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Desfossés-Vallée S, Leclerc JB, Blanchet P, O’Connor KP, Lavoie ME. Comparing the 'When' and the 'Where' of Electrocortical Activity in Patients with Tourette Syndrome, Body-Focused Repetitive Behaviors, and Obsessive Compulsive Disorder. J Clin Med 2024; 13:2489. [PMID: 38731020 PMCID: PMC11084402 DOI: 10.3390/jcm13092489] [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: 03/21/2024] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 05/13/2024] Open
Abstract
Background/Objectives: Tourette Syndrome (TS), Obsessive Compulsive Disorder (OCD), and Body-Focused Repetitive Behaviors (BFRB) are three disorders that share many similarities in terms of phenomenology, neuroanatomy, and functionality. However, despite the literature pointing toward a plausible spectrum of these disorders, only a few studies have compared them. Studying the neurocognitive processes using Event-Related Potentials (ERPs) offers the advantage of assessing brain activity with excellent temporal resolution. The ERP components can then reflect specific processes known to be potentially affected by these disorders. Our first goal is to characterize 'when' in the processing stream group differences are the most prominent. The second goal is to identify 'where' in the brain the group discrepancies could be. Methods: Participants with TS (n = 24), OCD (n = 18), and BFRB (n = 16) were matched to a control group (n = 59) and were recorded with 58 EEG electrodes during a visual counting oddball task. Three ERP components were extracted (i.e., P200, N200, and P300), and generating sources were modelized with Standardized Low-Resolution Electromagnetic Tomography. Results: We showed no group differences for the P200 and N200 when controlling for anxiety and depressive symptoms, suggesting that the early cognitive processes reflected by these components are relatively intact in these populations. Our results also showed a decrease in the later anterior P300 oddball effect for the TS and OCD groups, whereas an intact oddball effect was observed for the BFRB group. Source localization analyses with sLORETA revealed activations in the lingual and middle occipital gyrus for the OCD group, distinguishing it from the other two clinical groups and the controls. Conclusions: It seems that both TS and OCD groups share deficits in anterior P300 activation but reflect distinct brain-generating source activations.
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Affiliation(s)
- Sarah Desfossés-Vallée
- Laboratoire de Psychophysiologie Cognitive et Sociale, Montréal, QC H1N 3J4, Canada;
- Centre de Recherche de l’Institut Universitaire en Santé Mentale de Montréal, Montréal, QC H1N 3J4, Canada; (J.B.L.); (P.B.); (K.P.O.)
- Département de Psychologie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Julie B. Leclerc
- Centre de Recherche de l’Institut Universitaire en Santé Mentale de Montréal, Montréal, QC H1N 3J4, Canada; (J.B.L.); (P.B.); (K.P.O.)
- Département de Psychologie, Université du Québec à Montréal, Montréal, QC H2X 3P2, Canada
- Centre de Recherche CIUSSS du Nord-de-l’île-de-Montréal, Montréal, QC H4J 1C5, Canada
| | - Pierre Blanchet
- Centre de Recherche de l’Institut Universitaire en Santé Mentale de Montréal, Montréal, QC H1N 3J4, Canada; (J.B.L.); (P.B.); (K.P.O.)
- Faculté de Médecine Dentaire, Département de Stomatologie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Kieron P. O’Connor
- Centre de Recherche de l’Institut Universitaire en Santé Mentale de Montréal, Montréal, QC H1N 3J4, Canada; (J.B.L.); (P.B.); (K.P.O.)
- Département de Psychiatrie et Addictologie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Marc E. Lavoie
- Laboratoire de Psychophysiologie Cognitive et Sociale, Montréal, QC H1N 3J4, Canada;
- Centre de Recherche de l’Institut Universitaire en Santé Mentale de Montréal, Montréal, QC H1N 3J4, Canada; (J.B.L.); (P.B.); (K.P.O.)
- Département de Sciences Humaines, Lettres et Communication, Université TÉLUQ, Quebec City, QC G1K 9H6, Canada
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2
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Perera MPN, Mallawaarachchi S, Bailey NW, Murphy OW, Fitzgerald PB. Obsessive-compulsive disorder (OCD) is associated with increased engagement of frontal brain regions across multiple event-related potentials. Psychol Med 2023; 53:7287-7299. [PMID: 37092862 PMCID: PMC10719690 DOI: 10.1017/s0033291723000843] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/09/2023] [Accepted: 03/15/2023] [Indexed: 04/25/2023]
Abstract
BACKGROUND Obsessive-compulsive disorder (OCD) is a psychiatric condition leading to significant distress and poor quality of life. Successful treatment of OCD is restricted by the limited knowledge about its pathophysiology. This study aimed to investigate the pathophysiology of OCD using electroencephalographic (EEG) event-related potentials (ERPs), elicited from multiple tasks to characterise disorder-related differences in underlying brain activity across multiple neural processes. METHODS ERP data were obtained from 25 OCD patients and 27 age- and sex-matched healthy controls (HCs) by recording EEG during flanker and go/nogo tasks. Error-related negativity (ERN) was elicited by the flanker task, while N200 and P300 were generated using the go/nogo task. Primary comparisons of the neural response amplitudes and the topographical distribution of neural activity were conducted using scalp field differences across all time points and electrodes. RESULTS Compared to HCs, the OCD group showed altered ERP distributions. Contrasting with the previous literature on ERN and N200 topographies in OCD where fronto-central negative voltages were reported, we detected positive voltages. Additionally, the P300 was found to be less negative in the frontal regions. None of these ERP findings were associated with OCD symptom severity. CONCLUSIONS These results indicate that individuals with OCD show altered frontal neural activity across multiple executive function-related processes, supporting the frontal dysfunction theory of OCD. Furthermore, due to the lack of association between altered ERPs and OCD symptom severity, they may be considered potential candidate endophenotypes for OCD.
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Affiliation(s)
- M. Prabhavi N. Perera
- Central Clinical School, Monash University, Wellington Road, Clayton, VIC 3800, Australia
| | | | - Neil W. Bailey
- Central Clinical School, Monash University, Wellington Road, Clayton, VIC 3800, Australia
- Monarch Research Institute, Monarch Mental Health Group, Sydney, NSW, Australia
- School of Medicine and Psychology, Australian National University, Canberra, ACT 2600, Australia
| | - Oscar W. Murphy
- Central Clinical School, Monash University, Wellington Road, Clayton, VIC 3800, Australia
- Bionics Institute, East Melbourne, VIC 3002, Australia
| | - Paul B. Fitzgerald
- School of Medicine and Psychology, Australian National University, Canberra, ACT 2600, Australia
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3
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Zygouris NC, Vlachos F, Stamoulis GI. ERPs in Children and Adolescents with Generalized Anxiety Disorder: Before and after an Intervention Program. Brain Sci 2022; 12:brainsci12091174. [PMID: 36138910 PMCID: PMC9497116 DOI: 10.3390/brainsci12091174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/20/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
According to DSM 5, generalized anxiety disorder (GAD) is characterized by excessive, uncontrollable worry about various topics that occupies the majority of the subject’s time for a period of at least six months. The aforementioned state causes distress and/or functional impairments. This paper presents the outcomes of a pilot study that evaluated the implementation of cognitive behavioral therapy (CBT) and CBT with an SSRIs intervention program. The participants comprised 16 children and adolescents with GAD (8 males and 8 females) matched with 16 typically developing peers (8 males and 8 females) aged from 10 to 16 years old (M = 12.56 SD = 2.18). Baseline assessment consisted of event related potentials (ERPs), which indicated that participants with GAD presented cognitive deficits in attention and memory, as they exhibited longer P300 latencies. Following treatment with the CBT program and/or medication, children and adolescents with GAD did not present statistically significantly longer P300 latencies and reaction times in comparison to the control group. Lastly, children and adolescents who followed the CBT program or the CBT program with psychopharmacological assistance did not reveal statistically significant differences in 13 out of 15 topographic brain areas and in reaction time.
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Affiliation(s)
- Nikolaos C. Zygouris
- Department of Computer Science and Telecommunications, University of Thessaly, 35131 Lamia, Greece
- Correspondence: ; Tel.: +30-2231060184
| | - Filippos Vlachos
- Special Education Department, University of Thessaly, 35221 Volos, Greece
| | - Georgios I. Stamoulis
- Department of Electrical and Computer Engineering, University of Thessaly, 38334 Volos, Greece
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4
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Flasbeck V, Enzi B, Andreou C, Juckel G, Mavrogiorgou P. P300 and delay-discounting in obsessive-compulsive disorder. Eur Arch Psychiatry Clin Neurosci 2022; 272:327-339. [PMID: 34258638 PMCID: PMC8866265 DOI: 10.1007/s00406-021-01302-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 07/04/2021] [Indexed: 12/04/2022]
Abstract
Previous research showed that dysfunctions of fronto-striatal neural networks are implicated in the pathophysiology of obsessive-compulsive disorder (OCD). Accordingly, patients with OCD showed altered performances during decision-making tasks. As P300, evoked by oddball paradigms, is suggested to be related to attentional and cognitive processes and generated in the medial temporal lobe and orbitofrontal and cingulate cortices, it is of special interest in OCD research. Therefore, this study aimed to investigate P300 in OCD and its associations with brain activity during decision-making: P300, evoked by an auditory oddball paradigm, was analysed in 19 OCD patients and 19 healthy controls regarding peak latency, amplitude and source density power in parietal cortex areas by sLORETA. Afterwards, using a fMRI paradigm, Blood-oxygen-level-dependent (BOLD) contrast imaging was conducted during a delay-discounting paradigm. We hypothesised differences between groups regarding P300 characteristics and associations with frontal activity during delay-discounting. The P300 did not differ between groups, however, the P300 latency over the P4 electrode correlated negatively with the NEO-FFI score openness to experience in patients with OCD. In healthy controls, P300 source density power correlated with activity in frontal regions when processing rewards, a finding which was absent in OCD patients. To conclude, associations of P300 with frontal brain activation during delay-discounting were found, suggesting a contribution of attentional or context updating processes. Since this association was absent in patients with OCD, the findings could be interpreted as being indeed related to dysfunctions of fronto-striatal neural networks in patients with OCD.
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Affiliation(s)
- Vera Flasbeck
- grid.5570.70000 0004 0490 981XDepartment of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Alexandrinenstr. 1, 44791 Bochum, Germany
| | - Björn Enzi
- grid.5570.70000 0004 0490 981XDepartment of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Alexandrinenstr. 1, 44791 Bochum, Germany
| | - Christina Andreou
- grid.412468.d0000 0004 0646 2097Department of Psychiatry and Psychotherapy, University Hospital Lübeck (UKSH), Ratzeburger Allee 160, 23538 Lübeck, Germany
| | - Georg Juckel
- Department of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Alexandrinenstr. 1, 44791, Bochum, Germany.
| | - Paraskevi Mavrogiorgou
- grid.5570.70000 0004 0490 981XDepartment of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Alexandrinenstr. 1, 44791 Bochum, Germany
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5
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Raggi A, Lanza G, Ferri R. A Review on P300 in Obsessive-Compulsive Disorder. Front Psychiatry 2021; 12:751215. [PMID: 34887786 PMCID: PMC8649722 DOI: 10.3389/fpsyt.2021.751215] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/01/2021] [Indexed: 02/05/2023] Open
Abstract
Neuropsychological studies indicate the presence of cognitive changes in patients with obsessive-compulsive disorder (OCD). Indeed, OCD may be included among the dysfunctions of the frontal lobes and their connections with the limbic system, associative cortex, and basal ganglia. P300 is a positive component of the human event-related potential (ERP); it is associated with processes of encoding, identification, and categorization constituting, as a whole, the superior cortical function of information processing. Thus, P300 explores several areas that are implicated in OCD pathophysiology. Our aim is to review all relevant studies on the P300 component of the human ERP in order to recognize any significant central nervous system (CNS) correlate of cognitive dysfunction in OCD. A PubMed-based literature search resulted in 35 articles assessing P300 in OCD and reporting neurophysiological correlates of response inhibition, cortical hyperarousal, and over-focused attention. A decreased P300 amplitude was reported in both adult and pediatric patients, with a trend toward normalization after pharmacological treatment. Source localization studies disclosed an association between P300 abnormalities and the functioning of brain regions involved in the pathophysiology of OCD. Moreover, studies converge on the evidence of neurophysiological dysfunction in the frontal areas with impairment of the normal inhibitory processes in OCD. At least some of these electrophysiological correlates might reflect the obsessive thoughts and compulsions that characterize this disorder. These findings may also support cognitive-behavioral therapy (CBT) approaches on over-focused attention and inflexibility of compulsive behaviors, which should be associated to pharmacological treatment in these patients.
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Affiliation(s)
- Alberto Raggi
- Unit of Neurology, G.B. Morgagni – L. Pierantoni Hospital, Forlì, Italy
| | - Giuseppe Lanza
- Department of Surgery and Medical-Surgical Specialties, University of Catania, Catania, Italy
- Clinical Neurophysiology Research Unit, Oasi Research Institute - Istituto di Ricerca e Cura a Cattarere Scientifico (IRCCS), Troina, Italy
- *Correspondence: Giuseppe Lanza
| | - Raffaele Ferri
- Clinical Neurophysiology Research Unit, Oasi Research Institute - Istituto di Ricerca e Cura a Cattarere Scientifico (IRCCS), Troina, Italy
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6
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Kong XZ, Boedhoe PSW, Abe Y, Alonso P, Ameis SH, Arnold PD, Assogna F, Baker JT, Batistuzzo MC, Benedetti F, Beucke JC, Bollettini I, Bose A, Brem S, Brennan BP, Buitelaar J, Calvo R, Cheng Y, Cho KIK, Dallaspezia S, Denys D, Ely BA, Feusner J, Fitzgerald KD, Fouche JP, Fridgeirsson EA, Glahn DC, Gruner P, Gürsel DA, Hauser TU, Hirano Y, Hoexter MQ, Hu H, Huyser C, James A, Jaspers-Fayer F, Kathmann N, Kaufmann C, Koch K, Kuno M, Kvale G, Kwon JS, Lazaro L, Liu Y, Lochner C, Marques P, Marsh R, Martínez-Zalacaín I, Mataix-Cols D, Medland SE, Menchón JM, Minuzzi L, Moreira PS, Morer A, Morgado P, Nakagawa A, Nakamae T, Nakao T, Narayanaswamy JC, Nurmi EL, O'Neill J, Pariente JC, Perriello C, Piacentini J, Piras F, Piras F, Pittenger C, Reddy YCJ, Rus-Oswald OG, Sakai Y, Sato JR, Schmaal L, Simpson HB, Soreni N, Soriano-Mas C, Spalletta G, Stern ER, Stevens MC, Stewart SE, Szeszko PR, Tolin DF, Tsuchiyagaito A, van Rooij D, van Wingen GA, Venkatasubramanian G, Wang Z, Yun JY, Thompson PM, Stein DJ, van den Heuvel OA, Francks C. Mapping Cortical and Subcortical Asymmetry in Obsessive-Compulsive Disorder: Findings From the ENIGMA Consortium. Biol Psychiatry 2020; 87:1022-1034. [PMID: 31178097 PMCID: PMC7094802 DOI: 10.1016/j.biopsych.2019.04.022] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/21/2019] [Accepted: 04/10/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Lateralized dysfunction has been suggested in obsessive-compulsive disorder (OCD). However, it is currently unclear whether OCD is characterized by abnormal patterns of brain structural asymmetry. Here we carried out what is by far the largest study of brain structural asymmetry in OCD. METHODS We studied a collection of 16 pediatric datasets (501 patients with OCD and 439 healthy control subjects), as well as 30 adult datasets (1777 patients and 1654 control subjects) from the OCD Working Group within the ENIGMA (Enhancing Neuro Imaging Genetics through Meta Analysis) Consortium. Asymmetries of the volumes of subcortical structures, and of measures of regional cortical thickness and surface areas, were assessed based on T1-weighted magnetic resonance imaging scans, using harmonized image analysis and quality control protocols. We investigated possible alterations of brain asymmetry in patients with OCD. We also explored potential associations of asymmetry with specific aspects of the disorder and medication status. RESULTS In the pediatric datasets, the largest case-control differences were observed for volume asymmetry of the thalamus (more leftward; Cohen's d = 0.19) and the pallidum (less leftward; d = -0.21). Additional analyses suggested putative links between these asymmetry patterns and medication status, OCD severity, or anxiety and depression comorbidities. No significant case-control differences were found in the adult datasets. CONCLUSIONS The results suggest subtle changes of the average asymmetry of subcortical structures in pediatric OCD, which are not detectable in adults with the disorder. These findings may reflect altered neurodevelopmental processes in OCD.
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Affiliation(s)
- Xiang-Zhen Kong
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands.
| | - Premika S W Boedhoe
- Department of Psychiatry, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Department of Anatomy and Neurosciences, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Yoshinari Abe
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Pino Alonso
- Department of Psychiatry, Bellvitge University Hospital, Bellvitge Biomedical Research Institute-Institut d'Investigació Biomédica de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental-CIBERSAM, University of Barcelona, Barcelona, Spain; Department of Clinical Sciences, University of Barcelona, Barcelona, Spain
| | - Stephanie H Ameis
- The Margaret and Wallace McCain Centre for Child, Youth and Family Mental Health, Campbell Family Mental Health Research Institute, The Centre for Addiction and Mental Health, Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, Alberta; Centre for Brain and Mental Health, The Hospital for Sick Children, Toronto, Alberta
| | - Paul D Arnold
- Mathison Centre for Mental Health Research and Education, Hotchkiss Brain Institute, Calgary, Alberta; Department of Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, Alberta
| | - Francesca Assogna
- Laboratory of Neuropsychiatry, Department of Clinical and Behavioral Neurology, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia Foundation, Rome, Italy
| | - Justin T Baker
- McLean Hopsital, Harvard Medical School, Belmont, Massachusetts
| | - Marcelo C Batistuzzo
- Departamento e Instituto de Psiquiatria do Hospital das Clinicas, IPQ HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Francesco Benedetti
- Psychiatry and Clinical Psychobiology, Division of Neuroscience, Scientific Institute Ospedale San Raffaele, Milano, Italy
| | - Jan C Beucke
- Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Irene Bollettini
- Psychiatry and Clinical Psychobiology, Division of Neuroscience, Scientific Institute Ospedale San Raffaele, Milano, Italy
| | - Anushree Bose
- Obsessive-Compulsive Disorder Clinic, Department of Psychiatry National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Silvia Brem
- Department of Child and Adolescent Psychiatry and Psychotherapy, Psychiatric Hospital, University of Zürich, Zürich, Switzerland; Neuroscience Center Zürich, University of Zürich and Eidgenössische Technische Hochschule Zürich, Zürich, Switzerland
| | - Brian P Brennan
- McLean Hopsital, Harvard Medical School, Belmont, Massachusetts
| | - Jan Buitelaar
- Department of Cognitive Neuroscience, Radboud University, Nijmegen, The Netherlands
| | - Rosa Calvo
- Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clínic Universitari, Barcelona, Spain; Department of Medicine, University of Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Yuqi Cheng
- Department of Psychiatry, First Affiliated Hospital of Kunming Medical University, Shanghai, People's Republic of China
| | - Kang Ik K Cho
- Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Sara Dallaspezia
- Psychiatry and Clinical Psychobiology, Division of Neuroscience, Scientific Institute Ospedale San Raffaele, Milano, Italy
| | - Damiaan Denys
- Department of Psychiatry, Amsterdam Neuroscience, Amsterdam, The Netherlands; Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Benjamin A Ely
- Department of Neuroscience, Graduate School of Biomedical Sciences, New York, New York
| | - Jamie Feusner
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles
| | - Kate D Fitzgerald
- Department of Psychiatry, University of Michigan, Ann Arbor, Michigan
| | - Jean-Paul Fouche
- Department of Psychiatry, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa; Department of Psychiatry, University of Stellenbosch, Cape Town, South Africa
| | | | - David C Glahn
- Department of Psychiatry, New Haven, Connecticut; Olin Neuropsychiatric Research Center, Olin Neuropsychiatry Research Center, Hartford, Connecticut
| | | | - Deniz A Gürsel
- Department of Neuroradiology, Technische Universität München, München, Germany; TUM-Neuroimaging Center (TUM-NIC) of Klinikum Rechts der Isar, Technische Universität München, München, Germany
| | - Tobias U Hauser
- Department of Child and Adolescent Psychiatry and Psychotherapy, Psychiatric Hospital, University of Zürich, Zürich, Switzerland; Max Planck UCL Centre for Computational Psychiatry and Ageing Research, University College London, London, United Kingdom; Wellcome Centre for Human Neuroimaging, University College London, London, United Kingdom
| | - Yoshiyuki Hirano
- Research Center for Child Mental Development, Chiba University, Chiba, Japan
| | - Marcelo Q Hoexter
- Departamento e Instituto de Psiquiatria do Hospital das Clinicas, IPQ HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Hao Hu
- Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Chaim Huyser
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands; De Bascule, Academic Center for Child and Adolescent Psychiatry, Amsterdam, The Netherlands
| | - Anthony James
- Department of Psychiatry, Oxford University, Oxford, United Kingdom
| | - Fern Jaspers-Fayer
- University of British Columbia, British Columbia Children's Hospital, Vancouver, British Columbia
| | - Norbert Kathmann
- Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Christian Kaufmann
- Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Kathrin Koch
- Department of Neuroradiology, Technische Universität München, München, Germany; TUM-Neuroimaging Center (TUM-NIC) of Klinikum Rechts der Isar, Technische Universität München, München, Germany
| | - Masaru Kuno
- Research Center for Child Mental Development, Chiba University, Chiba, Japan
| | - Gerd Kvale
- OCD Team, Haukeland University Hospital, Bergen, Norway; Department of Clinical Psychology, University of Bergen, Bergen, Norway
| | - Jun Soo Kwon
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Republic of Korea
| | - Luisa Lazaro
- Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clínic Universitari, Barcelona, Spain; Department of Medicine, University of Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Yanni Liu
- Department of Psychiatry, University of Michigan, Ann Arbor, Michigan
| | - Christine Lochner
- SU/UCT MRC Unit on Anxiety and Stress Disorders, University of Stellenbosch, Cape Town, South Africa
| | - Paulo Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Braga/Guimarães, Portugal; Clinical Academic Center-Braga, Braga, Braga/Guimarães, Portugal; Life and Health Sciences Research Institute (ICVS)/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rachel Marsh
- Columbia University Irving Medical Center, New York State Psychiatric Institute, Columbia University, New York, New York; The Division of Child and Adolescent Psychiatry, New York State Psychiatric Institute, Columbia University, New York, New York
| | - Ignacio Martínez-Zalacaín
- Department of Psychiatry, Bellvitge University Hospital, Bellvitge Biomedical Research Institute-Institut d'Investigació Biomédica de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain; Department of Clinical Sciences, University of Barcelona, Barcelona, Spain
| | - David Mataix-Cols
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
| | - Sarah E Medland
- Psychiatric Genetics, QIMR Berghofer Medical Research Institute, Brisbane, Queensland
| | - José M Menchón
- Department of Psychiatry, Bellvitge University Hospital, Bellvitge Biomedical Research Institute-Institut d'Investigació Biomédica de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental-CIBERSAM, University of Barcelona, Barcelona, Spain; Department of Clinical Sciences, University of Barcelona, Barcelona, Spain
| | - Luciano Minuzzi
- Mood Disorders Clinic, St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Pedro S Moreira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Braga/Guimarães, Portugal; Clinical Academic Center-Braga, Braga, Braga/Guimarães, Portugal; Life and Health Sciences Research Institute (ICVS)/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Astrid Morer
- Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clínic Universitari, Barcelona, Spain; Department of Medicine, University of Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Pedro Morgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Braga/Guimarães, Portugal; Clinical Academic Center-Braga, Braga, Braga/Guimarães, Portugal; Life and Health Sciences Research Institute (ICVS)/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Akiko Nakagawa
- Research Center for Child Mental Development, Chiba University, Chiba, Japan
| | - Takashi Nakamae
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Tomohiro Nakao
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Janardhanan C Narayanaswamy
- Obsessive-Compulsive Disorder Clinic, Department of Psychiatry National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Erika L Nurmi
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles
| | - Joseph O'Neill
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles
| | - Jose C Pariente
- Magnetic Resonance Image Core Facility, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Chris Perriello
- McLean Hopsital, Harvard Medical School, Belmont, Massachusetts; University of Illinois at Urbana-Champaign, Champaign, Illinois
| | - John Piacentini
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles
| | - Fabrizio Piras
- Laboratory of Neuropsychiatry, Department of Clinical and Behavioral Neurology, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia Foundation, Rome, Italy
| | - Federica Piras
- Laboratory of Neuropsychiatry, Department of Clinical and Behavioral Neurology, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia Foundation, Rome, Italy
| | | | - Y C Janardhan Reddy
- Obsessive-Compulsive Disorder Clinic, Department of Psychiatry National Institute of Mental Health and Neurosciences, Bangalore, India
| | | | - Yuki Sakai
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan; ATR Brain Information Communication Research Laboratory Group, Kyoto, Japan
| | - Joao R Sato
- Center of Mathematics, Computing and Cognition, Universidade Federal do ABC, Santo Andre, Brazil
| | - Lianne Schmaal
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Australia; Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - H Blair Simpson
- Columbia University Irving Medical Center, New York State Psychiatric Institute, Columbia University, New York, New York; Center for OCD and Related Disorders, New York State Psychiatric Institute, New York, New York
| | - Noam Soreni
- Pediatric OCD Consultation Service, Anxiety Treatment and Research Center, St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Carles Soriano-Mas
- Department of Psychiatry, Bellvitge University Hospital, Bellvitge Biomedical Research Institute-Institut d'Investigació Biomédica de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental-CIBERSAM, University of Barcelona, Barcelona, Spain; Department of Psychobiology and Methodology of Health Sciences, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Gianfranco Spalletta
- Laboratory of Neuropsychiatry, Department of Clinical and Behavioral Neurology, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia Foundation, Rome, Italy; Beth K. and Stuart C. Yudofsky Division of Neuropsychiatry, Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas
| | - Emily R Stern
- Department of Psychiatry, New York University School of Medicine, New York, New York; Nathan Kline Institute for Psychiatric Research, Orangeburg, New York
| | - Michael C Stevens
- Yale University School of Medicine, New Haven, Connecticut; Clinical Neuroscience and Development Laboratory, Olin Neuropsychiatry Research Center, Hartford, Connecticut
| | - S Evelyn Stewart
- Department of Psychiatry, British Columbia Children's Hospital, Vancouver, British Columbia; Provincial Obsessive-Compulsive Disorder Program, British Columbia Children's Hospital, Vancouver, British Columbia
| | - Philip R Szeszko
- Icahn School of Medicine at Mount Sinai, New York State Psychiatric Institute, Columbia University, New York, New York; James J. Peters VA Medical Center, New York, New York
| | - David F Tolin
- Yale University School of Medicine, New Haven, Connecticut; Institute of Living/Hartford Hospital, Hartford, Connecticut
| | - Aki Tsuchiyagaito
- Research Center for Child Mental Development, Chiba University, Chiba, Japan; Laureate Institute for Brain Research, Tulsa, Oklahoma
| | - Daan van Rooij
- Department of Cognitive Neuroscience, Radboud University, Nijmegen, The Netherlands
| | - Guido A van Wingen
- Department of Psychiatry, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Ganesan Venkatasubramanian
- Obsessive-Compulsive Disorder Clinic, Department of Psychiatry National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Zhen Wang
- Shanghai Mental Health Center, Shanghai, People's Republic of China; Shanghai Key Laboratory of Psychotic Disorders, Shanghai, People's Republic of China
| | - Je-Yeon Yun
- Yeongeon Student Support Center, Seoul National University College of Medicine, Seoul, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea
| | - Paul M Thompson
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of the University of Southern California, Marina del Rey, California
| | - Dan J Stein
- SU/UCT MRC Unit on Risk and Resilience in Mental Disorders, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Odile A van den Heuvel
- Department of Psychiatry, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Department of Anatomy and Neurosciences, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Clyde Francks
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands.
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7
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Koorenhof LJ, Dommett EJ. An Investigation Into Response Inhibition in Distinct Clinical Groups Within Obsessive-Compulsive Disorder. J Neuropsychiatry Clin Neurosci 2020; 31:228-238. [PMID: 30888920 DOI: 10.1176/appi.neuropsych.18070166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Response inhibition has been frequently studied in obsessive-compulsive disorder (OCD) with mixed results. The inconsistent findings may stem in part from failure to consider the heterogeneity of the disorder. METHODS The authors examined behavioral and event-related potential (ERP) components (N2 and P3) during a simple response inhibition go/nogo task in a sample of patients with OCD (N=48) and control subjects (N=53). Comparisons in behavioral and electrophysiological measures were made between groups (OCD compared with control) and within the OCD group in terms of symptom clusters (symmetry, forbidden thoughts, and cleaning) and comorbidity status (OCD only and OCD with depression). RESULTS In the OCD group, the N2 component appeared more frontally localized compared with the control group. Participants with OCD demonstrated longer N2 latency and a larger difference in N2 between the nogo and go conditions, suggesting slower but greater conflict monitoring. P3 had a larger amplitude in the OCD group compared with the control group, indicative of greater response inhibition, but was also reduced in the nogo compared with go condition, suggesting suppressed response inhibition. No significant differences were found between symptom clusters, but patients with OCD only made more omission errors compared with patients with OCD and comorbid depression. The latter cohort also had faster P3 latencies, which, combined with the behavioral data, indicates slightly improved response inhibition when comorbid depression is found. CONCLUSIONS On the basis of these results, it would seem unlikely that symptom clusters have contributed to previous inconsistencies in the literature. Comorbid depression, which may have affected previous results, should be considered in future research.
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Affiliation(s)
- Loes J Koorenhof
- The School of Life, Health and Chemical Sciences, Open University, Milton Keynes, United Kingdom (Koorenhof); and the Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London (Dommett)
| | - Eleanor J Dommett
- The School of Life, Health and Chemical Sciences, Open University, Milton Keynes, United Kingdom (Koorenhof); and the Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London (Dommett)
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8
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Perera MPN, Bailey NW, Herring SE, Fitzgerald PB. Electrophysiology of obsessive compulsive disorder: A systematic review of the electroencephalographic literature. J Anxiety Disord 2019; 62:1-14. [PMID: 30469123 DOI: 10.1016/j.janxdis.2018.11.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 10/04/2018] [Accepted: 11/03/2018] [Indexed: 01/04/2023]
Abstract
Obsessive-compulsive disorder (OCD) is a chronic disease that causes significant decline in the quality of life of those affected. Due to our limited understanding of the underlying pathophysiology of OCD, successful treatment remains elusive. Although many have studied the pathophysiology of OCD through electroencephalography (EEG), limited attempts have been made to synthesize and interpret their findings. To bridge this gap, we conducted a comprehensive literature review using Medline/PubMed and considered the 65 most relevant studies published before June 2018. The findings are categorised into quantitative EEG, sleep related EEG and event related potentials (ERPs). Increased frontal asymmetry, frontal slowing and an enhancement in the ERP known as error related negativity (ERN) were consistent findings in OCD. However, sleep EEG and other ERP (P3 and N2) findings were inconsistent. Additionally, we analysed the usefulness of ERN as a potential candidate endophenotype. We hypothesize that dysfunctional frontal circuitry and overactive performance monitoring are the major underlying impairments in OCD. Additionally, we conceptualized that defective fronto-striato-thalamic circuitry causing poor cerebral functional connectivity gives rise to the OCD behavioural manifestations. Finally, we have discussed transcranial magnetic stimulation and EEG (TMS-EEG) applications in future research to further our knowledge of the underlying pathophysiology of OCD.
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Affiliation(s)
- M Prabhavi N Perera
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and Alfred Hospital, Level 4, 607, St. Kilda Road, Melbourne, Victoria 3004, Australia.
| | - Neil W Bailey
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and Alfred Hospital, Level 4, 607, St. Kilda Road, Melbourne, Victoria 3004, Australia; Epworth Centre for Innovation in Mental Health, Epworth HealthCare, 888 Toorak Rd, Camberwell, Victoria 3124, Australia.
| | - Sally E Herring
- Epworth Centre for Innovation in Mental Health, Epworth HealthCare, 888 Toorak Rd, Camberwell, Victoria 3124, Australia.
| | - Paul B Fitzgerald
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and Alfred Hospital, Level 4, 607, St. Kilda Road, Melbourne, Victoria 3004, Australia; Epworth Centre for Innovation in Mental Health, Epworth HealthCare, 888 Toorak Rd, Camberwell, Victoria 3124, Australia.
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9
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Hirjak D, Meyer-Lindenberg A, Fritze S, Sambataro F, Kubera KM, Wolf RC. Motor dysfunction as research domain across bipolar, obsessive-compulsive and neurodevelopmental disorders. Neurosci Biobehav Rev 2018; 95:315-335. [PMID: 30236781 DOI: 10.1016/j.neubiorev.2018.09.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 08/08/2018] [Accepted: 09/12/2018] [Indexed: 02/07/2023]
Abstract
Although genuine motor abnormalities (GMA) are frequently found in schizophrenia, they are also considered as an intrinsic feature of bipolar, obsessive-compulsive, and neurodevelopmental disorders with early onset such as autism, ADHD, and Tourette syndrome. Such transnosological observations strongly suggest a common neural pathophysiology. This systematic review highlights the evidence on GMA and their neuroanatomical substrates in bipolar, obsessive-compulsive, and neurodevelopmental disorders. The data lends support for a common pattern contributing to GMA expression in these diseases that seems to be related to cerebello-thalamo-cortical, fronto-parietal, and cortico-subcortical motor circuit dysfunction. The identified studies provide first evidence for a motor network dysfunction as a correlate of early neurodevelopmental deviance prior to clinical symptom expression. There are also first hints for a developmental risk factor model of these mental disorders. An in-depth analysis of motor networks and related patho-(physiological) mechanisms will not only help promoting Research Domain Criteria (RDoC) Motor System construct, but also facilitate the development of novel psychopharmacological models, as well as the identification of neurobiologically plausible target sites for non-invasive brain stimulation.
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Affiliation(s)
- Dusan Hirjak
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
| | - Andreas Meyer-Lindenberg
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Stefan Fritze
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Katharina M Kubera
- Center for Psychosocial Medicine, Department of General Psychiatry, Heidelberg University, Heidelberg, Germany
| | - Robert C Wolf
- Center for Psychosocial Medicine, Department of General Psychiatry, Heidelberg University, Heidelberg, Germany
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10
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Riesel A, Klawohn J, Kathmann N, Endrass T. Conflict monitoring and adaptation as reflected by N2 amplitude in obsessive-compulsive disorder. Psychol Med 2017; 47:1379-1388. [PMID: 28095945 DOI: 10.1017/s0033291716003597] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Feelings of doubt and perseverative behaviours are key symptoms of obsessive-compulsive disorder (OCD) and have been linked to hyperactive error and conflict signals in the brain. While enhanced neural correlates of error monitoring have been robustly shown, far less is known about conflict processing and adaptation in OCD. METHOD We examined event-related potentials during conflict processing in 70 patients with OCD and 70 matched healthy comparison participants, focusing on the stimulus-locked N2 elicited in a flanker task. Conflict adaptation was evaluated by analysing sequential adjustments in N2 and behaviour, i.e. current conflict effects as a function of preceding conflict. RESULTS Patients with OCD showed enhanced N2 amplitudes compared with healthy controls. Further, patients showed stronger conflict adaptation effects on reaction times and N2 amplitude. Thus, the effect of previous compatibility was larger in patients than in healthy participants as indicated by greater N2 adjustments in change trials (i.e. iC, cI). As a result of stronger conflict adaptation in patients, N2 amplitudes were comparable between groups in incompatible trials following incompatible trials. CONCLUSIONS Larger N2 amplitudes and greater conflict adaptation in OCD point to enhanced conflict monitoring leading to increased recruitment of cognitive control in patients. This was most pronounced in change trials and was associated with stronger conflict adjustment in N2 and behaviour. Thus, hyperactive conflict monitoring in OCD may be beneficial in situations that require a high amount of control to resolve conflict, but may also reflect an effortful process that is linked to distress and symptoms of OCD.
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Affiliation(s)
- A Riesel
- Department of Psychology,Humboldt-Universität zu Berlin,Berlin,Germany
| | - J Klawohn
- Department of Psychology,Humboldt-Universität zu Berlin,Berlin,Germany
| | - N Kathmann
- Department of Psychology,Humboldt-Universität zu Berlin,Berlin,Germany
| | - T Endrass
- Department of Psychology,Humboldt-Universität zu Berlin,Berlin,Germany
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11
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Yamamuro K, Ota T, Iida J, Kishimoto N, Nakanishi Y, Matsuura H, Uratani M, Okazaki K, Kishimoto T. A longitudinal event-related potential study of selective serotonin reuptake inhibitor therapy in treatment-naïve pediatric obsessive compulsive disorder patients. Psychiatry Res 2016; 245:217-223. [PMID: 27552672 DOI: 10.1016/j.psychres.2016.07.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/04/2016] [Accepted: 07/18/2016] [Indexed: 11/18/2022]
Abstract
Obsessive-compulsive disorder (OCD) is characterized by obsessive thoughts and/or compulsive behaviors, involving specific cognition and/or information processing disorders. Event-related potentials (ERPs) are commonly used as physiological measures of cognitive function. In conscious patients, ERPs are easily and non-invasively measured. Previous ERP studies have revealed differences between OCD patients and control subjects. Whether ERPs reflect the pharmacological effects of OCD treatment, particularly in treatment-naïve pediatric patients, remains unknown. We used the Child's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) to evaluate the symptomatic severity of 12 treatment-naïve pediatric OCD patients. Comparisons were made with 12 age-, sex-, and intelligence-matched controls. The P300 and mismatch negativity (MMN) components were measured during an auditory odd-ball task at baseline in both groups and after the 3-year serotonin reuptake inhibitor (SSRI) treatment in OCD patients. Compared with controls, P300 amplitudes were smaller n the OCD group at Fz, Cz, Pz, C3, and C4. After SSRI treatment, P300 amplitudes increased partly at Fz and C4 in association with symptomatic improvements. We found a significant positive correlation between P300 amplitude in C4 and CY-BOCS scores. Our findings confirm the utility of SSRIs in pediatric OCD, and suggest the utility of ERPs for evaluating pharmacological effects in treatment-naïve pediatric OCD patients.
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Affiliation(s)
- Kazuhiko Yamamuro
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan.
| | - Toyosaku Ota
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Junzo Iida
- Faculty of Nursing, Nara Medical University School of Medicine, Kashihara, Japan
| | - Naoko Kishimoto
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Yoko Nakanishi
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | | | - Mitsuhiro Uratani
- Department of Psychiatry, Nara Prefectural General Rehabilitation Center, Shiki, Japan
| | - Kosuke Okazaki
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Toshifumi Kishimoto
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
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12
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Ozcan H, Ozer S, Yagcioglu S. Neuropsychological, electrophysiological and neurological impairments in patients with obsessive compulsive disorder, their healthy siblings and healthy controls: Identifying potential endophenotype(s). Psychiatry Res 2016; 240:110-117. [PMID: 27100062 DOI: 10.1016/j.psychres.2016.04.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 02/15/2016] [Accepted: 04/06/2016] [Indexed: 11/26/2022]
Abstract
The etiology of obsessive-compulsive disorder (OCD) has not been clarified. This study aimed to investigate the cognitive, neurological, electrophysiological functions which are reflected in executive functions, memory, visuospatial integration; neurological examination and auditory event related potentials (AERP) (N100, N200, P200 and P300) in patients with OCD, their siblings, and control subjects and to determine potential endophenotypic markers. Thirty-three patients with OCD, 18 siblings and 21 controls; matched for age, gender and years of education were included. Yale Brown Obsessive Compulsive Symptoms Checklist Scale, Hamilton Depression-Rating Scale, an exhaustive neuropscyhological test battery and Neurological Evaluation Scale were administered. Their AERP recordings were obtained. Executive functions and visuospatial integration were highly impaired in patients and slightly in their siblings compared to controls. P200 amplitude was sorted as siblings>patients>controls. P300 amplitude was sorted as patients<siblings<controls. Neurological Evaluation Scale scores were lower in patients compared to siblings and controls. The logistic regression analysis showed that, higher P300 amplitude, better performance on block design test and faster completion of Stroop test would predict being in the control group, whereas higher P200 amplitude would predict being in the case (patient and sibling) groups. We suggest that these seem to be the potential endophenotypes of OCD.
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Affiliation(s)
- Halil Ozcan
- Ataturk University, Medical Faculty, Department of Psychiatry, Erzurum, Turkey; Hacettepe University, Medical Faculty, Department of Psychiatry, Ankara, Turkey.
| | - Suzan Ozer
- Hacettepe University, Medical Faculty, Department of Psychiatry, Ankara, Turkey
| | - Suha Yagcioglu
- Hacettepe University, Medical Faculty, Department of Biophysics, Ankara, Turkey
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13
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Yamamuro K, Okada K, Kishimoto N, Ota T, Iida J, Kishimoto T. A longitudinal, event-related potential pilot study of adult obsessive-compulsive disorder with 1-year follow-up. Neuropsychiatr Dis Treat 2016; 12:2463-2471. [PMID: 27713631 PMCID: PMC5045237 DOI: 10.2147/ndt.s117100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
AIM Earlier brain imaging research studies have suggested that brain abnormalities in obsessive-compulsive disorder (OCD) normalize as clinical symptoms improve. However, although many studies have investigated event-related potentials (ERPs) in patients with OCD compared with healthy control subjects, it is currently unknown whether ERP changes reflect pharmacological and psychotherapeutic effects. As such, the current study examined the neurocognitive components of OCD to elucidate the pathophysiological abnormalities involved in the disorder, including the frontal-subcortical circuits. METHODS The Yale-Brown Obsessive-Compulsive Scale was used to evaluate 14 adult patients with OCD. The present study also included ten age-, sex-, and IQ-matched controls. The P300 and mismatch negativity (MMN) components during an auditory oddball task at baseline for both groups and after 1 year of treatment for patients with OCD were measured. RESULTS Compared with controls, P300 amplitude was attenuated in the OCD group at Cz and C4 at baseline. Pharmacotherapy and psychotherapy treatment for 1 year reduced OCD symptomology. P300 amplitude after 1 year of treatment was significantly increased, indicating normalization compared with baseline at Fz, Cz, C3, and C4. We found no differences in P300 latency, MMN amplitude, or MMN latency between baseline and after one year of treatment. CONCLUSION ERPs may be a useful tool for evaluating pharmacological and cognitive behavioral therapy in adult patients with OCD.
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Affiliation(s)
- Kazuhiko Yamamuro
- Department of Psychiatry, Nara Medical University School of Medicine
| | - Koji Okada
- Department of Psychiatry, Jingumaecocorono-Clinic
| | - Naoko Kishimoto
- Department of Psychiatry, Nara Medical University School of Medicine
| | - Toyosaku Ota
- Department of Psychiatry, Nara Medical University School of Medicine
| | - Junzo Iida
- Faculty of Nursing, Nara Medical University School of Medicine, Kashihara, Japan
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14
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Yamamuro K, Ota T, Nakanishi Y, Matsuura H, Okazaki K, Kishimoto N, Takahashi H, Iwasaka H, Iida J, Kishimoto T. Event-related potentials in drug-naïve pediatric patients with obsessive-compulsive disorder. Psychiatry Res 2015; 230:394-9. [PMID: 26410771 DOI: 10.1016/j.psychres.2015.09.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 08/06/2015] [Accepted: 09/15/2015] [Indexed: 11/17/2022]
Abstract
Obsessive-compulsive disorder (OCD) is one of the most common mental health disorders, characterized by obsessive thoughts and/or compulsive behaviors, which may involve specific disorders in cognition and/or information processing. Event-related potentials (ERPs) are commonly used as physiological measures of cognitive function as they are easily measured and noninvasive. In the present study, 20 drug-naïve pediatric patients with OCD were compared with 20 healthy control participants who were age- and sex-matched to perform the ERP. Based on the guidelines for evoked potential measurement, the P300 and mismatch negativity (MMN) were obtained by auditory odd-ball tasks. We found that the amplitudes of the P300 components in the Fz, Cz, Pz, C3, and C4 regions were significantly smaller in the OCD group compared with the control group. There were no between-group differences in P300 latency, MMN amplitude, or MMN latency. Moreover, we found significant correlations between scores on the Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) and P300 amplitudes at Cz, Pz, and C3. The present study is the first to report smaller P300s and the associations between P300 abnormalities and CY-BOCS scores.
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Affiliation(s)
- Kazuhiko Yamamuro
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Toyosaku Ota
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan.
| | - Yoko Nakanishi
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | | | - Kosuke Okazaki
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Naoko Kishimoto
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | | | - Hidemi Iwasaka
- Department of Education, Nara University of Education, Nara, Japan
| | - Junzo Iida
- Faculty of Nursing, Nara Medical University School of Medicine, Kashihara, Japan
| | - Toshifumi Kishimoto
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
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15
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Keskin-Ergen Y, Tükel R, Aslantaş-Ertekin B, Ertekin E, Oflaz S, Devrim-Üçok M. N2 and P3 potentials in early-onset and late-onset patients with obsessive-compulsive disorder. Depress Anxiety 2014; 31:997-1006. [PMID: 24214334 DOI: 10.1002/da.22212] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 10/09/2013] [Accepted: 10/12/2013] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Impaired cognitive control processes may be central in the pathogenesis of obsessive-compulsive disorder (OCD). Our objective was to evaluate cognitive control processes with event-related potentials in early-onset OCD (EO) and late-onset OCD (LO), which are suggested to have distinct characteristics. METHODS Participants were unmedicated EO (n = 26) and LO patients (n = 33) without comorbid psychopathology and healthy controls (n = 54). Go/No-go tasks with 50 and 80% Go trial probabilities were implemented to manipulate the strength of response conflict and inhibitory demands. RESULTS LO patients had shorter N2 latencies than controls and did not show the N2 amplitude increase seen in controls with the increase in Go trial probability as suggestive of abnormal conflict monitoring processes. Both EO and LO patients showed smaller P3 increase than controls with the increase in Go trial probability, suggesting problems in modifying attentional control with changes in task demands. P3 was more anteriorly distributed in LO patients than controls. Additionally, P3 increase, with the increase in Go trial probability, was larger in frontal and central sites than in parietal sites in controls, whereas in EO patients it was almost homogenous across anteroposterior sites. CONCLUSIONS N2 processes were affected only in LO, whereas P3 processes were affected in both EO and LO, although, somewhat differently. P3 distributions suggest that EO and LO patients have differences concerning the contributions of frontal and parietal components of attentional networks to the execution of Go/No-go tasks. Our results imply that EO and LO are distinct subtypes affecting the cognitive control systems differently.
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Affiliation(s)
- Yasemin Keskin-Ergen
- Department of Physiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Buse J, Dörfel D, Lange H, Ehrlich S, Münchau A, Roessner V. Harmonic expectancy violations elicit not-just-right-experiences: A paradigm for investigating obsessive-compulsive characteristics? Cogn Neurosci 2014; 6:8-15. [DOI: 10.1080/17588928.2014.954991] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Grützmann R, Riesel A, Klawohn J, Kathmann N, Endrass T. Complementary modulation of N2 and CRN by conflict frequency. Psychophysiology 2014; 51:761-72. [DOI: 10.1111/psyp.12222] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 03/15/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Rosa Grützmann
- Clinical Psychology; Humboldt-Universität zu Berlin; Berlin Germany
| | - Anja Riesel
- Clinical Psychology; Humboldt-Universität zu Berlin; Berlin Germany
| | - Julia Klawohn
- Clinical Psychology; Humboldt-Universität zu Berlin; Berlin Germany
| | - Norbert Kathmann
- Clinical Psychology; Humboldt-Universität zu Berlin; Berlin Germany
| | - Tanja Endrass
- Clinical Psychology; Humboldt-Universität zu Berlin; Berlin Germany
- Department of Psychology; Otto-von-Guericke Universität Magdeburg; Magdeburg Germany
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18
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Andreou C, Leicht G, Popescu V, Pogarell O, Mavrogiorgou P, Rujescu D, Giegling I, Zaudig M, Juckel G, Hegerl U, Mulert C. P300 in obsessive-compulsive disorder: source localization and the effects of treatment. J Psychiatr Res 2013; 47:1975-83. [PMID: 24075207 DOI: 10.1016/j.jpsychires.2013.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/26/2013] [Accepted: 09/06/2013] [Indexed: 11/16/2022]
Abstract
UNLABELLED Converging evidence suggests that frontostriatal abnormalities underlie OCD symptoms. The event-related potential P300 is generated along a widely distributed network involving several of the areas implicated in OCD. P300 abnormalities reported in patients with OCD suggest increased activity in these areas. The aim of the present study was to investigate this assumption in unmedicated patients with OCD, and to assess the effects of OCD treatment on P300 brain activity patterns. Seventy-one unmedicated patients with a DSM-IV diagnosis of OCD and 71 age- and gender-matched healthy control subjects participated in the study. The P300 was obtained through 32-channel EEG during an auditory oddball paradigm. Forty-three patients underwent a second EEG assessment after treatment with sertraline and behavioural therapy. Low-resolution electromagnetic tomography (LORETA) was used to localize the sources of brain electrical activity. RESULTS Increased P300-related activity was observed predominantly in the left orbitofrontal cortex, but also in left prefrontal, parietal and temporal areas, in patients compared to controls at baseline. After treatment, reduction of left middle frontal cortex hyperactivity was observed in patients. CONCLUSIONS Findings of increased activity in frontoparietal areas in patients are consistent with several previous studies. Importantly, OCD treatment led to reduction of hyperactivity in the left middle frontal cortex, an area associated with context processing and uncertainty that might be important for the emergence of OCD symptoms. Thus, the present study is the first to show an association between P300 abnormalities and activity in brain regions postulated to be involved in the pathophysiology of OCD.
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Affiliation(s)
- Christina Andreou
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
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How specific are inhibitory deficits to obsessive-compulsive disorder? A neurophysiological comparison with panic disorder. Clin Neurophysiol 2013; 125:463-75. [PMID: 24079948 DOI: 10.1016/j.clinph.2013.08.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/05/2013] [Accepted: 08/17/2013] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Impaired inhibition may perpetuate repetitive symptoms in obsessive-compulsive disorder (OCD), however OCD-specific deficits have yet to be established. We investigated neural correlates of inhibition in OCD vs. healthy and anxious controls. METHODS ERPs and reaction times (RTs) were compared between participants with OCD (n=20), panic disorder (PD; n=20) and healthy controls (HCs; n=20) during an adapted Go/NoGo task, which manipulated inhibitory difficulty. RESULTS A classic P3 NoGo anteriorisation effect occurred across groups. Both clinical groups showed RT impairment, and similar topographical anomalies of several (P2, N2 and P3) ERP components. Notably, both clinical groups lacked the strong frontally maximal N2 component topography seen in the HCs, across stimuli. Additionally, with increasing inhibitory difficulty, N2 latency increased in HCs but not in the clinical groups. CONCLUSIONS Unexpectedly, ERP and behavioural anomalies during inhibition in OCD were not qualitatively different to those in PD, but were generally more severe. Common general and inhibitory deficits may underlie intrusive mental phenomena in both conditions. SIGNIFICANCE This first ERP response inhibition study in OCD to include anxious controls disconfirmed hypotheses regarding OCD-specific inhibitory deficits, indicating the importance of comparing OCD to other conditions, to evaluate neurobiological models.
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Thomas SJ, Gonsalvez CJ, Johnstone SJ. Neural time course of threat-related attentional bias and interference in panic and obsessive–compulsive disorders. Biol Psychol 2013; 94:116-29. [DOI: 10.1016/j.biopsycho.2013.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 05/10/2013] [Accepted: 05/21/2013] [Indexed: 10/26/2022]
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Jaafari N, Fernández de la Cruz L, Grau M, Knowles E, Radua J, Wooderson S, Segalas C, Alonso P, Phillips ML, Menchón JM, Mataix-Cols D. Neurological soft signs in obsessive-compulsive disorder: two empirical studies and meta-analysis. Psychol Med 2013; 43:1069-1079. [PMID: 22932491 DOI: 10.1017/s0033291712002012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Neurological soft signs (NSS) have been inconsistently reported in obsessive-compulsive disorder (OCD) but may make an impact on treatment response. Method The current study examined the presence of NSS in two independent European samples of OCD patients (combined 85 patients and 88 matched healthy controls) using a standardized instrument and conducted a meta-analysis of all published studies identified in the literature with the aim to provide a more definitive answer to the question of whether OCD patients are characterized by increased NSS. RESULTS Both empirical studies found elevated NSS scores in patients compared with matched controls. The results of the meta-analysis, which included 15 studies (combined 498 patients and 520 controls) showed large effect sizes (Hedges' g=1.27, 95% confidence interval 0.80-1.75), indicating that OCD patients have significantly higher rates of NSS than matched controls on both sides of the body and in multiple domains (motor coordination, sensory integration and primitive reflexes). The results were robust and remained largely unchanged in our reliability analyses, which controlled for possible outliers. Meta-regression was employed to examine the role of potential variables of interest including sociodemographic variables, symptom severity, medication effects and the use of different instruments, but none of these variables was clearly associated with NSS. CONCLUSIONS As a group, OCD patients are characterized by increased rates of NSS, compared with healthy controls. However, their origins and potential clinical importance remain to be clarified. Future directions for research are discussed.
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Affiliation(s)
- N Jaafari
- King's College London, Institute of Psychiatry, London, UK
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Melloni M, Urbistondo C, Sedeño L, Gelormini C, Kichic R, Ibanez A. The extended fronto-striatal model of obsessive compulsive disorder: convergence from event-related potentials, neuropsychology and neuroimaging. Front Hum Neurosci 2012; 6:259. [PMID: 23015786 PMCID: PMC3449438 DOI: 10.3389/fnhum.2012.00259] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 08/30/2012] [Indexed: 11/09/2022] Open
Abstract
In this work, we explored convergent evidence supporting the fronto-striatal model of obsessive-compulsive disorder (FSMOCD) and the contribution of event-related potential (ERP) studies to this model. First, we considered minor modifications to the FSMOCD model based on neuroimaging and neuropsychological data. We noted the brain areas most affected in this disorder -anterior cingulate cortex (ACC), basal ganglia (BG), and orbito-frontal cortex (OFC) and their related cognitive functions, such as monitoring and inhibition. Then, we assessed the ERPs that are directly related to the FSMOCD, including the error-related negativity (ERN), N200, and P600. Several OCD studies present enhanced ERN and N2 responses during conflict tasks as well as an enhanced P600 during working memory (WM) tasks. Evidence from ERP studies (especially regarding ERN and N200 amplitude enhancement), neuroimaging and neuropsychological findings suggests abnormal activity in the OFC, ACC, and BG in OCD patients. Moreover, additional findings from these analyses suggest dorsolateral prefrontal and parietal cortex involvement, which might be related to executive function (EF) deficits. Thus, these convergent results suggest the existence of a self-monitoring imbalance involving inhibitory deficits and executive dysfunctions. OCD patients present an impaired ability to monitor, control, and inhibit intrusive thoughts, urges, feelings, and behaviors. In the current model, this imbalance is triggered by an excitatory role of the BG (associated with cognitive or motor actions without volitional control) and inhibitory activity of the OFC as well as excessive monitoring of the ACC to block excitatory impulses. This imbalance would interact with the reduced activation of the parietal-DLPC network, leading to executive dysfunction. ERP research may provide further insight regarding the temporal dynamics of action monitoring and executive functioning in OCD.
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Affiliation(s)
- Margherita Melloni
- Laboratory of Experimental Psychology and Neuroscience (LPEN), Institute of Cognitive Neurology (INECO) and Institute of Neuroscience, Favaloro University Buenos Aires, Argentina
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Del Casale A, Kotzalidis GD, Rapinesi C, Serata D, Ambrosi E, Simonetti A, Pompili M, Ferracuti S, Tatarelli R, Girardi P. Functional neuroimaging in obsessive-compulsive disorder. Neuropsychobiology 2011; 64:61-85. [PMID: 21701225 DOI: 10.1159/000325223] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Accepted: 01/23/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND AIM Obsessive-compulsive disorder (OCD) is a severe, highly prevalent and chronically disabling psychiatric disorder that usually emerges during childhood or adolescence. This paper aims to review the literature on functional neuroimaging in OCD, analysing the reported dysfunctional connectivity in the corticostriatothalamocortical circuitry. METHOD This study included papers published in peer-reviewed journals dealing with functional imaging in OCD. RESULTS Striatal dysfunction, mainly of the caudate nucleus, leads to inefficient thalamic gating, resulting in hyperactivity within the orbitofrontal cortex (intrusive thoughts) and the anterior cingulate cortex (non-specific anxiety). Compulsions consist of ritualistic behaviours performed to recruit the inefficient striatum and neutralise unwanted thoughts and anxiety. Functional neuroimaging findings are discussed against the background of specific cognitive impairments, mainly regarding visuospatial processing, executive functioning and motor speed. Cognitive deficits are partial and specific, matching imaging data. CONCLUSIONS Several studies have targeted brain regions hypothesised to be involved in the pathogenesis of OCD, showing the existence of dysfunctional connectivity in the corticostriatothalamocortical circuitry. Improvements in spatial resolution of neuroimaging techniques may contribute to a better understanding of the neurocircuitry of OCD and other anxiety disorders.
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Affiliation(s)
- A Del Casale
- NESMOS (Neurosciences, Mental Health, and Sensory Organs) Department, School of Medicine and Psychology, Sapienza University and Sant'Andrea Hospital, Rome, Italy.
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Park JY, Lee J, Park HJ, Kim JJ, Namkoong K, Kim SJ. Alpha amplitude and phase locking in obsessive-compulsive disorder during working memory. Int J Psychophysiol 2011; 83:1-7. [PMID: 21963527 DOI: 10.1016/j.ijpsycho.2011.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 09/13/2011] [Accepted: 09/14/2011] [Indexed: 11/29/2022]
Abstract
Alpha event-related desynchronization (ERD) and synchronization are known to reflect brain activation and inhibition, respectively. Alpha phase locking seems to reflect the timing in the cortical process. In a previous study, lower alpha ERD was related to working memory in obsessive-compulsive disorder (OCD) patients than in controls during the retention and retrival phases, but not in the encoding phase. However, memory deficits in OCD patients are known to be related to executive failure during the encoding phase. Thus, focusing on the encoding phase, we tested the level of alpha amplitude and phase locking in OCD patients according to memory load. The EEGs of fifteen OCD patients and fifteen controls were recorded during a Sternberg working memory task. The behavioral performance of the OCD patients was normal. However, the OCD group yielded significantly lower ERD and stronger phase locking. As memory load rose, ERD and phase locking significantly increased in both groups. A difference in event-related alpha oscillation was observed in the encoding phase. Lower alpha modulation in the OCD patient simplied abnormality of the excitatory/inhibitory process in the brain, and increased phase locking might reflect excessive attentional excitability.
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Affiliation(s)
- Jin Young Park
- Department of Psychiatry, Yonsei University, College of Medicine, Seoul, Korea
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Thibault G, O’Connor KP, Stip E, Lavoie ME. Electrophysiological manifestations of stimulus evaluation, response inhibition and motor processing in Tourette syndrome patients. Psychiatry Res 2009; 167:202-20. [PMID: 19395047 PMCID: PMC3757001 DOI: 10.1016/j.psychres.2008.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 02/22/2008] [Accepted: 03/19/2008] [Indexed: 10/20/2022]
Abstract
Gilles de la Tourette syndrome (GTS) is a neuropsychiatric disorder with childhood onset presenting with multiple fluctuating motor tics and one or more phonic tics. A significant proportion of people suffering from GTS are still symptomatic in adulthood and present other emotional and cognitive difficulties, along with motor problems that often accompany these comorbid conditions. The nature of these difficulties is still poorly understood and multiple comorbidities are often inadequately controlled. The current study investigates both stimulus evaluation and motor processing in GTS while controlling for comorbidity. Fifteen adults with GTS and 20 control participants were matched on gender, laterality and intelligence. The P300 component, the no-go anteriorization (NGA) as well as the stimulus and response-locked lateralized-readiness potentials (S-LRP, R-LRP) were elicited during a stimulus-response compatibility (SRC) paradigm. The standard version of the Stroop Color-Word Test (SCWT) was also administered. Reaction times showed that participants with GTS processed both the SRC and the SCWT more rapidly than the control group, while producing a delayed P300 peak latency. The GTS group also showed faster S-LRP onset in response to the incompatible and faster processing of interference in the SCWT. There was also a tendency toward a greater frontal shift of the NGA in the GTS group. The P300 latency showed that with GTS patients, stimulus evaluation occurs later whereas the overlapping pre-motor response selection processes occur faster. Our findings are congruent with a probable cortical motor over-activation hypothesis of GTS involving faster motor program selection in processing conflicting SR configuration.
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Affiliation(s)
- Genevieve Thibault
- Centre de Recherche Fernand-Seguin and Hôpital Louis-H. Lafontaine, Montréal, Québec, Canada,Département de Psychologie, Université de Montréal, Montréal, Québec, Canada
| | - Kieron P. O’Connor
- Centre de Recherche Fernand-Seguin and Hôpital Louis-H. Lafontaine, Montréal, Québec, Canada,Département de Psychiatrie, Université de Montréal, Montréal, Québec, Canada,Département de Psychologie et Psychoéducation, Université du Québec en Outaouais, Gatineau, Québec, Canada
| | - Emmanuel Stip
- Centre de Recherche Fernand-Seguin and Hôpital Louis-H. Lafontaine, Montréal, Québec, Canada,Département de Psychiatrie, Université de Montréal, Montréal, Québec, Canada
| | - Marc E. Lavoie
- Centre de Recherche Fernand-Seguin and Hôpital Louis-H. Lafontaine, Montréal, Québec, Canada,Département de Psychiatrie, Université de Montréal, Montréal, Québec, Canada,Corresponding author. Fernand-Seguin Research Center, 7331, Hochelaga Street, Montréal, QC, Canada H1N 3V2. Tel.: +1 514 251 4015x3587; fax: +1 514 251 2617. (M.E. Lavoie)
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Clark CR, Galletly CA, Ash DJ, Moores KA, Penrose RA, McFarlane AC. Evidence-based medicine evaluation of electrophysiological studies of the anxiety disorders. Clin EEG Neurosci 2009; 40:84-112. [PMID: 19534302 DOI: 10.1177/155005940904000208] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We provide a systematic, evidence-based medicine (EBM) review of the field of electrophysiology in the anxiety disorders. Presently, electrophysiological studies of anxiety focus primarily on etiological aspects of brain dysfunction. The review highlights many functional similarities across studies, but also identifies patterns that clearly differentiate disorder classifications. Such measures offer clinical utility as reliable and objective indicators of brain dysfunction in individuals and indicate potential as biomarkers for the improvement of diagnostic specificity and for informing treatment decisions and prognostic assessments. Common to most of the anxiety disorders is basal instability in cortical arousal, as reflected in measures of quantitative electroencephalography (qEEG). Resting electroencephalographic (EEG) measures tend to correlate with symptom sub-patterns and be exacerbated by condition-specific stimulation. Also common to most of the anxiety disorders are condition-specific difficulties with sensory gating and the allocation and deployment of attention. These are clearly evident from evoked potential (EP) and event-related potential (ERP) electrical measures of information processing in obsessive compulsive disorder (OCD), post-traumatic stress disorder (PTSD), panic disorder (PD), generalized anxiety disorder (GAD) and the phobias. Other'ERP measures clearly differentiate the disorders. However, there is considerable variation across studies, with inclusion and exclusion criteria, medication status and control group selection not standardized within condition or across studies. Study numbers generally preclude analysis for confound removal or for the derivation of diagnostic biomarker patterns at this time. The current trend towards development of databases of brain and cognitive function is likely to obviate these difficulties. In particular, electrophysiological measures of function are likely to play a significant role in the development and subsequent adaptations of DSM-V and assist critically in securing improvements in nosological and treatment specificity.
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Affiliation(s)
- C Richard Clark
- Cognitive Neuroscience Laboratory, School of Psychology, Flinders University , Adelaide, Australia, Adelaide, Australia.
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Clinical correlates of word recognition memory in obsessive-compulsive disorder: an event-related potential study. Psychiatry Res 2008; 162:262-72. [PMID: 18308520 DOI: 10.1016/j.pscychresns.2007.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2007] [Accepted: 04/08/2007] [Indexed: 11/23/2022]
Abstract
Memory disturbances found in obsessive-compulsive disorder (OCD) may partially be related to dysfunction of cortico-subcortical circuits. However, it is still unknown how OCD symptomatology is related to memory processing. To explore this question, event-related potentials (ERPs) were recorded in a continuous word-recognition paradigm in OCD patients with either severe or moderate scores on the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) (group S and group M, n=8 each) and in normal healthy controls (n=16). Typically ERPs to repeated items are characterized by more positive waveforms beginning approximately 250 ms post-stimulus. This "old/new effect" has been shown to be relevant for memory processing. The early old/new effect (ca. 300-500 ms) with a frontal distribution is proposed to be a neural correlate of familiarity-based recognition. The late old/new effect (post-500 ms) is assumed to reflect conscious memory retrieval processes. The OCD group S showed a normal early old/new effect and a reduced late old/new effect compared with group M and the control group, but no difference was found between group M and the control group. Source analyses for the late old/new effect showed statistically reduced cerebral activation in the anterior cingulate for OCD group S in contrast to the control group. Additionally, the early old/new effect in OCD group S was negatively correlated with the Y-BOCS total scores, and the late old/new effect was negatively correlated with obsession sub-scores. The severely, not moderately, ill OCD patients showed an impaired conscious recollection of the word-to-be-remembered, which suggested an impairment of working memory capacity in these patients due to a dysfunction in the frontal and cingulate cortex.
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EEG-vigilance differences between patients with borderline personality disorder, patients with obsessive-compulsive disorder and healthy controls. Eur Arch Psychiatry Clin Neurosci 2008; 258:137-43. [PMID: 17990048 DOI: 10.1007/s00406-007-0765-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Accepted: 09/11/2007] [Indexed: 10/22/2022]
Abstract
The regulation of brain activation, as assessed with the EEG, is a state modulated trait. A decline to lowered EEG-vigilance states has been found to be associated with emotional instability in older studies, but has not been systematically studied in patients with borderline personality disorder (BPD). Twenty unmedicated BPD patients were compared to 20 unmedicated patients with obsessive-compulsive disorder (OCD) as well as 20 healthy controls concerning their EEG-vigilance regulation over a 5-min period assessed with an algorithm classifying every artefact-free 2-s EEG segment into the EEG-vigilance state (A1-A3, B (=non-A)). If the alpha power was posterior more than 55% of the whole alpha power (anterior + posterior) in the artefact-free EEG-segments, that segment was marked as A1, if it was anterior more than 55% of the whole alpha power, as A3. For A2 the following rule was defined: Posterior or anterior alpha between 50 and 55% of the whole alpha power.BPD patients showed significantly lower rates of EEG-vigilance state A compared to OCD patients, indicating a lowered EEG-vigilance. All three groups showed a decrease in the rate of EEG-vigilance state A over the 5 min recording period in line with a lowering of vigilance. The study provides evidence for a less stable regulation of EEG-vigilance in BPD compared to OCD patients and is in line with concepts postulating that the behavioural pattern with sensation seeking and impulsivity in BPD has a compensatory and autoregulatory function to stabilize activation of the CNS.
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Hashimoto T, Shimizu E, Koike K, Orita Y, Suzuki T, Kanahara N, Matsuzawa D, Fukami G, Miyatake R, Shinoda N, Fujisaki M, Shirayama Y, Hashimoto K, Iyo M. Deficits in auditory P50 inhibition in obsessive-compulsive disorder. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:288-96. [PMID: 17884267 DOI: 10.1016/j.pnpbp.2007.08.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Revised: 08/20/2007] [Accepted: 08/20/2007] [Indexed: 01/15/2023]
Abstract
Obsessive-compulsive disorder (OCD) is considered to involve abnormalities in inhibitory processes including gating systems. Auditory P50 inhibition, which is assessed by using a paired auditory stimulus paradigm to record P50 mid-latency evoked potential, is assumed to reflect sensory gating. In the present study, we investigated auditory P50 inhibition in subjects with OCD, and examined the relationship between P50 and clinical variables or neuropsychological performance. Twenty-six subjects with OCD and 26 age- and sex-matched healthy controls received P50 recording and neuropsychological tests. In the OCD subjects, we also evaluated clinical features including OC symptoms and subtypes of the disorder. P50 T/C ratios were significantly higher in OCD subjects than in control subjects (t=2.9, df=50, p=0.006). Compared to the controls, the OCD subjects performed significantly worse on the Symbol Digit Modalities Test (SDMT) and the Trail Making Test (TMT). There were no correlations between P50 T/C ratios and clinical variables or the results of neuropsychological tests. Our findings suggest that sensory gating deficits may be involved in the pathophysiology of OCD in a different way from clinical symptoms and executive attention dysfunction.
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Affiliation(s)
- Tasuku Hashimoto
- Department of Psychiatry, Chiba University Graduate School of Medicine, Chiba, Japan
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Roth RM, Saykin AJ, Flashman LA, Pixley HS, West JD, Mamourian AC. Event-related functional magnetic resonance imaging of response inhibition in obsessive-compulsive disorder. Biol Psychiatry 2007; 62:901-9. [PMID: 17511967 DOI: 10.1016/j.biopsych.2006.12.007] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Revised: 12/07/2006] [Accepted: 12/08/2006] [Indexed: 11/20/2022]
Abstract
BACKGROUND Obsessive-compulsive disorder (OCD) has been hypothesized to involve inhibitory control dysfunction related to abnormal frontal-striatal-thalamic-cortical (FSTC) circuitry. METHODS We examined the neural substrates of response inhibition in adults with OCD using functional magnetic resonance imaging (fMRI) and a go/no-go task. Participants consisted of 12 adults with OCD and 14 healthy comparison subjects. RESULTS During response inhibition, healthy adults showed predominantly right-hemisphere activation including the right inferior frontal gyrus, whereas the patient group showed a more diffuse, bilateral pattern of activation. Furthermore, the OCD group demonstrated less activation than the comparison group in several right-hemisphere regions during response inhibition, including inferior and medial frontal gyri. Symptom severity was inversely correlated with activation in right orbitofrontal and anterior cingulate gyri and positively correlated with thalamic and posterior cortical activations. Neither depressed mood nor medication status could account for the results. CONCLUSIONS These findings indicate that adults with OCD demonstrate underactivation of FSTC circuitry during response inhibition. Results suggest that the thalamus and related circuitry may play a role in the expression or intensity of OCD symptoms, whereas right frontal subregions may be involved in the suppression of symptoms.
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Affiliation(s)
- Robert M Roth
- Brain Imaging Laboratory, Departments of Psychiatry and Radiology, Dartmouth Medical School, Lebanon, New Hampshire 03756-0001, USA.
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Ruchsow M, Reuter K, Hermle L, Ebert D, Kiefer M, Falkenstein M. Executive control in obsessive-compulsive disorder: event-related potentials in a Go/Nogo task. J Neural Transm (Vienna) 2007; 114:1595-601. [PMID: 17610122 DOI: 10.1007/s00702-007-0779-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2007] [Accepted: 06/14/2007] [Indexed: 11/27/2022]
Abstract
Obsessive-compulsive disorder (OCD) has been related to a hyperactive cortico-striatal-pallidal-thalamic circuitry resulting clinically in an impaired inhibition of repetitive thoughts and behaviors. We examined thirteen patients with OCD and thirteen age-, sex-, and education matched healthy controls using event-related potentials (ERPs). Participants performed a hybrid flanker-Go/Nogo task while multichannel EEG was recorded. Our study focused on two ERP components: the Nogo-N2 and the Nogo-P3, which have been discussed in the context of response inhibition and response conflict. Artifact-free EEG-segments were used to compute ERPs on correct Go trials (button press) and correct Nogo trials (no button press), separately. Patients with OCD showed enhanced (more negative) Nogo-N2 amplitudes than controls, and a significant difference in amplitudes between Nogo-N2 and Go-N2 trials (more negative for Nogo trials) at central midline electrode positions. However, groups did not differ with regard to the Nogo-P3 and Go-P3. The present study replicates and extends previous findings of altered executive control processes in OCD patients.
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Affiliation(s)
- M Ruchsow
- Department of Psychiatry, Christophsbad, Göppingen, Germany.
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Herrmann MJ, Jacob C, Unterecker S, Fallgatter AJ. Reduced response-inhibition in obsessive-compulsive disorder measured with topographic evoked potential mapping. Psychiatry Res 2003; 120:265-71. [PMID: 14561438 DOI: 10.1016/s0165-1781(03)00188-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Recent neuroimaging studies have suggested that a hyperactivity of the frontal-striate neuronal circuits, including the orbitofrontal cortex and the basal ganglia, mediates the symptomatology of obsessive-compulsive disorder (OCD). However, there is also some evidence that the superior frontal cortex is less activated in OCD, and this local hypoactivity has been shown to be negatively associated with the symptomatology. As the superior frontal cortex is believed to be involved in inhibitory control, this study investigated the brain electrical activity during response inhibition in OCD. Twelve patients with OCD and 12 healthy controls performed a cued Go-NoGo task (continuous performance test), while event-related potentials were registered with 21 electrodes. Patients reacted significantly faster than controls, but did not differ from controls regarding the error rate. As a main result, we found a reduced frontal activity during the NoGo condition in OCD, which was condensed in a reduced anteriorisation of the brain electrical field. We suggest that this inhibitory deficit in OCD has a major contribution to the pathophysiology of OCD, which is underscored by the fact that the anteriorisation during the NoGo condition (NGA) was negatively correlated with the symptomatology as measured by the Yale-Brown Obsessive-Compulsive Scale.
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Affiliation(s)
- Martin J Herrmann
- Psychiatric Neurophysiology, Department of Psychiatry and Psychotherapy, University Hospital of Psychiatry and Psychotherapy, Füchsleinstrasse 15, Würzburg 97080, Germany.
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Kim MS, Kang SS, Youn T, Kang DH, Kim JJ, Kwon JS. Neuropsychological correlates of P300 abnormalities in patients with schizophrenia and obsessive-compulsive disorder. Psychiatry Res 2003; 123:109-23. [PMID: 12850250 DOI: 10.1016/s0925-4927(03)00045-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The cognitive significance of P300 abnormalities in schizophrenia and obsessive-compulsive disorder (OCD) was investigated. P300 was measured by an auditory oddball paradigm, in which a series of standard tones (1000 Hz) and target tones (1500 Hz) were presented. The subject's task was to count the number of the presented target tones. Cognitive functions were evaluated by neuropsychological tests, which were chosen to be sensitive to frontal and temporal dysfunction. Twenty-two schizophrenic patients, 19 OCD patients and 21 healthy controls participated. Event-related potentials measured at 15 electrode sites, which consisted of five levels on the left-right dimension and three levels on the anterior-posterior dimension, were included in the statistical analysis. P300 amplitudes on all 15 electrode sites were significantly smaller in schizophrenic and OCD patients than in the controls. Schizophrenic patients performed poorly on almost all neuropsychological tests, while OCD patients showed impaired performance on the Rey-Osterrieth Complex Figure Test and on a controlled oral word association test. In schizophrenic patients, P300 amplitude was associated with performance on verbal memory and learning by the Luria-Nebraska Neuropsychological Battery, while for OCD patients, P300 amplitude was related to the Trail Making Test, Part B response time. These results indicate that schizophrenic patients have generalized cognitive impairments, which are substrated by a wide range of cortical dysfunctions. The major cognitive deficits observed in OCD patients were impairments of controlled attention and self-guided, flexible behavior, which are mediated by the fronto-striatal system. The neurophysiological mechanisms underlying P300 abnormalities observed in schizophrenic and OCD patients are discussed.
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Affiliation(s)
- Myung-Sun Kim
- Department of Psychiatry, Seoul National University College of Medicine and Clinical Research Institute, Seoul National University Hospital, Seoul, South Korea
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Kivircik BB, Yener GG, Alptekin K, Aydin H. Event-related potentials and neuropsychological tests in obsessive-compulsive disorder. Prog Neuropsychopharmacol Biol Psychiatry 2003; 27:601-6. [PMID: 12787845 DOI: 10.1016/s0278-5846(03)00047-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Previous studies have provided evidence from event-related potentials (ERPs) and neuropsychological testing of abnormal cognitive processing in obsessive-compulsive disorder (OCD). The aim of this study was to further characterize the cognitive functions of the patients with OCD by utilizing ERPs and neuropsychological tests. METHODS ERPs were recorded in a group of 31 drug-free OCD patients without depression and 30 normal controls following verbal auditory stimuli using an oddball paradigm. The specific neuropsychological tests administered to assess cognitive functions in all participants were the Stroop Test, Trail Making Test, Design Fluency Test, Controlled Word Association Test (Verbal Fluency test). RESULTS The patient group showed shorter P300 duration compared to normal controls. In neuropsychological tests, no significant differences were found between the two groups. Negative correlations between Stroop duration and P300 amplitudes in occipital, parietal, and temporal anterior regions were observed. CONCLUSION Shorter P300 duration may indicate an acceleration in the P300 process, and speeding of cognitive processing, dysfunction of cortico-subcortical circuits, or some combination of all of the above.
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Affiliation(s)
- Berna Binnur Kivircik
- Department of Psychiatry, Dokuz Eylül University School of Medicine, Inciralti, Izmir, Turkey.
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35
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36
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Mavrogiorgou P, Juckel G, Frodl T, Gallinat J, Hauke W, Zaudig M, Dammann G, Möller HJ, Hegerl U. P300 subcomponents in obsessive-compulsive disorder. J Psychiatr Res 2002; 36:399-406. [PMID: 12393309 DOI: 10.1016/s0022-3956(02)00055-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Hyperactivity in the frontal cortex, leading to acceleration of attentional and cognitive processes, is discussed as pathogenetic factor in obsessive-compulsive disorder (OCD), as supported by findings of neuroimaging studies. This dysfunction in patients with OCD could be reflected by the auditory event-related P300 component, since one subcomponent of the P300, the so-called P3a, is mainly generated in frontal regions. The P300 of 21 patients with OCD free of medication and 21 age- and sex-matched healthy controls was studied, and dipole source analysis was used, allowing the separation of the subcomponents P3a and P3b with high reliability. No difference concerning the P3a between OCD and healthy subjects was found. OCD patients, however, showed a larger P3b amplitude and a shorter P3b latency (only right hemisphere) as well as a shorter reaction time to target tones as the healthy controls. Since the P3b, generated mainly in the temporo-parietal junction, is related to attentional and higher cognitive functions, whereas the P3a is more related to unspecific orienting reactions, the P3b abnormalities found in these patients could be an electrophysiological correlate of overfocussed attention and faster cognitive processes in OCD, possibly due to higher arousal and noradrenergic function. Regarding the findings with small P300 amplitudes and long latencies in most of the other psychiatric patients, it is remarkable that OCD is one of the few psychiatric diseases being characterized by larger P3b amplitudes and shorter latencies.
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Affiliation(s)
- Paraskevi Mavrogiorgou
- Department of Psychiatry, Section of Clinical Neurophysiology and Outpatient Clinic for Obsessive-Compulsive Disorder, Ludwig-Maximilians University Munich, Germany
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37
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Hansenne M. [The p300 cognitive event-related potential. II. Individual variability and clinical application in psychopathology]. Neurophysiol Clin 2000; 30:211-31. [PMID: 11013895 DOI: 10.1016/s0987-7053(00)00224-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The P300 wave is one of the cognitive components of the event-related potential (ERP) that is used to investigate the cognitive processes, and which can be used to study patient populations with a variety of psychiatric disorders. Its clinical utility has been increased by the identification of factors that contribute to the variability in its amplitude and latency. However, its value as a diagnostic index has not been entirely established. It can provide a useful recording of patients' information processing, and indicate the severity of the clinical state and its possible evolution. It can also assist in determining what therapeutic approach to adopt. In the present review, the findings in the literature concerning interindividual variation in the P300 wave are first described; several variables significantly influence the amplitude and latency of this wave, such as age, gender, intelligence and personality. Following this, the relevance of the data in the literature on the clinical applications of P300 in psychopathology is examined, including the studies undertaken to obtain an objective diagnostic index for mental disorders and also those carried out to assess the problems concerning the interpretation of information connected with the mental pathologies examined. P300-associated findings on dementia, schizophrenia, depression, alcoholism, drug addiction, anxiety disorders (panic disorder, obsessive-compulsive disorder, and post-traumatic stress syndrome) and on personality disorders (schizoid, antisocial or borderline personality disorder) have been examined in detail.
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Affiliation(s)
- M Hansenne
- Université de Liège, service de psychiatrie et de psychologie médicale, CHU du Sart-Tilman (B35), Belgique
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38
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Abstract
This review examines the extent to which neurological signs are more prevalent in schizophrenia patients, compared to mood-disorder patients and healthy subjects, and whether there is a pattern in any of the differences that may be found. We included 17 studies and calculated the weighted mean prevalence of 30 neurological signs. The prevalence of most signs appears to be significantly different between schizophrenia patients and normal controls, but there are fewer differences between schizophrenia and mood-disorder patients. Several signs - poor stereognosis and rhythm tapping - are even more prevalent in mood-disorder patients than in schizophrenia patients. Only lack of extinction, dysdiadochokinesia, poor tandem walk, finger-thumb-opposition and articulation are significantly more prevalent in schizophrenia compared to mood-disorder patients. Impaired motor coordination seems most specific to schizophrenia. The discriminating power of motor sequencing still needs to be studied. So far, there is no evidence of a clearly interpretable pattern of neurological signs distinguishing schizophrenia patients from mood-disorder patients.
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Affiliation(s)
- M P Boks
- Department of Psychiatry, University Hospital Groningen, P.O. Box 30. 001, 9700 RB, Groningen, The Netherlands.
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Pujol J, Torres L, Deus J, Cardoner N, Pifarré J, Capdevila A, Vallejo J. Functional magnetic resonance imaging study of frontal lobe activation during word generation in obsessive-compulsive disorder. Biol Psychiatry 1999; 45:891-7. [PMID: 10202577 DOI: 10.1016/s0006-3223(98)00099-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Functional imaging studies have demonstrated abnormal patterns of brain activity in obsessive-compulsive disorder, which consistently suggest the alteration of frontal lobe functioning. We performed a brain activation study in obsessive-compulsive disorder using a cognitive task involving the frontal lobes. METHODS Twenty patients and 20 healthy control subjects were assessed with functional magnetic resonance imaging during a phonologically guided word generation task. The study analysis was based on the comparison of group average time-course functional changes occurring at the site of largest frontal cortex activation during alternating rest and task periods. RESULTS In terms of relative signal changes, patients showed a significantly greater activation during word generation and a defective suppression of this activation during the following rest period. Both abnormal imaging findings significantly correlated with the severity of the clinical process assessed by the Yale-Brown Obsessive-Compulsive Scale. CONCLUSIONS The results indicate that functional magnetic resonance imaging during cognitive challenge may be useful to reveal distinctive features of latent brain dysfunction in obsessive-compulsive disorder.
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Affiliation(s)
- J Pujol
- Magnetic Resonance Center of Pedralbes, Barcelona, Spain
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40
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Morault P, Guillem F, Bourgeois M, Paty J. Improvement predictors in obsessive-compulsive disorder. An event-related potential study. Psychiatry Res 1998; 81:87-96. [PMID: 9829654 DOI: 10.1016/s0165-1781(98)00091-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The treatment of patients with obsessive-compulsive disorder gives variable and unpredictable results. Numerous clinical features have been investigated as potential predictors of medication response but without consistent results. Preliminary findings have shown that some impairments of pre-treatment event-related potentials (ERPs) could be associated with future treatment outcome (Morault et al., 1997). The present study aimed to confirm the relationships between ERPs and treatment efficacy with larger sample sizes. ERP components were elicited during a verbal auditory 'oddball' paradigm and were recorded in 21 unmedicated patients compared to 21 control subjects. After a pharmacological treatment, the disorder improved in 12 patients. Pre-treatment ERP data were retrospectively compared between treatment responders, non-responders and control subjects. Patients who were to respond favorably to treatment had significantly reduced N2 amplitude and shorter N2 and P3 latencies compared to non-responders and control subjects. In contrast, no difference was shown between non-responders and control subjects. Our findings provide evidence for abnormalities of ERPs which could be considered as potential predictors of treatment response in patients with OCD. These results need to be tested in a prospective protocol.
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Affiliation(s)
- P Morault
- Unité d'Investigations Cliniques Approfondies, Hôpital Ch. Perrens, and Université de Bordeaux 2, France.
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41
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de Groot CM, Torello MW, Boutros NN, Allen R. Auditory event-related potentials and statistical probability mapping in obsessive-compulsive disorder. CLINICAL EEG (ELECTROENCEPHALOGRAPHY) 1997; 28:148-54. [PMID: 9241468 DOI: 10.1177/155005949702800306] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The current exploratory investigation was undertaken to replicate and extend previous findings of auditory event related potentials (ERPs) observed in obsessive-compulsive disorder (OCD). Similar to previous ERP studies, this study revealed a decreased slow wave (SW) (post P300) latency, a trend towards decreased P300 latency and a greater N200 amplitude in OCD subjects than in controls. In addition, the chronicity of OCD symptoms was correlated with the 140-170 millisecond integrated amplitude and the severity of OCD symptoms correlated with the 386-438 millisecond integrated amplitude. Current findings lend additional support to evidence suggesting OCD represents, in part, hyperarousal of the cortex.
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Affiliation(s)
- C M de Groot
- Department of Psychiatric Medicine, East Carolina University, Greenville, North Carolina 27858-4354, USA
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42
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Morault PM, Bourgeois M, Laville J, Bensch C, Paty J. Psychophysiological and clinical value of event-related potentials in obsessive-compulsive disorder. Biol Psychiatry 1997; 42:46-56. [PMID: 9193741 DOI: 10.1016/s0006-3223(96)00228-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To investigate brain correlates of cognitive function in obsessive-compulsive disorder (OCD), event-related potentials (ERPs) were recorded in a group of thirteen unmedicated OCD patients and thirteen normal controls for verbal auditory stimuli in an oddball paradigm. The patients showed longer latencies of the N1 and P2, shorter latency of the P3, and reduced amplitude of the N2. These results suggest that OCDs stress the speed of task-dependent processes (i.e., by showing shorter N2 and P3 latencies) and have impairment of task-independent ones (i.e., by showing longer N1 and P2 latencies and reduced N2 amplitude). The components were more positive in the left hemisphere in OCDs and in the right hemisphere in normal controls. Future responders to treatment had significantly reduced N2 and enhanced P3 amplitudes relative to future nonresponders. So ERPs might provide psychophysiological profiles in OCDs with clinical and pharmacological implications.
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Affiliation(s)
- P M Morault
- Laboratoire de Biologie Appliquée, Université de Bordeaux II, France
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Oades RD, Dittmann-Balcar A, Zerbin D, Grzella I. Impaired attention-dependent augmentation of MMN in nonparanoid vs paranoid schizophrenic patients: a comparison with obsessive-compulsive disorder and healthy subjects. Biol Psychiatry 1997; 41:1196-210. [PMID: 9171910 DOI: 10.1016/s0006-3223(96)00214-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Mismatch negativity (MMN), in the deviant-minus-standard event-related potential (ERP) difference-waveform, may represent a working memory trace of the tone difference. Most but not all studies find MMN reduced in schizophrenic patients. This report investigates if differences may be attributable to experimental condition (diffuse vs focused attention), component identification (N1-like vs N2-like), topographic distribution, and clinical condition (with/without paranoid-hallucinatory symptoms, PH/NP). Comparisons were made for 12 PH, 12 NP schizophrenic patients with 13 obsessive compulsive and 25 normal control subjects. Frontal MMN reduction in schizophrenics largely resulted from an absence of an increase in focused attention conditions as in comparison groups. But there was a marked temporal activity locus in NP patients. These features were not reflected in other components except for a visible but nonsignificant N1-like temporal locus in NP patients. Further, schizophrenic patients did not show an increase in late positivity with focused attention like the comparison groups. The results show that so-called automatic processing deficits (amount and locus of MMN) are best seen in situations requiring the activation of controlled attentional processes. It is suggested that impaired processing of irrelevant stimuli and reduced frontal MMN in NP patients may reflect reduced dopaminergic responsivity.
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Affiliation(s)
- R D Oades
- University Clinic for Child and Adolescent Psychiatry, Essen, Germany
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44
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Strik WK, Fallgatter AJ, Stoeber G, Franzek E, Beckmann H. Specific P300 features in patients with cycloid psychosis. Acta Psychiatr Scand 1997; 95:67-72. [PMID: 9051164 DOI: 10.1111/j.1600-0447.1997.tb00376.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In previous studies, low amplitudes and asymmetrical topography with right-sided peaks of the P300-evoked response have been repeatedly described in schizophrenic patients. A sample consisting of 18 patients with cycloid psychosis fulfilling the criteria of Perris and Brockington and 18 controls was investigated with a standard auditory odd-ball paradigm and multichannel evoked potential recordings. Patients had normal P300 topographies and latencies but significantly higher amplitudes than the controls. Higher than normal P300 amplitudes have not been described in any other psychiatric disorder until now, and indicate an enhanced level of arousal. Future studies are expected to shed light on the question of whether high P300 amplitudes are transitory sequelae of the acute psychotic episode or a trait of cycloid psychosis.
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Affiliation(s)
- W K Strik
- Department of Psychiatry, University of Würzburg, Germany
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45
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Pallanti S, Grecu LM, Gangemi PF, Massi S, Parigi A, Arnetoli G, Quercioli L, Zaccara G. Smooth-pursuit eye movement and saccadic intrusions in obsessive-compulsive disorder. Biol Psychiatry 1996; 40:1164-72. [PMID: 8931920 DOI: 10.1016/s0006-3223(95)00607-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Although several reports agree that smooth-pursuit eye movement (SPEM) is abnormal in some obsessive-compulsive disordered (OCD) patients, differences between treatments and lack of accuracy in control selection make the results controversial. Although reduced gain seems the most accepted abnormality, the characteristics of saccadic disruption of smooth pursuit are as yet unspecified. SPEMs in 21 OCD patients (DSM-III-R) and 21 healthy subjects recruited from the community were studied through a multiple target velocity task . The two groups were individually matched on age, gender, and level of education. None of the subjects had a history of substance dependence apart from the smokers who refrained from smoking in the 2 hours prior to the test. A significantly lower SPEM gain and increased number and frequency of anticipatory saccades (ASs) was found in OCD patients as compared with control subjects. No relationship emerged between eye movement abnormalities and clinical variables explored.
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Affiliation(s)
- S Pallanti
- Istituto di Neuroscienze, University of Florence, Italy
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46
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Strik WK, Fallgatter AJ, Stoeber G, Franzek E, Beckmann H. Specific P300 features in patients with cycloid psychosis. Acta Psychiatr Scand 1996; 94:471-6. [PMID: 9021002 DOI: 10.1111/j.1600-0447.1996.tb09893.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In previous studies, low amplitudes and asymmetrical topography with right-sided peaks of the P300-evoked response have been repeatedly described in schizophrenic patients. A total of 18 patients with cycloid psychosis fulfilling the criteria of Perris and Brockington and 18 controls were investigated with a standard auditory odd-ball paradigm and multichannel-evoked potential recordings. Patients had normal P300 topographies and latencies but significantly higher amplitudes than controls. Higher than normal P300 amplitudes have not been described in any other psychiatric disorder until now, and indicate an enhanced level of arousal. Future studies are expected to shed light on the question of whether high P300 amplitudes are transitory sequelae of the acute psychotic episode or a trait of cycloid psychosis.
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Affiliation(s)
- W K Strik
- Department of Psychiatry, University of Wuerzburg, Germany
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47
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Towey JP, Tenke CE, Bruder GE, Leite P, Friedman D, Liebowitz M, Hollander E. Brain event-related potential correlates of overfocused attention in obsessive-compulsive disorder. Psychophysiology 1994; 31:535-43. [PMID: 7846214 DOI: 10.1111/j.1469-8986.1994.tb02346.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A hypothesis of overfocused attention in obsessive-compulsive disorder was investigated by measuring auditory event-related potentials (ERPs) during a selective attention task. Unmedicated patients (n = 18) with this disorder showed significantly larger attention-related processing negativity (PN), with earlier onset and longer duration, than did normal controls (n = 15). In the N200 region (160-250 ms), PN was larger in patients with fewer nonspecific neurological soft signs. This task, however, did not yield any group differences in mismatch negativity (N2a) or classical N200 (N2b). P300 amplitudes for attended targets were smaller for patient than normal groups, but the reverse was true for P300 and positive slow wave amplitudes for unattended nontargets. Collectively, these ERP abnormalities suggest a misallocation of cognitive resources. Because of the importance of the frontal lobe in the control of selective attention, PN enhancement in patients with obsessive-compulsive disorder may reflect hyperactivation of this region. This conceptualization is consistent with recent functional neuroimaging findings.
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Affiliation(s)
- J P Towey
- Department of Biopsychology, New York State Psychiatric Institute, NY 10032
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