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Gilman JM, Kaur J, Tervo-Clemmens B, Potter K, Sanzo BT, Schuster RM, Bjork JM, Evins AE, Roffman JL, Lee PH. Associations between behavioral and self-reported impulsivity, brain structure, and genetic influences in middle childhood. Dev Cogn Neurosci 2024; 67:101389. [PMID: 38749217 PMCID: PMC11112269 DOI: 10.1016/j.dcn.2024.101389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/29/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
Impulsivity undergoes a normative developmental trajectory from childhood to adulthood and is thought to be driven by maturation of brain structure. However, few large-scale studies have assessed associations between impulsivity, brain structure, and genetic susceptibility in children. In 9112 children ages 9-10 from the ABCD study, we explored relationships among impulsivity (UPPS-P impulsive behavior scale; delay discounting), brain structure (cortical thickness (CT), cortical volume (CV), and cortical area (CA)), and polygenic scores for externalizing behavior (PGSEXT). Both higher UPPS-P total scores and more severe delay-discounting had widespread, low-magnitude associations with smaller CA in frontal and temporal regions. No associations were seen between impulsivity and CV or CT. Additionally, higher PGSEXT was associated with both higher UPPS-P scores and with smaller CA and CV in frontal and temporal regions, but in non-overlapping cortical regions, underscoring the complex interplay between genetics and brain structure in influencing impulsivity. These findings indicate that, within large-scale population data, CA is significantly yet weakly associated with each of these impulsivity measures and with polygenic risk for externalizing behaviors, but in distinct brain regions. Future work should longitudinally assess these associations through adolescence, and examine associated functional outcomes, such as future substance use and psychopathology.
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Affiliation(s)
- Jodi M Gilman
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; MGH/HST Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.
| | - Jasmeen Kaur
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA
| | - Brenden Tervo-Clemmens
- Department of Psychiatry & Behavioral Science, Masonic Institute for the Developing Brain, Institute for Translational Neuroscience, University of Minnesota, USA
| | - Kevin Potter
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA
| | - Brandon T Sanzo
- Massachusetts General Hospital (MGH) Psychiatric and Neurodevelopmental Genetics Unit Center for Genomic Medicine, Massachusetts General Hospital (MGH), MA, USA
| | - Randi M Schuster
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - James M Bjork
- Institute for Drug and Alcohol Studies, Virginia Commonwealth University, VA, USA
| | - A Eden Evins
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Joshua L Roffman
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; MGH/HST Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Phil H Lee
- Massachusetts General Hospital (MGH) Department of Psychiatry, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Massachusetts General Hospital (MGH) Psychiatric and Neurodevelopmental Genetics Unit Center for Genomic Medicine, Massachusetts General Hospital (MGH), MA, USA
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2
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Schaub AC, Vogel M, Lang UE, Kaiser S, Walter M, Herdener M, Wrege J, Kirschner M, Schmidt A. Transdiagnostic brain correlates of self-reported trait impulsivity: A dimensional structure-symptom investigation. Neuroimage Clin 2023; 38:103423. [PMID: 37137256 PMCID: PMC10176059 DOI: 10.1016/j.nicl.2023.103423] [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: 01/24/2023] [Revised: 04/25/2023] [Accepted: 04/25/2023] [Indexed: 05/05/2023]
Abstract
Impulsivity transcends psychiatric diagnoses and is often related to anhedonia. This ad hoc cross-sectional investigation explored 1) whether self-reported trait impulsivity mapped onto a common structural brain substrate across healthy controls (HCs) and psychiatric patients, and 2) in a more exploratory fashion, whether impulsivity and anhedonia were related to each other and shared overlapping brain correlates. Structural magnetic resonance imaging (sMRI) datasets from 234 participants including HCs (n = 109) and patients with opioid use disorder (OUD, n = 22), cocaine use disorder (CUD, n = 43), borderline personality disorder (BPD, n = 45) and schizophrenia (SZ, n = 15) were included. Trait impulsivity was measured with the Barratt Impulsiveness Scale (BIS-11) and anhedonia with a subscore of the Beck Depression Inventory (BDI). BIS-11 global score data were available for the entire sample, while data on the BIS-11 2nd order factors attentional, motor and non-planning were additionally in hand for a subsample consisting of HCs, OUD and BPD patients (n = 116). Voxel-based morphometry analyses were conducted for identifying dimensional associations between grey matter volume and impulsivity/anhedonia. Partial correlations were further performed to exploratory test the relationships between impulsivity and anhedonia and their corresponding volumetric brain substrates. Volume of the left opercular part of the inferior frontal gyrus (IFG) was negatively related to global impulsivity across the entire sample and specifically to motor impulsivity in the subsample of HCs, OUD and BPD patients. Across patients anhedonia expression was negatively correlated with left putamen volume. Although there was no relationship between global impulsivity and anhedonia across all patients, only across OUD and BPD patients anhedonia was positively associated with attentional impulsivity. Finally, also across OUD and BPD patients, motor impulsivity associated left IFG volume was positively linked with anhedonia-associated volume in the left putamen. Our findings suggest a critical role of left IFG volume in self-reported global impulsivity across healthy participants and patients with substance use disorder, BPD and SZ. Preliminary findings in OUD and BPD patients further suggests associations between impulsivity and anhedonia that are related to grey matter reductions in the left IFG and putamen.
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Affiliation(s)
| | - Marc Vogel
- University of Basel, Department of Psychiatry (UPK), Basel, Switzerland
| | - Undine E Lang
- University of Basel, Department of Psychiatry (UPK), Basel, Switzerland
| | - Stefan Kaiser
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Switzerland; Division of Adult Psychiatry, Department of Psychiatry, Geneva University Hospitals, Switzerland
| | - Marc Walter
- University of Basel, Department of Psychiatry (UPK), Basel, Switzerland
| | - Marcus Herdener
- Division of Adult Psychiatry, Department of Psychiatry, Geneva University Hospitals, Switzerland
| | - Johannes Wrege
- University of Basel, Department of Psychiatry (UPK), Basel, Switzerland
| | - Matthias Kirschner
- Division of Adult Psychiatry, Department of Psychiatry, Geneva University Hospitals, Switzerland
| | - André Schmidt
- University of Basel, Department of Psychiatry (UPK), Basel, Switzerland.
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3
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Huang MH, Kuan YH, Tu PC, Chang WC, Chan YLE, Su TP. Brain structural abnormalities and trait impulsivity in suicidal and non-suicidal patients with bipolar disorder. J Affect Disord 2023; 333:10-17. [PMID: 37080490 DOI: 10.1016/j.jad.2023.04.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/01/2023] [Accepted: 04/14/2023] [Indexed: 04/22/2023]
Abstract
BACKGROUND Impulsivity is a characteristic of patients with bipolar disorder (BD) and may result in a higher risk of suicide attempt (SA). Although brain structural abnormalities have been suggested in the pathophysiology of BD, the relationship to impulsivity and suicide in BD is still not clear. METHODS 52 euthymic patients with BD (26 of them had a history of SA) and 56 age- and sex-matched healthy controls were recruited. All participants received clinical assessment, including Barratt impulsiveness scale (BIS), and underwent structural magnetic resonance imaging examination. An automated surface-based method (FreeSurfer) was used to measure brain volume and cortical surface area. A general linear model was applied to analyze the association between brain-wise greater gray matter volume (GMV), surface area and BIS scores separately for BD patients with and without SA history. RESULTS BD patients with SA history scored higher in BIS total score and subscores in attention, motor, cognitive complexity and cognitive instability than those without SA history and controls (all p < 0.01). In patients with SA history, higher BIS scores were associated with greater GMV in the left pars triangularis and greater surface area in left pars opercularis (all p < 0.01). BD patients with SA history showed a greater GMV in inferior frontal gyrus than patients without SA history (p < 0.05). LIMITATION The cross-sectional design precluded examination of chronological relationships of SA, brain structural abnormalities, and trait impulsivity among BD. CONCLUSIONS The findings indicate that the prefrontal cortex, especially the left inferior frontal gyrus, plays a vital role in trait impulsivity and suicidal behavior among patients with BD.
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Affiliation(s)
- Mao-Hsuan Huang
- Department of Psychiatry, YuanShan and Suao Branches of Taipei Veterans General Hospital, Ilan, Taiwan; Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Brain Science, National Yang Ming Chao Tung University, Taipei, Taiwan
| | - Yi-Hsuan Kuan
- Institute of Brain Science, National Yang Ming Chao Tung University, Taipei, Taiwan
| | - Pei-Chi Tu
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Philosophy of Mind and Cognition, National Yang-Ming University, Taipei, Taiwan
| | - Wan-Chen Chang
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yee-Lam E Chan
- Department of Psychiatry, General Cheng Hsin Hospital, Taipei, Taiwan
| | - Tung-Ping Su
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Brain Science, National Yang Ming Chao Tung University, Taipei, Taiwan; Department of Psychiatry, General Cheng Hsin Hospital, Taipei, Taiwan.
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4
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Hindley G, Bahrami S, Steen NE, O'Connell KS, Frei O, Shadrin A, Bettella F, Rødevand L, Fan CC, Dale AM, Djurovic S, Smeland OB, Andreassen OA. Characterising the shared genetic determinants of bipolar disorder, schizophrenia and risk-taking. Transl Psychiatry 2021; 11:466. [PMID: 34497263 PMCID: PMC8426401 DOI: 10.1038/s41398-021-01576-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 07/19/2021] [Accepted: 08/18/2021] [Indexed: 02/08/2023] Open
Abstract
Increased risk-taking is a central component of bipolar disorder (BIP) and is implicated in schizophrenia (SCZ). Risky behaviours, including smoking and alcohol use, are overrepresented in both disorders and associated with poor health outcomes. Positive genetic correlations are reported but an improved understanding of the shared genetic architecture between risk phenotypes and psychiatric disorders may provide insights into underlying neurobiological mechanisms. We aimed to characterise the genetic overlap between risk phenotypes and SCZ, and BIP by estimating the total number of shared variants using the bivariate causal mixture model and identifying shared genomic loci using the conjunctional false discovery rate method. Summary statistics from genome wide association studies of SCZ, BIP, risk-taking and risky behaviours were acquired (n = 82,315-466,751). Genomic loci were functionally annotated using FUMA. Of 8.6-8.7 K variants predicted to influence BIP, 6.6 K and 7.4 K were predicted to influence risk-taking and risky behaviours, respectively. Similarly, of 10.2-10.3 K variants influencing SCZ, 9.6 and 8.8 K were predicted to influence risk-taking and risky behaviours, respectively. We identified 192 loci jointly associated with SCZ and risk phenotypes and 206 associated with BIP and risk phenotypes, of which 68 were common to both risk-taking and risky behaviours and 124 were novel to SCZ or BIP. Functional annotation implicated differential expression in multiple cortical and sub-cortical regions. In conclusion, we report extensive polygenic overlap between risk phenotypes and BIP and SCZ, identify specific loci contributing to this shared risk and highlight biologically plausible mechanisms that may underlie risk-taking in severe psychiatric disorders.
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Affiliation(s)
- Guy Hindley
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway.
- Psychosis Studies, Institute of Psychiatry, Psychology and Neurosciences, King's College London, London, UK.
| | - Shahram Bahrami
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Nils Eiel Steen
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Kevin S O'Connell
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Oleksandr Frei
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
- Center for Bioinformatics, Department of Informatics, University of Oslo, Blindern, 0316, Oslo, Norway
| | - Alexey Shadrin
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Francesco Bettella
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Linn Rødevand
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Chun C Fan
- Department of Neurology, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- Multimodal Imaging Laboratory, University of California San Diego, La Jolla, CA, 92093, USA
| | - Anders M Dale
- Department of Neurology, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- Department of Radiology, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Cognitive Science, University of California, San Diego, La Jolla, CA, USA
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Srdjan Djurovic
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
- NORMENT, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Olav B Smeland
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Ole A Andreassen
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway.
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5
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Korponay C, Koenigs M. Gray matter correlates of impulsivity in psychopathy and in the general population differ by kind, not by degree: a comparison of systematic reviews. Soc Cogn Affect Neurosci 2021; 16:683-695. [PMID: 33835168 PMCID: PMC8259272 DOI: 10.1093/scan/nsab045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 01/25/2021] [Accepted: 04/08/2021] [Indexed: 01/02/2023] Open
Abstract
A fundamental question in neuropsychiatry is whether a neurobiological continuum accompanies the behavioral continuum between subclinical and clinical traits. Impulsivity is a trait that varies in the general population and manifests severely in disorders like psychopathy. Is the neural profile of severe impulsivity in psychopathy an extreme but continuous manifestation of that associated with impulsivity in the general population (different by degree)? Or is it discontinuous and unique (different by kind)? Here, we compare systematic reviews of the relationship between impulsivity and gray matter in psychopathy and in the general population. The findings suggest that the neural profile associated with extreme impulsivity in psychopathy (increased gray matter in rostral and ventral striatum and prefrontal cortexes) is distinct from that associated with impulsivity in the general population (decreased gray matter in rostral and ventral prefrontal cortexes). Severe impulsivity in psychopathy may therefore arise from a pathophysiological mechanism that is unique to the disorder. These findings prompt the need for future studies to directly test the effect of group on the impulsivity–gray matter relationship in samples comprised of healthy individuals and individuals with psychopathy. The results caution against the use of community samples to examine impulsive psychopathic traits in relation to neurobiology.
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Affiliation(s)
- Cole Korponay
- Basic Neuroscience Division, McLean Hospital, Belmont, MA 02478, USA.,Department of Psychiatry, Harvard Medical School, Cambridge, MA 02215, USA
| | - Michael Koenigs
- Department of Psychiatry, University of Wisconsin-Madison, Madison, WI 53719, USA
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6
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Lapomarda G, Pappaianni E, Siugzdaite R, Sanfey AG, Rumiati RI, Grecucci A. Out of control: An altered parieto-occipital-cerebellar network for impulsivity in bipolar disorder. Behav Brain Res 2021; 406:113228. [PMID: 33684426 DOI: 10.1016/j.bbr.2021.113228] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 01/28/2021] [Accepted: 03/01/2021] [Indexed: 12/21/2022]
Abstract
Bipolar disorder is an affective disorder characterized by rapid fluctuations in mood ranging from episodes of depression to mania, as well as by increased impulsivity. Previous studies investigated the neural substrates of bipolar disorder mainly using univariate methods, with a particular focus on the neural circuitry underlying emotion regulation difficulties. In the present study, capitalizing on an innovative whole-brain multivariate method to structural analysis known as Source-based Morphometry, we investigated the neural substrates of bipolar disorder and their relation with impulsivity, assessed with both self-report measures and performance-based tasks. Structural images from 46 patients with diagnosis of bipolar disorder and 60 healthy controls were analysed. Compared to healthy controls, patients showed decreased gray matter concentration in a parietal-occipital-cerebellar network. Notably, the lower the gray matter concentration in this circuit, the higher the self-reported impulsivity. In conclusion, we provided new evidence of an altered brain network in bipolar disorder patients related to their abnormal impulsivity. Taken together, these findings extend our understanding of the neural and symptomatic characterization of bipolar disorder.
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Affiliation(s)
- Gaia Lapomarda
- Clinical and Affective Neuroscience Lab, Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy.
| | - Edoardo Pappaianni
- Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Roma Siugzdaite
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Alan G Sanfey
- Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, the Netherlands
| | - Raffaella I Rumiati
- Scuola Internazionale Superiore di Studi Avanzati (SISSA), University of Trieste, Trieste, Italy
| | - Alessandro Grecucci
- Clinical and Affective Neuroscience Lab, Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
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7
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Pan N, Wang S, Zhao Y, Lai H, Qin K, Li J, Biswal BB, Sweeney JA, Gong Q. Brain gray matter structures associated with trait impulsivity: A systematic review and voxel-based meta-analysis. Hum Brain Mapp 2021; 42:2214-2235. [PMID: 33599347 PMCID: PMC8046062 DOI: 10.1002/hbm.25361] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/27/2020] [Accepted: 01/22/2021] [Indexed: 02/05/2023] Open
Abstract
Trait impulsivity is a multifaceted personality characteristic that contributes to maladaptive life outcomes. Although a growing body of neuroimaging studies have investigated the structural correlates of trait impulsivity, the findings remain highly inconsistent and heterogeneous. Herein, we performed a systematic review to depict an integrated delineation of gray matter (GM) substrates of trait impulsivity and a meta‐analysis to examine concurrence across previous whole‐brain voxel‐based morphometry studies. The systematic review summarized the diverse findings in GM morphometry in the past literature, and the quantitative meta‐analysis revealed impulsivity‐related volumetric GM alterations in prefrontal, temporal, and parietal cortices. In addition, we identified the modulatory effects of age and gender in impulsivity‐GM volume associations. The present study advances understanding of brain GM morphometry features underlying trait impulsivity. The findings may have practical implications in the clinical diagnosis of and intervention for impulsivity‐related disorders.
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Affiliation(s)
- Nanfang Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.,Functional & Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China
| | - Song Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.,Functional & Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China
| | - Yajun Zhao
- School of Education and Psychology, Southwest Minzu University, Chengdu, China
| | - Han Lai
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.,Functional & Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China
| | - Kun Qin
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.,Functional & Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China
| | - Jingguang Li
- College of Teacher Education, Dali University, Dali, China
| | - Bharat B Biswal
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, New Jersey, USA.,The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, China
| | - John A Sweeney
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Department of Psychiatry, University of Cincinnati, Cincinnati, Ohio, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.,Functional & Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China
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8
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Miglin R, Bounoua N, Goodling S, Sheehan A, Spielberg JM, Sadeh N. Cortical Thickness Links Impulsive Personality Traits and Risky Behavior. Brain Sci 2019; 9:brainsci9120373. [PMID: 31847131 PMCID: PMC6955970 DOI: 10.3390/brainsci9120373] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 11/16/2022] Open
Abstract
Impulsive personality traits are often predictive of risky behavior, but not much is known about the neurobiological basis of this relationship. We investigated whether thickness of the cortical mantle varied as a function of impulsive traits and whether such variation also explained recent risky behavior. A community sample of 107 adults (ages 18–55; 54.2% men) completed self-report measures of impulsive traits and risky behavior followed by a neuroimaging protocol. Using the three-factor model of impulsive traits derived from the UPPS-P Impulsive Behavior Scale, analysis of the entire cortical mantle identified three thickness clusters that related to impulsive traits. Sensation seeking was negatively related to thickness in the right pericalcarine cortex, whereas impulsive urgency was positively associated with thickness in the left superior parietal and right paracentral lobule. Notably, follow-up analyses showed that thickness in the right pericalcarine cortex also related to recent risky behavior, with the identified cluster mediating the association between sensation seeking and risky behavior. Findings suggest that reduced thickness in the pericalcarine region partially explains the link between sensation seeking and the tendency to engage in risky behavior, providing new insight into the neurobiological basis of these relationships.
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Affiliation(s)
- Rickie Miglin
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE 19713, USA; (N.B.); (A.S.); (J.M.S.)
- Correspondence: (R.M.); (N.S.)
| | - Nadia Bounoua
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE 19713, USA; (N.B.); (A.S.); (J.M.S.)
| | - Shelly Goodling
- Department of Psychology, York College of Pennsylvania, York, PA 17403, USA;
| | - Ana Sheehan
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE 19713, USA; (N.B.); (A.S.); (J.M.S.)
| | - Jeffrey M. Spielberg
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE 19713, USA; (N.B.); (A.S.); (J.M.S.)
| | - Naomi Sadeh
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE 19713, USA; (N.B.); (A.S.); (J.M.S.)
- Correspondence: (R.M.); (N.S.)
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9
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Tegin C, Canan F, El-Mallakh RS. The 2nd to 4th digit ratios (2D:4D) in patients with bipolar disorder. J Affect Disord 2019; 259:27-30. [PMID: 31437697 DOI: 10.1016/j.jad.2019.08.011] [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] [Received: 05/31/2019] [Revised: 08/02/2019] [Accepted: 08/12/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND The ratio of the index finger to the ring finger (2D:4D) is a reflection of the intrauterine hormonal environment and a lower ratio has been shown to be associated with male gender, impulsive behaviors, substance abuse, and aggression. Bipolar illness is characterized by increased impulsivity and increased rates of co-morbid substance abuse, but the 2D:4D ratios have not been examined in this disorder. METHODS We measured digit length of both hands in subjects with bipolar disorder and age- and gender-matched non-bipolar controls (n = 50 in each group). Diagnosis was confirmed with structured diagnostic interviews (MINI) and all subjects also completed Barratt Impulsivity Scale-version 11. RESULTS The patients did not vary significantly from the controls in demographic variables. Subjects with bipolar disorder had a higher right hand 2D:4D ratio compared to controls (0.967 ± .029 vs. 0.953 ± .035, t = 2.18, p = .03). Despite clearly higher measures of impulsivity in the bipolar group, no relationship could be documented between digit ratio and measures of impulsivity in either group. However, the right hand 2D:4D ratios and total impulsivity scores predicted bipolar disorder diagnosis status. LIMITATIONS The predominantly white racial composition of the study sample may limit generalizability to other groups. Only three patients were diagnosed with bipolar type 2, limiting the generalizability of the findings to all bipolar disorder types. CONCLUSIONS The data confirm previous observations of increased measures of impulsivity in euthymic bipolar individuals, and suggest that the mechanism of this increased impulsivity is different than in impulsivity seen in other conditions such as personality disorders.
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Affiliation(s)
- Cuneyt Tegin
- Department of Psychiatry and Behavioral Sciences, University of Louisville School of Medicine, Louisville, KY, USA
| | - Fatih Canan
- The Altshuler Center for Education & Research at Metrocare Services, Dallas, TX, USA; Department of Psychiatry, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Rif S El-Mallakh
- Department of Psychiatry and Behavioral Sciences, University of Louisville School of Medicine, Louisville, KY, USA
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10
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Zsidó AN, Darnai G, Inhóf O, Perlaki G, Orsi G, Nagy SA, Lábadi B, Lénárd K, Kovács N, Dóczi T, Janszky J. Differentiation between young adult Internet addicts, smokers, and healthy controls by the interaction between impulsivity and temporal lobe thickness. J Behav Addict 2019; 8:35-47. [PMID: 30739462 PMCID: PMC7044605 DOI: 10.1556/2006.8.2019.03] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND AIMS Internet addiction is a non-substance-related addiction disorder with progressively growing prevalence. Internet addiction, like substance-related addictions, has been linked with high impulsivity, low inhibitory control, and poor decision-making abilities. Cortical thickness measurements and trait impulsivity have been shown to have a distinct relationship in addicts compared to healthy controls. Thus, we test whether the cortical correlates of trait impulsivity are different in Internet addicts and healthy controls, using an impulsive control group (smokers). METHODS Thirty Internet addicts (15 females) and 60 age- and gender-matched controls (30 smokers, all young adults aged 19-28 years) were scanned using a 3T MRI scanner and completed the Barratt Impulsiveness Scale. RESULTS Internet addicts had a thinner left superior temporal cortex than controls. Impulsivity had a significant main effect on the left pars orbitalis and bilateral insula, regardless of group membership. We identified divergent relationships between trait impulsivity and thicknesses of the bilateral middle temporal, right superior temporal, left inferior temporal, and left transverse temporal cortices between Internet addicts and healthy controls. Further analysis with smokers revealed that the left middle temporal and left transverse temporal cortical thickness change might be exclusive to Internet addiction. DISCUSSION The effects of impulsivity, combined with a long-term exposure to some specific substance or stimuli, might result in different natures of relationships between impulsivity and brain structure when compared to healthy controls. CONCLUSION These results may indicate that Internet addiction is similar to substance-related addictions, such that inefficient self-control could result in maladaptive behavior and inability to resist Internet use.
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Affiliation(s)
- András N. Zsidó
- Institute of Psychology, University of Pécs, Pécs, Hungary,Corresponding author: Andras N. Zsidó; Institute of Psychology, University of Pécs, 6 Ifjusag Street, Pécs, Baranya H 7624, Hungary; Phone/Fax: +36 72 501 516; E-mail:
| | - Gergely Darnai
- Institute of Psychology, University of Pécs, Pécs, Hungary,Department of Neurology, Medical School, University of Pécs, Pécs, Hungary,MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary
| | - Orsolya Inhóf
- Institute of Psychology, University of Pécs, Pécs, Hungary
| | - Gábor Perlaki
- MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary,Pécs Diagnostic Centre, Pécs, Hungary,Department of Neurosurgery, Medical School, University of Pécs, Pécs, Hungary
| | - Gergely Orsi
- MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary,Pécs Diagnostic Centre, Pécs, Hungary,Department of Neurosurgery, Medical School, University of Pécs, Pécs, Hungary
| | - Szilvia Anett Nagy
- MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary,Pécs Diagnostic Centre, Pécs, Hungary,Department of Neurosurgery, Medical School, University of Pécs, Pécs, Hungary,MTA-PTE Neurobiology of Stress Research Group, Szentágothai Research Center, Pécs, Hungary
| | - Beatrix Lábadi
- Institute of Psychology, University of Pécs, Pécs, Hungary
| | - Kata Lénárd
- Institute of Psychology, University of Pécs, Pécs, Hungary
| | - Norbert Kovács
- Department of Neurology, Medical School, University of Pécs, Pécs, Hungary,MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary
| | - Tamás Dóczi
- MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary,Department of Neurosurgery, Medical School, University of Pécs, Pécs, Hungary
| | - József Janszky
- Department of Neurology, Medical School, University of Pécs, Pécs, Hungary,MTA-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary
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11
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Impulsivity and its association with childhood trauma experiences across bipolar disorder, attention deficit hyperactivity disorder and borderline personality disorder. J Affect Disord 2019; 244:33-41. [PMID: 30336349 DOI: 10.1016/j.jad.2018.07.060] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/22/2018] [Accepted: 07/22/2018] [Indexed: 01/14/2023]
Abstract
BACKGROUND Impulsivity is a core feature of the attention-deficit/hyperactivity disorder (ADHD) and is one of the DSM-V diagnostic criteria for borderline personality disorder (BPD). Impulsivity is also present in bipolar disorder (BD). Impulsivity has been linked to adverse behavior (suicidality,…) and to traumatic childhood experiences. Our study explored impulsivity in BPD, BD, ADHD and healthy controls (CTRL) and investigated the impact of early trauma on impulsivity. METHODS 744 patients with BD (n = 276), BPD (n = 168), ADHD (n = 173) or a combination (BPD_BD, n = 29; BPD_ADHD, n = 94, BD_BPD_ADHD n = 13) and 47 controls were included. All subjects were completed the Baratt Impulsivity Scale (BIS-10) and the Childhood Trauma Questionnaire (CTQ). RESULTS BD reported the same levels of impulsiveness as CTRL. When BPD and BD are co-morbid, impulsivity increased to reach the level of BPD. Impulsiveness was significantly associated to traumatic childhood event for BD and CTRL, not for BPD and AHDH. LIMITATIONS Impulsivity was assessed on the basis of a self-report questionnaire and not by the mean of an objective measure such as a neuropsychological test. Moreover, we don't know what treatment our pathological subjects were receiving. But, ADHD and BPD, despite the probable treatment, were more impulsive than healthy CTRLs who did not take medications. CONCLUSIONS Impulsivity is probably not a feature of BD but is associated with the presence of traumatic childhood experiences, especially for euthymic patients, unlike BPD and ADHD. So, it seems essential to assess the presence of early trauma to reduce the impulsivity and improve the evolution of BD.
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12
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Merz EC, He X, Noble KG. Anxiety, depression, impulsivity, and brain structure in children and adolescents. NEUROIMAGE-CLINICAL 2018; 20:243-251. [PMID: 30094172 PMCID: PMC6080576 DOI: 10.1016/j.nicl.2018.07.020] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/27/2018] [Accepted: 07/21/2018] [Indexed: 01/03/2023]
Abstract
The unique neuroanatomical underpinnings of internalizing symptoms and impulsivity during childhood are not well understood. In this study, we examined associations of brain structure with anxiety, depression, and impulsivity in children and adolescents. Participants were 7- to 21-year-olds (N = 328) from the Pediatric Imaging, Neurocognition, and Genetics (PING) study who completed high-resolution, 3-Tesla, T1-weighted MRI and self-report measures of anxiety, depression, and/or impulsivity. Cortical thickness and surface area were examined across cortical regions-of-interest (ROIs), and exploratory whole-brain analyses were also conducted. Gray matter volume (GMV) was examined in subcortical ROIs. When considered separately, higher depressive symptoms and impulsivity were each significantly associated with reduced cortical thickness in ventromedial PFC/medial OFC, but when considered simultaneously, only depressive symptoms remained significant. Higher impulsivity, but not depressive symptoms, was associated with reduced cortical thickness in the frontal pole, rostral middle frontal gyrus, and pars orbitalis. No differences were found for regional surface area. Higher depressive symptoms, but not impulsivity, were significantly associated with smaller hippocampal GMV and larger pallidal GMV. There were no significant associations between anxiety symptoms and brain structure. Depressive symptoms and impulsivity may be linked with cortical thinning in overlapping and distinct regions during childhood and adolescence. Internalizing problems and impulsivity may have shared and distinct neuroanatomical substrates in childhood. Higher depressive symptoms were uniquely associated with reduced cortical thickness in vmPFC/medial OFC. Higher impulsivity was uniquely associated with reduced cortical thickness in lateral PFC regions. Higher depressive symptoms were associated with smaller hippocampal volume and larger pallidal volume. These shared and distinct neuroanatomical correlates may inform the design of prevention and intervention strategies.
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Affiliation(s)
- Emily C Merz
- Department of Biobehavioral Sciences, Teachers College, Columbia University, 525 W. 120th St., New York, NY 10027, United States.
| | - Xiaofu He
- Department of Psychiatry, Columbia University Medical Center, New York State Psychiatric Institute, 1051 Riverside Drive, Unit 43, Rm. 5221, New York, NY 10032, United States.
| | - Kimberly G Noble
- Department of Biobehavioral Sciences, Teachers College, Columbia University, 525 W. 120th St., New York, NY 10027, United States.
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13
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Yang CC, Völlm B, Khalifa N. The Effects of rTMS on Impulsivity in Normal Adults: a Systematic Review and Meta-Analysis. Neuropsychol Rev 2018; 28:377-392. [DOI: 10.1007/s11065-018-9376-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 04/18/2018] [Indexed: 02/08/2023]
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14
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Association between self-reported impulsiveness and gray matter volume in healthy adults. An exploratory MRI study. Neurosci Lett 2018; 674:112-116. [DOI: 10.1016/j.neulet.2018.03.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/19/2018] [Accepted: 03/18/2018] [Indexed: 12/20/2022]
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15
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Bakolis I, Hammoud R, Smythe M, Gibbons J, Davidson N, Tognin S, Mechelli A. Urban Mind: Using Smartphone Technologies to Investigate the Impact of Nature on Mental Well-Being in Real Time. Bioscience 2018; 68:134-145. [PMID: 29599549 PMCID: PMC5862247 DOI: 10.1093/biosci/bix149] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Existing evidence on the beneficial effects of nature on mental health comes from studies using cross-sectional designs. We developed a smartphone-based tool (Urban Mind; www.urbanmind.info) to examine how exposure to natural features within the built environment affects mental well-being in real time. The tool was used to monitor 108 individuals who completed 3013 assessments over a 1-week period. Significant immediate and lagged associations with mental well-being were found for several natural features. These associations were stronger in people with higher trait impulsivity, a psychological measure of one's tendency to behave with little forethought or consideration of the consequences, which is indicative of a higher risk of developing mental-health issues. Our investigation suggests that the benefits of nature on mental well-being are time-lasting and interact with an individual's vulnerability to mental illness. These findings have potential implications from the perspectives of global mental health as well as urban planning and design.
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Affiliation(s)
- Ioannis Bakolis
- Lecturer, PhD student at the Institute of Psychiatry, Psychology and Neuroscience at King's College London, United Kingdom
| | - Ryan Hammoud
- PhD student at the Institute of Psychiatry, Psychology and Neuroscience at King's College London, United Kingdom
| | - Michael Smythe
- Artist and action-based researcher at Nomad Projects (https://nomadprojects.org) in London, United Kingdom
| | - Johanna Gibbons
- Landscape architects at J & L Gibbons (http://jlg-london.com) in London, United Kingdom
| | - Neil Davidson
- Landscape architects at J & L Gibbons (http://jlg-london.com) in London, United Kingdom
| | - Stefania Tognin
- Lecturer, PhD student at the Institute of Psychiatry, Psychology and Neuroscience at King's College London, United Kingdom
| | - Andrea Mechelli
- Reader, PhD student at the Institute of Psychiatry, Psychology and Neuroscience at King's College London, United Kingdom
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