants. Limitations include possible sample heterogeneity and the reliance on researcher-selected stimuli. CONCLUSION Given the lack of any effects of negative mood on sexual response in hypersexual MSM, future studies could explore in more depth possible motivational and behavioral effects, including, for example, the impact of negative mood on the tendency to seek out sex as a form of distraction or for validation or emotional support. Janssen E, Prause N, Romine RS, et al. Sexual Responsivity and the Effects of Negative Mood on Sexual Arousal in Hypersexual Men Who Have Sex With Men (MSM). J Sex Med 2020;17:1751-1760.
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Affiliation(s)
- Erick Janssen
- Institute for Family and Sexuality Studies, Department of Neurosciences, University of Leuven, Leuven, Belgium; Kinsey Institute, Indiana University, IN, USA.
| | | | | | - Nancy Raymond
- Department of Psychiatry, University of Wisconsin, Madison, WI, USA
| | - Angus MacDonald
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - Eli Coleman
- Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Michael H Miner
- Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, MN, USA
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Goslar M, Leibetseder M, Muench HM, Hofmann SG, Laireiter AR. Treatments for internet addiction, sex addiction and compulsive buying: A meta-analysis. J Behav Addict 2020; 9:14-43. [PMID: 32359229 PMCID: PMC8935188 DOI: 10.1556/2006.2020.00005] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND AIMS Internet addiction, sex addiction and compulsive buying are common behavioral problems, which share similarities with gambling disorder and substance use disorders. However, little is known about the efficacy of their treatments. The objective of this meta-analysis was to examine the efficacy of the treatments of such problem behaviors, and to draw parallels to gambling disorder and substance use disorders in terms of treatment response. METHODS Literature search yielded 91 studies totaling 3,531 participants to provide a comprehensive evaluation of the short-term and long-term efficacy of psychological, pharmacological and combined treatments for internet addiction, sex addiction, and compulsive buying. RESULTS Psychological, pharmacological, and combined treatments were associated with robust pre-post improvements in the global severity of internet addiction (Hedges's g: 1.51, 1.13, and 2.51, respectively) and sex addiction (Hedges's g: 1.09, 1.21, and 1.91, respectively). For compulsive buying, psychological and pharmacological treatments were also associated with a large-sized pre-post reduction in global severity (Hedges's g: 1.00 and 1.52, respectively). The controlled pre-post and within-group pre-follow-up effect sizes were in the similar range, with few exceptions. Moderator analyses suggest that psychological interventions are effective for reducing compulsive behaviors, especially when delivered face-to-face and conducted over extended periods of time. Combinations of cognitive-behavioral approaches with medications showed an advantage over monotherapies. DISCUSSION AND CONCLUSIONS The results suggest that treatments for common behavioral addictions are effective in the short term, similar to those implemented for gambling disorder and substance use disorders, but more rigorous clinical trials are needed.
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Affiliation(s)
- Martina Goslar
- Department of Psychology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria,Corresponding author. Department of Psychology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria. Fax: +43/(0)662/8044 5126. E-mail:
| | - Max Leibetseder
- Department of Psychology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria
| | - Hannah M. Muench
- Psychosomatisches Zentrum Waldviertel (PSZW), Universitätsklinik für Psychosomatische Medizin der Karl Landsteiner Privat-Universität, Grafenbergerstraße 2, 3730, Eggenburg, Austria
| | - Stefan G. Hofmann
- Department of Psychological and Brain Sciences, Boston University, 900 Commonwealth Avenue, 2nd Fl., Boston, MA, 02215, USA
| | - Anton-Rupert Laireiter
- Department of Psychology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria,Faculty of Psychology, University of Vienna, Liebiggasse 5, 1010, Wien, Austria
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22
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Qin K, Zhang F, Chen T, Li L, Li W, Suo X, Lei D, Kemp GJ, Gong Q. Shared gray matter alterations in individuals with diverse behavioral addictions: A voxel-wise meta-analysis. J Behav Addict 2020; 9:44-57. [PMID: 32359230 PMCID: PMC8935193 DOI: 10.1556/2006.2020.00006] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND AIMS Numerous studies on behavioral addictions (BAs) have reported gray matter (GM) alterations in multiple brain regions by using voxel-based morphometry (VBM). However, findings are poorly replicated and it remains elusive whether distinct addictive behaviors are underpinned by shared abnormalities. In this meta-analysis, we integrated VBM studies on different BAs to investigate common GM abnormalities in individuals with BAs. METHODS Numerous studies on behavioral addictions (BAs) have reported gray matter (GM) alterations in multiple brain regions by using voxel-based morphometry (VBM). However, findings are poorly replicated and it remains elusive whether distinct addictive behaviors are underpinned by shared abnormalities. In this meta-analysis, we integrated VBM studies on different BAs to investigate common GM abnormalities in individuals with BAs. RESULTS Twenty studies including 505 individuals with BAs and 564 healthy controls met the inclusion criteria. Compared with healthy controls, individuals with BAs showed GM atrophy in the left anterior cingulate (extending to the left medial superior frontal gyrus and bilateral orbitofrontal gyrus), right putamen and right supplementary motor area. Subgroup analysis found heterogeneity in gender and subtypes of BAs. Meta-regression revealed that GM decreases in the left anterior cingulate and right supplementary motor area were positively correlated with addictive severity. Higher impulsivity was associated with smaller volume of the left anterior cingulate. DISCUSSION AND CONCLUSIONS Our findings on BAs were mainly derived from internet gaming disorder (IGD) and pathological gambling (PG) studies, preliminarily suggesting that GM atrophy in the prefrontal and striatal areas might be a common structural biomarker of BAs.
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Affiliation(s)
- Kun Qin
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Feifei Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Taolin Chen
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lei Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Wenbin Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Xueling Suo
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Du Lei
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China,Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Corresponding author. Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, 260 Stetson St., Suite 3326, Cincinnati, OH, USA. E-mail:
| | - Graham J. Kemp
- Liverpool Magnetic Resonance Imaging Centre (LiMRIC), Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, UK
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China,Psychoradiology Research Unit of Chinese Academy of Medical Sciences, West China Hospital of Sichuan University, Chengdu, Sichuan, China,Corresponding author. Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, China. E-mail:
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23
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Calabrò RS, Cacciola A, Bruschetta D, Milardi D, Quattrini F, Sciarrone F, la Rosa G, Bramanti P, Anastasi G. Neuroanatomy and function of human sexual behavior: A neglected or unknown issue? Brain Behav 2019; 9:e01389. [PMID: 31568703 PMCID: PMC6908863 DOI: 10.1002/brb3.1389] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/03/2019] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Sexual desire, arousal, and orgasm are mediated by complex, yet still not fully understood, interactions of the somatic and autonomic nervous systems operating at the central and peripheral levels. Disruption of endocrine, neural, or vascular response, caused by aging, medical illness, neurological diseases, surgery, or drugs, can lead to sexual dysfunctions, thus significantly affecting patients' quality of life. PURPOSE This narrative review aims at characterizing the involvement of the central nervous system in human sexual behavior. METHODS A literature search was conducted using PubMed in its entirety up to June 2018, analyzing the studies dealing with the neurobiological and neurophysiological basis of human sexuality. RESULTS Sexual behavior is regulated by both subcortical structures, such as the hypothalamus, brainstem, and spinal cord, and several cortical brain areas acting as an orchestra to finely adjust this primitive, complex, and versatile behavior. At the central level, dopaminergic and serotonergic systems appear to play a significant role in various factors of sexual response, although adrenergic, cholinergic, and other neuropeptide transmitter systems may contribute as well. CONCLUSIONS Providing healthcare professionals with information concerning sexual behavior may overcome useless and sometimes dangerous barriers and improve patient management, since sexual well-being is considered one of the most important aspects of one's quality of life.
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Affiliation(s)
| | | | - Daniele Bruschetta
- Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
| | - Demetrio Milardi
- IRCCS Centro Neurolesi "Bonino Pulejo", Messina, Italy.,Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
| | | | | | | | | | - Giuseppe Anastasi
- Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
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24
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Brand M, Wegmann E, Stark R, Müller A, Wölfling K, Robbins TW, Potenza MN. The Interaction of Person-Affect-Cognition-Execution (I-PACE) model for addictive behaviors: Update, generalization to addictive behaviors beyond internet-use disorders, and specification of the process character of addictive behaviors. Neurosci Biobehav Rev 2019; 104:1-10. [PMID: 31247240 DOI: 10.1016/j.neubiorev.2019.06.032] [Citation(s) in RCA: 600] [Impact Index Per Article: 120.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/17/2019] [Accepted: 06/23/2019] [Indexed: 12/24/2022]
Abstract
We propose an updated version of the Interaction of Person-Affect-Cognition-Execution (I-PACE) model, which we argue to be valid for several types of addictive behaviors, such as gambling, gaming, buying-shopping, and compulsive sexual behavior disorders. Based on recent empirical findings and theoretical considerations, we argue that addictive behaviors develop as a consequence of the interactions between predisposing variables, affective and cognitive responses to specific stimuli, and executive functions, such as inhibitory control and decision-making. In the process of addictive behaviors, the associations between cue-reactivity/craving and diminished inhibitory control contribute to the development of habitual behaviors. An imbalance between structures of fronto-striatal circuits, particularly between ventral striatum, amygdala, and dorsolateral prefrontal areas, may be particularly relevant to early stages and the dorsal striatum to later stages of addictive processes. The I-PACE model may provide a theoretical foundation for future studies on addictive behaviors and clinical practice. Future studies should investigate common and unique mechanisms involved in addictive, obsessive-compulsive-related, impulse-control, and substance-use disorders.
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Affiliation(s)
- Matthias Brand
- General Psychology: Cognition and Center for Behavioral Addiction Research (CeBAR), University of Duisburg-Essen, Germany; Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, Germany.
| | - Elisa Wegmann
- General Psychology: Cognition and Center for Behavioral Addiction Research (CeBAR), University of Duisburg-Essen, Germany
| | - Rudolf Stark
- Department of Psychotherapy and Systems Neuroscience, Justus-Liebig-University of Giessen, Germany; Bender Institute of Neuroimaging, Justus-Liebig-University of Giessen, Germany
| | - Astrid Müller
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Klaus Wölfling
- Outpatient Clinic for Behavioral Addiction, Department of Psychosomatic Medicine and Psychotherapy, University Medical Center, Johannes Gutenberg University Mainz, Germany
| | - Trevor W Robbins
- Department of Psychology, Behavioural and Clinical Neuroscience Institute, University of Cambridge, UK
| | - Marc N Potenza
- Departments of Psychiatry, Neuroscience and Child Study, Yale University School of Medicine, New Haven, USA; Connecticut Council on Problem Gambling, Wethersfield, USA; Connecticut Mental Health Center, New Haven, USA
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25
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de Alarcón R, de la Iglesia JI, Casado NM, Montejo AL. Online Porn Addiction: What We Know and What We Don't-A Systematic Review. J Clin Med 2019; 8:E91. [PMID: 30650522 PMCID: PMC6352245 DOI: 10.3390/jcm8010091] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/27/2018] [Accepted: 01/10/2019] [Indexed: 01/09/2023] Open
Abstract
In the last few years, there has been a wave of articles related to behavioral addictions; some of them have a focus on online pornography addiction. However, despite all efforts, we are still unable to profile when engaging in this behavior becomes pathological. Common problems include: sample bias, the search for diagnostic instrumentals, opposing approximations to the matter, and the fact that this entity may be encompassed inside a greater pathology (i.e., sex addiction) that may present itself with very diverse symptomatology. Behavioral addictions form a largely unexplored field of study, and usually exhibit a problematic consumption model: loss of control, impairment, and risky use. Hypersexual disorder fits this model and may be composed of several sexual behaviors, like problematic use of online pornography (POPU). Online pornography use is on the rise, with a potential for addiction considering the "triple A" influence (accessibility, affordability, anonymity). This problematic use might have adverse effects in sexual development and sexual functioning, especially among the young population. We aim to gather existing knowledge on problematic online pornography use as a pathological entity. Here we try to summarize what we know about this entity and outline some areas worthy of further research.
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Affiliation(s)
- Rubén de Alarcón
- Psychiatry Service, Hospital Clínico Universitario de Salamanca, Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.
| | - Javier I de la Iglesia
- Psychiatry Service, Hospital Clínico Universitario de Salamanca, Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.
| | - Nerea M Casado
- Psychiatry Service, Hospital Clínico Universitario de Salamanca, Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.
| | - Angel L Montejo
- Psychiatry Service, Hospital Clínico Universitario de Salamanca, Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.
- University of Salamanca, EUEF, 37007 Salamanca, Spain.
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26
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Kneer J, Borchardt V, Kärgel C, Sinke C, Massau C, Tenbergen G, Ponseti J, Walter H, Beier KM, Schiffer B, Schiltz K, Walter M, Kruger THC. Diminished fronto-limbic functional connectivity in child sexual offenders. J Psychiatr Res 2019. [PMID: 29530321 DOI: 10.1016/j.jpsychires.2018.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Child sexual abuse and neglect have been related to an increased risk for the development of a wide range of behavioral, psychological, and sexual problems and increased rates of suicidal behavior. Contrary to the large amount of research focusing on the negative mental health consequences of child sexual abuse, very little is known about the characteristics of child sexual offenders and the neuronal underpinnings contributing to child sexual offending. METHODS AND SAMPLE This study investigates differences in resting state functional connectivity (rs-FC) between non-pedophilic child sexual offenders (N = 20; CSO-P) and matched healthy controls (N = 20; HC) using a seed-based approach. The focus of this investigation of rs-FC in CSO-P was put on prefrontal and limbic regions highly relevant for emotional and behavioral processing. RESULTS Results revealed a significant reduction of rs-FC between the right centromedial amygdala and the left dorsolateral prefrontal cortex in child sexual offenders compared to controls. CONCLUSION & RECOMMENDATIONS Given that, in the healthy brain, there is a strong top-down inhibitory control of prefrontal over limbic structures, these results suggest that diminished rs-FC between the amygdala and the dorsolateral prefrontal cortex and may foster sexual deviance and sexual offending. A profound understanding of these concepts should contribute to a better understanding of the occurrence of child sexual offending, as well as further development of more differentiated and effective interventions.
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Affiliation(s)
- Jonas Kneer
- Division of Clinical Psychology and Sexual Medicine, Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg Strasse 1, D-30625 Hannover, Germany
| | - Viola Borchardt
- Clinical Affective Neuroimaging Laboratory, Magdeburg, Germany; Leibniz Institute for Neurobiology, Department of Behavioral Neurology, Magdeburg, Germany
| | - Christian Kärgel
- LWL-University Hospital Bochum, Division of Forensic Psychiatry, Alexandrinenstr. 1-3, 44791 Bochum, Germany
| | - Christopher Sinke
- Division of Clinical Psychology and Sexual Medicine, Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg Strasse 1, D-30625 Hannover, Germany
| | - Claudia Massau
- LWL-University Hospital Bochum, Division of Forensic Psychiatry, Alexandrinenstr. 1-3, 44791 Bochum, Germany
| | - Gilian Tenbergen
- Department of Psychology, SUNY College at Oswego, Oswego, NY, USA
| | - Jorge Ponseti
- Institute of Sexual Medicine and Forensic Psychiatry and Psychotherapy, Kiel University, Medical School, Kiel, Germany
| | - Henrik Walter
- Division of Mind and Brain Research, Department of Psychiatry and Psychotherapy CCM, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Klaus M Beier
- Institute of Sexology and Sexual Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Boris Schiffer
- LWL-University Hospital Bochum, Division of Forensic Psychiatry, Alexandrinenstr. 1-3, 44791 Bochum, Germany
| | - Kolja Schiltz
- Department of Forensic Psychiatry, Psychiatric Hospital of the Ludwig-Maximilians-University, München, Germany; (j)Otto-von-Guericke-University Magdeburg, Department of Psychiatry, Leipziger Str. 44, 39120 Magdeburg, Germany
| | - Martin Walter
- Department of Psychiatry University of Tübingen Osianderstr. 24, 72076 Tübingen, Germany
| | - Tillmann H C Kruger
- Division of Clinical Psychology and Sexual Medicine, Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg Strasse 1, D-30625 Hannover, Germany
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27
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Coleman E, Dickenson JA, Girard A, Rider GN, Candelario-Pérez LE, Becker-Warner R, Kovic AG, Munns R. An Integrative Biopsychosocial and Sex Positive Model of Understanding and Treatment of Impulsive/Compulsive Sexual Behavior. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/10720162.2018.1515050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Eli Coleman
- University of Minnesota, Minneapolis, Minnesota
| | | | - Abby Girard
- University of Minnesota, Minneapolis, Minnesota
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28
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Stark R, Klucken T, Potenza MN, Brand M, Strahler J. A Current Understanding of the Behavioral Neuroscience of Compulsive Sexual Behavior Disorder and Problematic Pornography Use. Curr Behav Neurosci Rep 2018. [DOI: 10.1007/s40473-018-0162-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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30
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Kuiper LB, Coolen LM. Compulsive Sexual Behavior in Humans and Preclinical Models. CURRENT SEXUAL HEALTH REPORTS 2018. [DOI: 10.1007/s11930-018-0157-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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31
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Seok JW, Sohn JH. Gray matter deficits and altered resting-state connectivity in the superior temporal gyrus among individuals with problematic hypersexual behavior. Brain Res 2018; 1684:30-39. [PMID: 29421186 DOI: 10.1016/j.brainres.2018.01.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 01/10/2018] [Accepted: 01/30/2018] [Indexed: 10/18/2022]
Abstract
Neuroimaging studies on the characteristics of hypersexual disorder have been accumulating, yet alternations in brain structures and functional connectivity in individuals with problematic hypersexual behavior (PHB) has only recently been studied. This study aimed to investigate gray matter deficits and resting-state abnormalities in individuals with PHB using voxel-based morphometry and resting-state connectivity analysis. Seventeen individuals with PHB and 19 age-matched healthy controls participated in this study. Gray matter volume of the brain and resting-state connectivity were measured using 3T magnetic resonance imaging. Compared to healthy subjects, individuals with PHB had significant reductions in gray matter volume in the left superior temporal gyrus (STG) and right middle temporal gyrus. Individuals with PHB also exhibited a decrease in resting-state functional connectivity between the left STG and left precuneus and between the left STG and right caudate. The gray matter volume of the left STG and its resting-state functional connectivity with the right caudate both showed significant negative correlations with the severity of PHB. The findings suggest that structural deficits and resting-state functional impairments in the left STG might be linked to PHB and provide new insights into the underlying neural mechanisms of PHB.
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Affiliation(s)
- Ji-Woo Seok
- Department of Counselling Psychology, Honam University, Gwangju, South Korea; Bioimaging Research Team, Korean Basic Science Institute, Cheongju, South Korea
| | - Jin-Hun Sohn
- Department of Psychology, Brain Research Institute, Chungnam National University, Daejeon, South Korea.
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Yao YW, Liu L, Ma SS, Shi XH, Zhou N, Zhang JT, Potenza MN. Functional and structural neural alterations in Internet gaming disorder: A systematic review and meta-analysis. Neurosci Biobehav Rev 2017; 83:313-324. [PMID: 29102686 DOI: 10.1016/j.neubiorev.2017.10.029] [Citation(s) in RCA: 136] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/06/2017] [Accepted: 10/29/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Yuan-Wei Yao
- State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
| | - Lu Liu
- Institute of Developmental Psychology, Faculty of Psychology, Beijing Normal University, Beijing, 100875, China
| | - Shan-Shan Ma
- State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
| | - Xin-Hui Shi
- State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
| | - Nan Zhou
- Institute of Developmental Psychology, Faculty of Psychology, Beijing Normal University, Beijing, 100875, China
| | - Jin-Tao Zhang
- State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.
| | - Marc N Potenza
- Departments of Psychiatry and Neuroscience and the Child Study Center, Yale University School of Medicine, New Haven, CT, 06519, USA; Connecticut Mental Health Center, New Haven, CT, 06519, USA
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Ruesink GB, Georgiadis JR. Brain Imaging of Human Sexual Response: Recent Developments and Future Directions. CURRENT SEXUAL HEALTH REPORTS 2017; 9:183-191. [PMID: 29225553 PMCID: PMC5711964 DOI: 10.1007/s11930-017-0123-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE OF REVIEW The purpose of this study is to provide a comprehensive summary of the latest developments in the experimental brain study of human sexuality, focusing on brain connectivity during the sexual response. RECENT FINDINGS Stable patterns of brain activation have been established for different phases of the sexual response, especially with regard to the wanting phase, and changes in these patterns can be linked to sexual response variations, including sexual dysfunctions. From this solid basis, connectivity studies of the human sexual response have begun to add a deeper understanding of the brain network function and structure involved. SUMMARY The study of "sexual" brain connectivity is still very young. Yet, by approaching the brain as a connected organ, the essence of brain function is captured much more accurately, increasing the likelihood of finding useful biomarkers and targets for intervention in sexual dysfunction.
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Affiliation(s)
- Gerben B. Ruesink
- Department of Neuroscience (Section Anatomy), University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, Box 196, 9700 AD Groningen, The Netherlands
| | - Janniko R. Georgiadis
- Department of Neuroscience (Section Anatomy), University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, Box 196, 9700 AD Groningen, The Netherlands
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Cacioppo S. Neuroimaging of Female Sexual Desire and Hypoactive Sexual Desire Disorder. Sex Med Rev 2017; 5:434-444. [DOI: 10.1016/j.sxmr.2017.07.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/13/2017] [Accepted: 07/15/2017] [Indexed: 10/18/2022]
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Biundo R, Weis L, Abbruzzese G, Calandra-Buonaura G, Cortelli P, Jori MC, Lopiano L, Marconi R, Matinella A, Morgante F, Nicoletti A, Tamburini T, Tinazzi M, Zappia M, Vorovenci RJ, Antonini A. Impulse control disorders in advanced Parkinson's disease with dyskinesia: The ALTHEA study. Mov Disord 2017; 32:1557-1565. [PMID: 28960475 DOI: 10.1002/mds.27181] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 08/17/2017] [Accepted: 08/23/2017] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Impulse control disorders and dyskinesia are common and disabling complications of dopaminergic treatment in Parkinson's disease. They may coexist and are possibly related. The objectives of this study were to assess the frequency and severity of impulse control disorders in Parkinson's disease patients with dyskinesia. METHODS The ALTHEA study enrolled 251 Parkinson's disease patients with various degrees of dyskinesia severity from 11 movement disorders centers in Italy. Each patient underwent a comprehensive assessment including Unified Dyskinesia Rating Scale and the Questionnaire for Impulsive Compulsive Disorders in Parkinson Disease-Rating Scale. RESULTS There was an overall 55% frequency of impulse control disorder and related behaviors (36% were clinically significant). The positive patients were younger at disease diagnosis and onset and had higher Unified Dyskinesia Rating Scale historical and total score (P = 0.001 and P = 0.02, respectively, vs negative). There was an increased frequency of clinically significant impulse control disorders in patients with severe dyskinesia (P = 0.013), a positive correlation between the questionnaire total score and dopamine agonist dose (P = 0.018), and a trend with levodopa dose. CONCLUSIONS More than half of Parkinson's disease patients with dyskinesia have impulse control disorders and related behaviors, which are frequently clinically significant. Dopaminergic therapy total dose is associated with their severity. Clinicians should carefully assess patients with maladaptive behaviors and dyskinesia because they do not properly evaluate their motor and nonmotor status. © 2017 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Roberta Biundo
- Parkinson and Movement Disorders Unit, IRCCS Hospital San Camillo, Venice, Italy
| | - Luca Weis
- Parkinson and Movement Disorders Unit, IRCCS Hospital San Camillo, Venice, Italy
| | - Giovanni Abbruzzese
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal Child Health, University of Genoa Genoa, Italy
| | - Giovanna Calandra-Buonaura
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.,I.R.C.C.S. Institute of Neurological Sciences of Bologna, Bellaria Hospital, Bologna, Italy
| | - Pietro Cortelli
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.,I.R.C.C.S. Institute of Neurological Sciences of Bologna, Bellaria Hospital, Bologna, Italy
| | | | - Leonardo Lopiano
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Torino, Italy
| | - Roberto Marconi
- Unità Operativa Complessa di Neurologia, Ospedale Misericordia, Grosseto, Italy
| | - Angela Matinella
- Department of Neurological, Neuropsychological, Morphological and Motor Sciences, University of Verona, Italy
| | - Francesca Morgante
- Dipartimento di Medicina Clinica e Sperimentale, Università di Messina, Messina, Italy
| | - Alessandra Nicoletti
- Section of Neurosciences, Department GF Ingrassia, University of Catania, Catania, Italy
| | | | - Michele Tinazzi
- Department of Neuroscience, Biomedicine and Motor Sciences, University of Verona, Italy
| | - Mario Zappia
- Clinica Neurologica I Policlinico Universitario, Catania, Italy
| | - Ruxandra Julia Vorovenci
- University of Medicine and Pharmacy "Victor Babes"; County Hospital, Department of Neurology, Timisoara, Romania
| | - Angelo Antonini
- Parkinson and Movement Disorders Unit, IRCCS Hospital San Camillo, Venice, Italy.,Department of Neuroscience (DNS), University of Padua, Padua, Italy
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Morris LS, To B, Baek K, Chang-Webb YC, Mitchell S, Strelchuk D, Mikheenko Y, Phillips W, Zandi M, Jenaway A, Walsh C, Voon V. Disrupted avoidance learning in functional neurological disorder: Implications for harm avoidance theories. NEUROIMAGE-CLINICAL 2017; 16:286-294. [PMID: 28856091 PMCID: PMC5562176 DOI: 10.1016/j.nicl.2017.08.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/01/2017] [Accepted: 08/07/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Functional neurological disorder (FND) is an elusive disorder characterized by unexplained neurological symptoms alongside aberrant cognitive processing and negative affect, often associated with amygdala reactivity. METHODS We examined the effect of negative conditioning on cognitive function and amygdala reactivity in 25 FND patients and 20 healthy volunteers (HV). Participants were first conditioned to stimuli paired with negative affective or neutral (CS +/CS -) information. During functional MRI, subjects then performed an instrumental associative learning task to avoid monetary losses in the context of the previously conditioned stimuli. We expected that FND patients would be better at learning to avoid losses when faced with negatively conditioned stimuli (increased harm avoidance). Multi-echo resting state fMRI was also collected from the same subjects and a robust denoising method was employed, important for removing motion and physiological artifacts. RESULTS FND subjects were more sensitive to the negative CS + compared to HV, demonstrated by a reinforcement learning model. Contrary to expectation, FND patients were generally more impaired at learning to avoid losses under both contexts (CS +/CS -), persisting to choose the option that resulted in a negative outcome demonstrated by both behavioural and computational analyses. FND patients showed enhanced amygdala but reduced dorsolateral prefrontal cortex responses when they received negative feedback. Patients also had increased resting state functional connectivity between these two regions. CONCLUSIONS FND patients had impaired instrumental avoidance learning, findings that parallel previous observations of impaired action-outcome binding. FND patients further show enhanced behavioural and neural sensitivity to negative information. However, this did not translate to improved avoidance learning. Put together, our findings do not support the theory of harm avoidance in FND. We highlight a potential mechanism by which negative contexts interfere with adaptive behaviours in this under-explored disorder.
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Affiliation(s)
- Laurel S. Morris
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge CB2 3EB, United Kingdom
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, United Kingdom
| | - Benjaman To
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
| | - Kwangyeol Baek
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
| | - Yee-Chien Chang-Webb
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
| | - Simon Mitchell
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
| | - Daniela Strelchuk
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
| | - Yevheniia Mikheenko
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, United Kingdom
| | - Wendy Phillips
- Department of Molecular Neuroscience, UCL Institute of Neurology
| | - Michael Zandi
- Department of Molecular Neuroscience, UCL Institute of Neurology
| | - Allison Jenaway
- Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge, United Kingdom
| | - Cathy Walsh
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
- Department of Molecular Neuroscience, UCL Institute of Neurology
| | - Valerie Voon
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge CB2 3EB, United Kingdom
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, United Kingdom
- NIHR Cambridge Biomedical Research Centre, Cambridge, United Kingdom
- Corresponding author at: Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge CB2 3EB, United Kingdom.
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