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Parvizi-Wayne D, Severs L. When the interoceptive and conceptual clash: The case of oppositional phenomenal self-modelling in Tourette syndrome. COGNITIVE, AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2024; 24:660-680. [PMID: 38777988 PMCID: PMC11233343 DOI: 10.3758/s13415-024-01189-6] [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] [Accepted: 04/15/2024] [Indexed: 05/25/2024]
Abstract
Tourette syndrome (TS) has been associated with a rich set of symptoms that are said to be uncomfortable, unwilled, and effortful to manage. Furthermore, tics, the canonical characteristic of TS, are multifaceted, and their onset and maintenance is complex. A formal account that integrates these features of TS symptomatology within a plausible theoretical framework is currently absent from the field. In this paper, we assess the explanatory power of hierarchical generative modelling in accounting for TS symptomatology from the perspective of active inference. We propose a fourfold analysis of sensory, motor, and cognitive phenomena associated with TS. In Section 1, we characterise tics as a form of action aimed at sensory attenuation. In Section 2, we introduce the notion of epistemic ticcing and describe such behaviour as the search for evidence that there is an agent (i.e., self) at the heart of the generative hierarchy. In Section 3, we characterise both epistemic (sensation-free) and nonepistemic (sensational) tics as habitual behaviour. Finally, in Section 4, we propose that ticcing behaviour involves an inevitable conflict between distinguishable aspects of selfhood; namely, between the minimal phenomenal sense of self-which is putatively underwritten by interoceptive inference-and the explicit preferences that constitute the individual's conceptual sense of self. In sum, we aim to provide an empirically informed analysis of TS symptomatology under active inference, revealing a continuity between covert and overt features of the condition.
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Affiliation(s)
- D Parvizi-Wayne
- Department of Psychology, Royal Holloway University of London, London, UK.
| | - L Severs
- Centre for the Philosophy of Science, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
- Ruhr-Universität Bochum, Institute of Philosophy II, Bochum, Germany
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Barber KE, Ding Q, Espil FM, Woods DW, Specht MW, Bennett SM, Stiede JT, Walkup JT, Ricketts EJ, McGuire JF, Peterson AL, Compton SN, Wilhelm S, Scahill L, Piacentini JC. Contextual Triggers and Tic Severity Across Life Periods: A Retrospective Analysis in Adults with Tic Disorders. Child Psychiatry Hum Dev 2024:10.1007/s10578-024-01733-y. [PMID: 38976153 DOI: 10.1007/s10578-024-01733-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/18/2024] [Indexed: 07/09/2024]
Abstract
In tic disorders (TD), tic expression varies across the lifespan and as a function of contextual factors. This study explored connections between tic expression and contextual triggers across life periods in 74 adults (Mage = 23.2) with TDs. The Tic History and Coping Strategies form assessed retrospective self-reports of contextual antecedents, consequences, and tic severity during four life periods (middle school; 9th/10th grade; 11th/12th grade; college/work) and past month. Tics reportedly worsened during and after school in school-aged years and worsened in the evening during college/work years. Stress and anxiety were reported to consistently trigger tics across time. The impact of activities, places, and emotions did not differ across life periods. Attention-based consequences, most prevalent during middle school, were more common than escape- or avoidance-related consequences across all periods. Findings illuminate how contextual factors may influence tics across life periods and underscore the consistent impact of tic-triggering emotions and attention-related consequences.
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Affiliation(s)
- Kathryn E Barber
- Department of Psychology, Marquette University, Milwaukee, WI, USA
| | - Qiang Ding
- Department of Psychological Medicine, Children's Hospital of Fudan University Shanghai, Shanghai, PR China
| | - Flint M Espil
- Department of Psychiatry, Stanford University, Stanford, CA, USA
| | - Douglas W Woods
- Department of Psychology, Marquette University, Milwaukee, WI, USA.
- Department of Psychology, Loyola University of Chicago, Chicago, IL, USA.
| | - Matthew W Specht
- Connecticut OCD, Anxiety, and Tic Specialists, Greenwich, CT, USA
| | | | | | - John T Walkup
- Department of Psychiatry and Behavioral Health, Lurie Children's, Chicago, IL, USA
| | - Emily J Ricketts
- Department of Neuroscience, UCLA Semel Institute, Los Angeles, CA, USA
| | - Joseph F McGuire
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins Medicine, Baltimore, MD, USA
| | - Alan L Peterson
- Department of Psychiatry & Behavioral Sciences, University of Texas San Antonio, San Antonio, TX, USA
| | - Scott N Compton
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA
| | - Sabine Wilhelm
- Harvard University School of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | | | - John C Piacentini
- Department of Child & Adolescent Psychiatry, UCLA Semel Institute, Los Angeles, CA, USA
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Tan CY, Chiu NC, Zeng YH, Huang JY, Tzang RF, Chen HJ, Lin YJ, Sun FJ, Ho CS. Psychosocial stress in children with Tourette syndrome and chronic tic disorder. Pediatr Neonatol 2024; 65:336-340. [PMID: 38000929 DOI: 10.1016/j.pedneo.2023.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 04/21/2023] [Accepted: 06/16/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND This study aimed to understand the longitudinal relationship between psychosocial stress with tic exacerbation in children with Tourette syndrome (TS) and chronic tic disorder. METHODS Consecutive ratings of tic severity as well as child and parental reports of psychosocial stress were obtained for 373 children (296 males, 77 females; mean age 9y 5mo; SD 3y 3mo) with TS and chronic tic disorder between January 2018 and December 2020. The Yale Global Tic Severity Scale (YGTSS) global severity score, total tic score, and impairment rating were calculated. The stressful events and YGTSS measurements were used and treated as time-varying variables in the analyses. Models that controlled for non-independence among the repeated observations using a random intercept and random slope model were employed. Each participant was treated as a random factor in the modelling. RESULTS Family-related stress, personal relationship stress and school-related stress were independently associated with increasing YGTSS global severity, total tic score, and impairment rating over time. An increased number of stressful events were associated with increased severity of tics. CONCLUSION Family, personal relationships, and school-related stress were consistently associated with the exacerbation of tics. Managing these stressful events is important in the treatment of TS and chronic tic disorder.
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Affiliation(s)
- Chiew Yin Tan
- Division of Pediatric Neurology, Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; Department of Pediatrics, Taitung Hospital, Ministry of Health and Welfare, Taiwan
| | - Nan-Chang Chiu
- Division of Pediatric Neurology, Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; The Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Yi-Hong Zeng
- The Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Division of Endocrinology and Metabolism, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - Jia-Yun Huang
- Division of Pediatric Neurology, Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
| | - Ruu-Fen Tzang
- The Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Psychiatry, Mackay Memorial Hospital, Taipei, Taiwan; MacKay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan
| | - Hui-Ju Chen
- Division of Pediatric Neurology, Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; The Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Yi-Jie Lin
- Division of Pediatric Neurology, Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; The Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Fang-Ju Sun
- MacKay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan; Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Che-Sheng Ho
- Division of Pediatric Neurology, Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; The Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.
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Wang CX, Wang B, Sun JJ, Xiao CY, Ma H, Jia FY, Li HH. Circulating retinol and 25(OH)D contents and their association with symptoms in children with chronic tic disorders. Eur Child Adolesc Psychiatry 2024; 33:1017-1028. [PMID: 37166521 PMCID: PMC11032271 DOI: 10.1007/s00787-023-02226-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 05/04/2023] [Indexed: 05/12/2023]
Abstract
The present study measured serum levels of vitamin A (VA) and vitamin D (VD) in children with chronic tic disorders (CTD) and investigated their potential association with CTD and comorbidity of attention deficit hyperactivity disorder (ADHD) and the association of their co-insufficiencies or deficiencies with CTD symptoms. A total of 176 children (131 boys and 45 girls, median age of 9 years) with CTD were recruited as the CTD group. During the same period, 154 healthy children were selected as the healthy control (HC) cohort. Circulating retinol and 25-hydroxyvitamin D (25[OH]D) levels were measured for all participants using high-performance liquid chromatography (HPLC) and tandem mass spectrometry. The Yale Global Tic Severity Scale (YGTSS) was employed for the assessment of tic status and CTD impairment. The Swanson, Nolan, and Pelham Rating Scale (SNAP-IV) and the Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) were used to evaluate comorbidity symptoms. CTD pediatric participants exhibited markedly diminished circulating retinol and 25(OH)D levels compared to HCs. Moreover, VA and VD deficiencies and their co-insufficiencies/deficiencies were more prevalent in CTD participants than HCs. Circulating 25(OH)D levels were inversely proportional to the YGTSS motor tic scores. YGTSS scores in CTD children with only VA or VD insufficiency or deficiency or with VA and VD co-insufficiency/deficiency did not differ from those in CTD children with normal VA and VD. CTD children with comorbid ADHD displayed reduced circulating retinol and 25(OH)D concentrations and elevated prevalence of VD deficiency compared to CTD participants without comorbid ADHD. Lower serum retinol content was intricately linked to the presence of elevated CTD and comorbid ADHD. VA and VD deficiencies and their co-insufficiencies/deficiencies were markedly enhanced in CTD pediatric participants compared to HCs. Lower VA concentration was linked to the presence of enhanced CTD and comorbid ADHD. Therefore, children with CTD, especially with comorbid ADHD, may be at a higher risk of VA or VD deficiency, which may prompt the clinicians to consider whether blood tests for VA and VD in CTD children would be helpful for clinical care.
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Affiliation(s)
- Cheng-Xin Wang
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130021, China
| | - Bing Wang
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Jian-Jian Sun
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Chun-Ying Xiao
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Huan Ma
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Fei-Yong Jia
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Hong-Hua Li
- Department of Developmental and Behavioral Pediatrics, The First Hospital of Jilin University, Changchun, 130021, Jilin, China.
- School of Public Health, Jilin University, Changchun, Jilin, China.
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Schneider AL. Putative Mechanism of Action of Trazodone-Related Oromandibular Dyskinesia. Case Rep Psychiatry 2024; 2024:5543023. [PMID: 38585414 PMCID: PMC10999284 DOI: 10.1155/2024/5543023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/11/2024] [Accepted: 03/23/2024] [Indexed: 04/09/2024] Open
Abstract
This is a case report of three cases of trazodone-induced buccal-lingual dyskinesias. Each case demonstrated the distinct pattern of the development of this dyskinesia after trazodone exposure for several months. All cases showed abrupt cessation of the movement disorder when the drug was discontinued. One of the three cases demonstrated a highly unusual presentation of an on/off pattern of buccal dyskinesia directly related to repetitive exposure and termination of the drug trazodone. Two of the three cases had no prior exposure to any dopamine blocking agents. One of the three had a distant exposure to a dopamine antagonist. As opposed to other antidepressants, trazodone has a mechanism of action which can account for both the development and treatment of dyskinetic movements. Its metabolite, M/chlorophenylpiperazine (M-CPP) is a 5HT2C agonist capable of causing abnormal oral-facial movements in rodent models. The presence of oromandibular dyskinetic movements can occur spontaneously with age, with trazodone being a potential predisposing factor. This article will discuss proposed mechanisms for trazodone's action with an emphasis on case reports of dystonic movements.
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Affiliation(s)
- Alan L. Schneider
- University of Southern California Keck School of Medicine, Los Angeles, CA, USA
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Ramsey KA, McGuire JF. Advancements in the phenomenology, assessment, and treatment of Tourette syndrome. Curr Opin Psychiatry 2024; 37:57-64. [PMID: 38226540 PMCID: PMC10922452 DOI: 10.1097/yco.0000000000000922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
PURPOSE OF REVIEW Tourette syndrome (TS) and chronic tic disorders, collectively referred to as TS, are relatively common childhood onset neuropsychiatric conditions associated with functional impairment and distress. Over the past several years, clinical research has contributed to the advancement of the field's understanding of mechanisms and clinical correlates of TS. This progress has led to the development of key assessment tools and the implementation of novel interventions for individuals with TS. RECENT FINDINGS This article provides a review of innovative TS research focusing on four key themes: investigation of clinical phenomenology of TS; validation of assessment tools for TS; dissemination of current evidence-based treatments for TS; and exploration of new intervention programs. SUMMARY Cumulatively, this growing body of work presents considerable progress and provides a path forward to improve the assessment and treatment of TS.
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Affiliation(s)
- Kesley A Ramsey
- Division of Child and Adolescent Psychiatry, Johns Hopkins University School of Medicine
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Sapozhnikov Y, Vermilion J. Co-Occurring Anxiety in Youth with Tic Disorders: A Review. J Child Adolesc Psychopharmacol 2023; 33:402-408. [PMID: 37870770 DOI: 10.1089/cap.2022.0091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Objective: To review the current state of the literature regarding anxiety symptoms and anxiety disorders in chronic tic disorder (CTD). Results: We conducted a literature search on anxiety and tic disorders. Anxiety symptoms and anxiety disorders are common in youth with CTD, with ∼30%-50% of youth with CTD having at least one co-occurring anxiety disorder. Tics often improve by young adulthood but anxiety symptoms tend to persist, or worsen, over time. Anxiety and tics are closely related, but the exact nature of their relationship is poorly understood. We discuss some potential ways in which anxiety and tics are linked with an emphasis on the underlying brain circuitry involved. The relationship between anxiety and tics may be related to the premonitory urge. In addition, stress hormones may link anxiety and tics. Individuals with CTD have greater activation of their hypothalamic-pituitary-adrenal system in response to acute stress. We also review the impact of anxiety on youth with CTD and approaches to management of anxiety in youth. Conclusions: Anxiety is common in youth with CTD, is associated with more severe CTD, and can adversely affect a child's function. Thus, it is important to identify anxiety disorders in CTD and manage them appropriately.
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Affiliation(s)
- Yelizaveta Sapozhnikov
- Department of Neurology, University of Rochester Medical Center, Rochester, New York, USA
| | - Jennifer Vermilion
- Department of Neurology, University of Rochester Medical Center, Rochester, New York, USA
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Che G, Ren W, McGuire JF, Li P, Zhao Z, Tian J, Zhang J, Zhang Y. Clinical evaluation of premonitory urges in children and adolescents using the Chinese version of Individualized Premonitory Urge for Tics Scale. Front Psychiatry 2023; 14:1224825. [PMID: 38034925 PMCID: PMC10687167 DOI: 10.3389/fpsyt.2023.1224825] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 10/10/2023] [Indexed: 12/02/2023] Open
Abstract
Background Premonitory urges (PUs) have been the focus of recent efforts to assess the severity and develop interventions for tic disorders (TD). We aimed to investigate the PUs in TD and its comorbidities from multiple dimensions, using the Chinese version of the Premonitory Urge for Tics Scale (C-PUTS) and the Chinese version of the Individualized Premonitory Urge for Tics Scale (C-IPUTS), in order to provide perspectives for the diagnosis and management of TD in children and adolescents. Methods A total of 123 cases were included in the study. The IPUTS was translated, back-translated, culturally adjusted, and pre-investigated to determine the items of the C-IPUTS. The reliability and validity of the C-IPUTS scale were evaluated by a questionnaire survey on children and adolescents with TD at the Developmental Pediatrics Department of the Second Hospital of Jilin University. Meanwhile, the C-PUTS, which had been evaluated and used in China, Yale Global Tic Severity Scale (YGTSS), Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), Depression Self-Rating Scale (DSRS), Screen for Childhood Anxiety-Related Disorders (SCARED), Achenbach Child Behavior Checklist (CBCL), and Swanson, Nolan and Pelham, Version IV (SNAP-IV), were used to assess the association of PUs with tics and comorbidities of TD. Results All dimensions of the C-IPUTS demonstrated good reliability and validity. Our findings suggested that PUs in children and adolescents in China occurred primarily at the head/face and neck/throat. The different dimensions of the C-IPUTS (number, frequency, and intensity) and C-PUTS were positively correlated with the YGTSS total score, while the C-PUTS was positively correlated with the Y-BOCS, SCARED, DSRS, and SNAP-IV scale total scores. The three dimensions of the C-IPUTS demonstrated correlations with anxiety severity and obsessive-compulsive symptoms. Conclusion The C-IPUTS can be used to assess PUs reliably and effectively and provide further information for the C-PUTS from various dimensions in a Chinese setting. PUs relate to obsessive-compulsive symptoms, anxiety, attention deficit hyperactivity, and behavioral problems in children and adolescents with TDs. Accordingly, PUs evaluation using the C-IPUTS combined with the PUTS might provide useful information for future therapies for TDs to achieve greater tic reduction.
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Affiliation(s)
- Guanghua Che
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
- Pediatrics Centre, The Second Hospital of Jilin University, Changchun, China
| | - Wenjing Ren
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Joseph F. McGuire
- Center for Obsessive-Compulsive Disorder (OCD), Anxiety, and Related Disorders for Children, Division of Child and Adolescent Psychiatry, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Ping Li
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Zhiruo Zhao
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Jing Tian
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Jinyuan Zhang
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Yue Zhang
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
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Kara MZ, Kul M. Can Red Blood Cell and Platelet Parameters Be Associated With Inflammation in Children With Tic Disorder? Cureus 2023; 15:e47280. [PMID: 37881325 PMCID: PMC10594065 DOI: 10.7759/cureus.47280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2023] [Indexed: 10/27/2023] Open
Abstract
OBJECTIVE Tic disorder (TD) is one of the neurodevelopmental disorders and its etiology has not been fully elucidated. Complete blood count (CBC) values have been used as indicators of a systemic inflammatory response. In our study, we aimed to assess hemogram parameters in drug-naive, comorbidity-free children with TD compared with controls. METHODS This retrospective study included 62 drug-naive children with TD who had undergone CBC within one month prior to the study. A control group of 48 healthy children, matched for age and gender, without any organic or psychiatric disorders, was included. Statistical analysis was performed by using IBM SPSS Statistics for Windows, Version 22.0 (Released 2013; IBM Corp., Armonk, New York, United States). Results: Hematocrit (p = 0.044), mean corpuscular volume (p = 0.002), platelet count (p = 0.011), and plateletcrit (p = 0.031) values were significantly higher in the TD group, whereas mean corpuscular hemoglobin concentration (p = 0.00) was significantly lower in the TD group. Additionally, a significant negative correlation was observed between the duration of illness and platelet (p = 0.05, r=-0.282), plateletcrit (p = 0.038, r = -0.295), and neutrophil count (p = 0.006, r = -0.391), while a positive correlation was found between the duration of illness and eosinophil count (p = 0.018, r = 0.336). CONCLUSION The results revealed several significant differences in hemogram parameters between TD patients and the control group. These may suggest the role of inflammation and/or other underlying mechanisms in TD and may inspire new studies. Future studies with larger and more homogeneous samples, including comprehensive inflammatory markers, may contribute to a deeper understanding of the relationship between inflammation and TD.
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Affiliation(s)
- Mahmut Zabit Kara
- Child and Adolescent Psychiatry, University of Health Sciences, Antalya Training and Research Hospital, Antalya, TUR
| | - Müslüm Kul
- Child and Adolescent Psychiatry, Mersin City Training and Research Hospital, Mersin, TUR
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Yang C, Zhang J, Zhao Q, Zhang J, Zhou J, Wang L. Trends of Tourette Syndrome in children from 2011 to 2021: A bibliometric analysis. Front Behav Neurosci 2022; 16:991805. [DOI: 10.3389/fnbeh.2022.991805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/27/2022] [Indexed: 11/18/2022] Open
Abstract
ObjectiveAnalyze the research status of Tourette Syndrome (TS) in children by CiteSpace and determine the current research hotspots and frontiers.Materials and methodsWe chose publications indexed in the Web of Science Core Collection (WoSCC) database for studies related to TS in children from 2011 to 2021. We built online cooperation maps of countries/regions, institutions, authors, journals, references, and keywords by CiteSpace, and identified hotspots and frontiers of study for children’s TS.ResultsA total of 1,232 publications about TS in children were downloaded from the WoSCC. The USA (414) was the country with the highest rate of production, and University College London (87) was the institution that had the highest publication rate. Andrea Eugenio Cavanna was the most prolific author (39 papers). There was inactive cooperation between institutions, countries/regions, and authors. The Journal of European Child & Adolescent Psychiatry was the most active journal. Hot topics focused on epidemiology, comorbidities, deep brain stimulation, behavioral therapy, basal ganglia, pharmacological treatment, and risk factors of TS in children.ConclusionAccording to the CiteSpace results, this study found that authors, countries/regions, and institutions were not actively working together. Current research hotspots mainly consist of epidemiology, comorbidities, deep brain stimulation, behavior therapy, and basal ganglia. The main research trends include comorbidities, pharmacological treatment, and risk factors. Therefore, international cooperation should be strengthened in the future, and it should be mindful of the psychiatric comorbidities of TS, the choice of intervention measures, and early warning of risk factors.
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Leisman G, Melillo R. Front and center: Maturational dysregulation of frontal lobe functional neuroanatomic connections in attention deficit hyperactivity disorder. Front Neuroanat 2022; 16:936025. [PMID: 36081853 PMCID: PMC9446472 DOI: 10.3389/fnana.2022.936025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/29/2022] [Indexed: 12/21/2022] Open
Abstract
Frontal lobe function may not universally explain all forms of attention deficit hyperactivity disorder (ADHD) but the frontal lobe hypothesis described supports an internally consistent model for integrating the numerous behaviors associated with ADHD. The paper examines the developmental trajectories of frontal and prefrontal lobe development, framing ADHD as maturational dysregulation concluding that the cognitive, motor, and behavioral abilities of the presumptive majority of ADHD children may not primarily be disordered or dysfunctional but reflect maturational dysregulation that is inconsistent with the psychomotor and cognitive expectations for the child’s chronological and mental age. ADHD children demonstrate decreased activation of the right and middle prefrontal cortex. Prefrontal and frontal lobe regions have an exuberant network of shared pathways with the diencephalic region, also having a regulatory function in arousal as well as with the ascending reticular formation which has a capacity for response suppression to task-irrelevant stimuli. Prefrontal lesions oftentimes are associated with the regulatory breakdown of goal-directed activity and impulsivity. In conclusion, a presumptive majority of childhood ADHD may result from maturational dysregulation of the frontal lobes with effects on the direct, indirect and/or, hyperdirect pathways.
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Affiliation(s)
- Gerry Leisman
- Movement and Cognition Laboratory, Department of Physical Therapy, University of Haifa, Haifa, Israel
- Department of Neurology, University of Medical Sciences of Havana, Havana, Cuba
- *Correspondence: Gerry Leisman,
| | - Robert Melillo
- Movement and Cognition Laboratory, Department of Physical Therapy, University of Haifa, Haifa, Israel
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