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Flasbeck V, Hirsch J, Petrak F, Meier JJ, Herpertz S, Gatermann S, Juckel G. Microbiome composition and central serotonergic activity in patients with depression and type 1 diabetes. Eur Arch Psychiatry Clin Neurosci 2024; 274:1177-1186. [PMID: 37847374 PMCID: PMC11226557 DOI: 10.1007/s00406-023-01694-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/20/2023] [Indexed: 10/18/2023]
Abstract
The role of gut-brain axis functioning gains growing attention in research on the pathophysiology of major depressive disorders. Here, especially consequences of altered microbiota composition on tryptophan metabolism resulting in altered serotonergic neurotransmission in the central nervous system (CNS) have reached a central position. Previous research, however, mainly focused on either microbiota and peripheral serotonin levels or central serotonergic neurotransmission. The present study aimed to combine the analysis of microbiota composition and central serotonergic activity using a valid neurophysiological indicator. We recruited 19 adult patients with type 1 diabetes and depression (D + D; 7 males), 19 patients with type 1 diabetes (D-; 7 male), and 20 healthy participants (HC; 7 males). Next to the analysis of fecal microbiota regarding α- and β-diversity, the loudness dependence of auditory evoked potential (LDAEP) was investigated, a non-invasive measurement of central serotonergic activity. High α-diversity was associated with high LDAEP, i.e., low serotonergic activity, in patients with diabetes and additional depression. Furthermore, relative abundances of bacterial families belonging to Bacteroidetes, Proteobacteria and Firmicutes were shown to have an impact on central serotonergic activity. This finding was supported by a tendency indicating an association of central serotonergic activity with the Bacteroidetes-Firmicutes ratio in both patients' groups. Together, this data suggests that the guts' microbiota composition might play an important role in regulating the central serotonergic activity in the brain.
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Affiliation(s)
- Vera Flasbeck
- Department of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Bochum, Germany
| | - Julia Hirsch
- Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Alexandrinenstr.1, 44791, Bochum, Germany
| | - Frank Petrak
- Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Alexandrinenstr.1, 44791, Bochum, Germany
| | - Juris J Meier
- Diabetes Division, Katholisches Klinikum Bochum, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Stephan Herpertz
- Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Alexandrinenstr.1, 44791, Bochum, Germany
| | - Sören Gatermann
- German National Reference Centre for Multidrug-Resistant Gram-Negative Bacteria, Department of Medical Microbiology, Ruhr-University Bochum, Bochum, Germany
| | - Georg Juckel
- Department of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Bochum, Germany.
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Dib M, Lewine JD, Abbott CC, Deng ZD. Electroconvulsive Therapy Modulates Loudness Dependence of Auditory Evoked Potentials: A Pilot MEG Study. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.04.26.24306462. [PMID: 38903065 PMCID: PMC11188126 DOI: 10.1101/2024.04.26.24306462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Electroconvulsive therapy (ECT) remains a critical intervention for treatment-resistant depression (MDD), yet its neurobiological underpinnings are not fully understood. This pilot study utilizes high-resolution magnetoencephalography (MEG) in nine depressed patients receiving right unilateral ECT, to investigate the changes in loudness dependence of auditory evoked potentials (LDAEP), a proposed biomarker of serotonergic activity, following ECT. We hypothesized that ECT would reduce the LDAEP slope, reflecting enhanced serotonergic neurotransmission. Contrary to this, our findings indicated a significant increase in LDAEP post-ECT ( t 8 = 3.17, p = .013). The increase in LDAEP was not associated with changes in depression severity or cognitive performance, as assessed by the Hamilton Depression Rating Scale (HAMD-24) and Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). We discussed potential mechanisms for the observed increase, including ECT's impact on serotonergic, dopaminergic, glutamatergic, and GABAergic receptor activity, neuroplasticity involving brain-derived neurotrophic factor (BDNF), and inflammation modulators such as TNF- alpha . Our results suggest a complex interaction between ECT and these neurobiological systems, rather than a direct reflection of serotonergic neurotransmission.
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Portnova GV, Proskurnina EV. Acoustic and Subjective Basis of Emotional Perception in Comatose Patients: A Comparative Study. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE : THE OFFICIAL SCIENTIFIC JOURNAL OF THE KOREAN COLLEGE OF NEUROPSYCHOPHARMACOLOGY 2023; 21:701-714. [PMID: 37859443 PMCID: PMC10591159 DOI: 10.9758/cpn.22.1028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 02/15/2023] [Accepted: 03/12/2023] [Indexed: 10/21/2023]
Abstract
Objective : The acoustic stimulation in consciousness patients may improve the diagnosis assessment and the effectiveness of rehabilitation procedures. We aimed to investigate the event-related potential (ERP) response to emotional auditory stimuli in comatose patients. Methods : We measured the nonlinear and linear electroencephalogram (EEG) features, prepared the acoustic analysis of stimuli parameters, and assessed the subjective emotional rates of stimuli characteristics. Results : Patients with better outcomes had recognizable ERP responses and significant changes of the nonlinear EEG features to emotional sounds, unlike patients with worse outcomes. The response of comatose patients was attributed to acoustical features of emotional sounds, whereas the EEG response of healthy subjects was associated with their subjective feelings. The comatose patients demonstrated the variable EEG activity for neutral and emotional sounds. Conclusion : Thus, the EEG reactivity followed the better outcome of comatose patients to emotional stimuli. The study assumed the substantial differences of emotional stimuli perception in the healthy and unconscious brain.
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Affiliation(s)
- Galina V. Portnova
- Laboratory of Human Higher Nervous Activity, Institute of Higher Nervous Activity and Neurophysiology of the Russian Academy of Sciences, Moscow, Russia
- Department of Scientific Activities, Pushkin Institute of Russian Language, Moscow, Russia
| | - Elena V. Proskurnina
- Laboratory of Molecular Biology, Research Centre for Medical Genetics, Moscow, Russia
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Kantar D, Acun AD, Er H, Afsar E, Yargıcoglu P. Anxiolytic-like effects of extremely low frequency electric field in stressed rats: involvement of 5-HT2C receptors. Int J Radiat Biol 2022; 99:1473-1482. [PMID: 35675556 DOI: 10.1080/09553002.2022.2087929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/03/2022] [Accepted: 05/22/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Possible modulatory effects of noninvasive brain stimulation have gained interest recently. In our study, the effect of low frequency electric fields (LF-EF) on stress-induced electrophysiological, behavioral changes and the possible involvement of serotonergic 5-HT2C receptors were investigated. MATERIALS AND METHODS A total of eight groups including the control groups were formed by applying LF-EF with or without a 5-HT2C receptor agonist to naïve or acute stress exposed rats to demonstrate the effects of LF-EF. LF-EF administration at 10 kV/m was started 30 min before acute stress application and lasted for 1 h in total. Anxiety levels and social interaction were evaluated using the elevated plus maze test and social interaction test, respectively. Auditory evoked potentials (AEP) were recorded by using ascending loudness paradigms. Loudness dependence AEP (LDAEP) was calculated by using amplitude values to analyze serotonergic transmission. Serotonin and glucocorticoid levels were measured in the frontal cortex and hippocampus. RESULTS It was observed that the applied LF-EF reduced the anxiety behavior, and attenuated the LDAEP responses in stress and/or 5-HT2C receptor agonist applied groups. In parallel, an increase in serotonin levels and a decrease in glucocorticoid levels were observed. However, LF-EF exposure was ineffective in impaired social interaction. CONCLUSIONS Our findings show that 10 kV/m LF-EF administration may modulate the neural network and physiological responses associated with mild acute stress. 5-HT2C receptor dependent functions are thought to play a role in the anxiolytic effect of LF-EF.
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Affiliation(s)
- Deniz Kantar
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Alev Duygu Acun
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Hakan Er
- Department of Medical Imaging Techniques, Vocational School of Health Services, Akdeniz University, Antalya, Turkey
| | - Ebru Afsar
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Istanbul Kültür University, Istanbul, Turkey
| | - Piraye Yargıcoglu
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
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Bamberg C, Flasbeck V, Juckel G, Brüne M. Loudness Dependence of Auditory-evoked Potentials, a Marker of Central Serotonergic Activity, is Affected by Fasting and Selective Uptake of Food. Clin EEG Neurosci 2021; 52:391-399. [PMID: 33729043 DOI: 10.1177/15500594211000925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Serotonin is an important neuromodulator involved in many physiological processes including mood and satiety. In the brain, serotonin is manufactured from tryptophan, as serotonin itself cannot cross the blood-brain barrier. Previous research has shown that blood-tryptophan levels increase upon ingestion of carbohydrates and decrease upon protein consumption. How this translates into serotonin availability is as yet under-researched. Therefore, we examined the effect of fasting versus consuming carbohydrates or protein on central serotonergic activity using a repeated-measures crossover design in a sample of 37 healthy men. The loudness dependence of auditory-evoked potentials (LDAEP) serves as a noninvasive method to study central serotonergic activity. Blood-glucose levels and mood changes were also monitored before and after the nutritional intervention. The intervention had a significant nutrition-specific effect on LDAEP and blood-glucose levels. A significant difference emerged between the fasting condition and satiety, with LDAEP being lower during satiety, irrespective of the type of food. Thus, this indicator of serotonergic activity increased after food consumption, which was further related to mood improvement. Moreover, the LDAEP differed between the 2 measurements only for the carbohydrate testing day, suggesting that LDAEP can be selectively modulated by the type of nutrition consumed. Our data further indicate a high intraindividual stability of LDAEP, as the electrophysiological signals were very similar in the fasting condition across the 2 testing days. Together, these findings demonstrate that the LDAEP can serve as a biological marker for central serotonergic activity, while at the same time being sensitive to nutritional changes.
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Affiliation(s)
| | - Vera Flasbeck
- 59970LWL University Hospital, Ruhr University Bochum, Germany
| | - Georg Juckel
- 59970LWL University Hospital, Ruhr University Bochum, Germany
| | - Martin Brüne
- 59970LWL University Hospital, Ruhr University Bochum, Germany
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Portnova GV, Atanov MS. EEG of patients in coma after traumatic brain injury reflects physical parameters of auditory stimulation but not its emotional content. Brain Inj 2018; 33:370-376. [PMID: 30521421 DOI: 10.1080/02699052.2018.1553310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PRIMARY OBJECTIVE We aimed to investigate the origin of EEG response of patients in coma and after moderate TBI to emotional stimulation, whether they distinguish emotional content or only react to the physical features of an audio signal. RESEARCH DESIGN We registered EEG during continuous pleasant and unpleasant non-verbal stimulation and in rest. A total of 69 subjects participated in our study: healthy adults, conscious patients after moderate TBI and patients in coma after severe TBI. We analysed the distances between the stimuli according to EEG data and applied correlation analysis to the distances, acoustic parameters of stimuli, subjects' emotional assessment of the stimuli, GCS score and Doppler ultrasound data. MAIN OUTCOMES AND RESULTS The EEG response to the stimulation in patients in coma mostly reflects the physical parameters of the stimuli, and correlated with Doppler ultrasound data. The EEG of healthy adults reflects their psychological assessment of the stimuli. Patients after moderate TBI differentiate unpleasant stimuli well and pleasant stimuli poorly, they mainly consider pitch to cope with this task like healthy adults do. CONCLUSIONS The reactivity to the acoustic features of emotional stimulation in patients in coma should be investigated further as a marker of patients' recovery. ABBREVIATIONS TBI: traumatic brain injurym; TBI: moderate TBI; MCA: middle cerebral artery; GCS: Glasgow Coma Scale; M: mean; SD: standard deviation.
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Affiliation(s)
- Galina V Portnova
- a Human Higher Nervous Activity Lab Moscow , Institute of Higher Nervous Activity and Neurophysiology of RAS , Moscow , Russia.,b Department of Scientific Activities , Pushkin Institute of Russian Language , Moscow , Russia
| | - Michael S Atanov
- a Human Higher Nervous Activity Lab Moscow , Institute of Higher Nervous Activity and Neurophysiology of RAS , Moscow , Russia
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Wyss C, Tse DHY, Boers F, Shah NJ, Neuner I, Kawohl W. Association between Cortical GABA and Loudness Dependence of Auditory Evoked Potentials (LDAEP) in Humans. Int J Neuropsychopharmacol 2018; 21:809-813. [PMID: 29917080 PMCID: PMC6119294 DOI: 10.1093/ijnp/pyy056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 06/14/2018] [Indexed: 11/13/2022] Open
Abstract
Loudness dependence of auditory evoked potentials (LDAEP) is a widely used EEG-based biomarker for central serotonergic activity. Serotonin has been shown to be associated with different psychiatric disorders such as depression and schizophrenia. Despite its clinical significance, the underlying neurochemical mechanism of this promising marker is not fully understood, and further research is needed to improve its validity. Other neurotransmitters might have a significant impact on this measure. Thus, we assessed the inhibitory action through individual GABA/H20 concentrations and GABA/glutamate ratios by means of magnetic resonance spectroscopy at 3T in healthy subjects. The measurements were assessed in the primary auditory cortex to investigate the association with the LDAEP, whose generators are mainly in the primary auditory cortex. For the first time, this study examines the link between GABAergic neurotransmission and LDAEP, and the data preliminary show that GABA may not contribute to the generation of EEG-based LDAEP.
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Affiliation(s)
- Christine Wyss
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland,Correspondence: Christine Wyss, PhD, Hospital of Psychiatry, University of Zurich, Department of Psychiatry, Psychotherapy and Psychosomatics, Militärstrasse 8, P.O. Box 2019, 8021 Zurich, Switzerland ()
| | - Desmond H Y Tse
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany
| | - Frank Boers
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany
| | - Nadim J Shah
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany,JARA-Brain, Translational Medicine, Jülich, Germany,Department of Neurology, RWTH Aachen University, Aachen, Germany
| | - Irene Neuner
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Aachen, Germany,JARA-Brain, Translational Medicine, Jülich, Germany
| | - Wolfram Kawohl
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland
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Uhl I, Kulik A, Roser P, Theodoridou A, Wyss C, Norra C, Brüne M, Kawohl W, Juckel G. Central serotonergic function in patients with predominantly negative symptoms of schizophrenia. Schizophr Res 2018. [PMID: 28641887 DOI: 10.1016/j.schres.2017.05.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I Uhl
- Department of Psychiatry, Ruhr University, LWL University Hospital Bochum, Germany
| | - A Kulik
- Department of Psychiatry, Ruhr University, LWL University Hospital Bochum, Germany
| | - P Roser
- Department of Psychiatry, Ruhr University, LWL University Hospital Bochum, Germany
| | - A Theodoridou
- Psychiatric University Hospital, Zürich, Switzerland
| | - C Wyss
- Psychiatric University Hospital, Zürich, Switzerland
| | - C Norra
- Department of Psychiatry, Ruhr University, LWL University Hospital Bochum, Germany
| | - M Brüne
- Department of Psychiatry, Ruhr University, LWL University Hospital Bochum, Germany
| | - W Kawohl
- Psychiatric University Hospital, Zürich, Switzerland
| | - G Juckel
- Department of Psychiatry, Ruhr University, LWL University Hospital Bochum, Germany.
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Del Guerra A, Ahmad S, Avram M, Belcari N, Berneking A, Biagi L, Bisogni MG, Brandl F, Cabello J, Camarlinghi N, Cerello P, Choi CH, Coli S, Colpo S, Fleury J, Gagliardi V, Giraudo G, Heekeren K, Kawohl W, Kostou T, Lefaucheur JL, Lerche C, Loudos G, Morrocchi M, Muller J, Mustafa M, Neuner I, Papadimitroulas P, Pennazio F, Rajkumar R, Brambilla CR, Rivoire J, Kops ER, Scheins J, Schimpf R, Shah NJ, Sorg C, Sportelli G, Tosetti M, Trinchero R, Wyss C, Ziegler S. TRIMAGE: A dedicated trimodality (PET/MR/EEG) imaging tool for schizophrenia. Eur Psychiatry 2018; 50:7-20. [PMID: 29358016 DOI: 10.1016/j.eurpsy.2017.11.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/15/2017] [Accepted: 11/16/2017] [Indexed: 02/02/2023] Open
Abstract
Simultaneous PET/MR/EEG (Positron Emission Tomography - Magnetic Resonance - Electroencephalography), a new tool for the investigation of neuronal networks in the human brain, is presented here within the framework of the European Union Project TRIMAGE. The trimodal, cost-effective PET/MR/EEG imaging tool makes use of cutting edge technology both in PET and in MR fields. A novel type of magnet (1.5T, non-cryogenic) has been built together with a PET scanner that makes use of the most advanced photodetectors (i.e., SiPM matrices), scintillators matrices (LYSO) and digital electronics. The combined PET/MR/EEG system is dedicated to brain imaging and has an inner diameter of 260 mm and an axial Field-of-View of 160 mm. It enables the acquisition and assessment of molecular metabolic information with high spatial and temporal resolution in a given brain simultaneously. The dopaminergic system and the glutamatergic system in schizophrenic patients are investigated via PET, the same physiological/pathophysiological conditions with regard to functional connectivity, via fMRI, and its electrophysiological signature via EEG. In addition to basic neuroscience questions addressing neurovascular-metabolic coupling, this new methodology lays the foundation for individual physiological and pathological fingerprints for a wide research field addressing healthy aging, gender effects, plasticity and different psychiatric and neurological diseases. The preliminary performances of two components of the imaging tool (PET and MR) are discussed. Initial results of the search of possible candidates for suitable schizophrenia biomarkers are also presented as obtained with PET/MR systems available to the collaboration.
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Affiliation(s)
- Alberto Del Guerra
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy.
| | | | - Mihai Avram
- Nuklearmedinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Department of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Nicola Belcari
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy
| | - Arne Berneking
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | - Laura Biagi
- IRCSS, Stella Maris, Calambrone, Pisa, Italy
| | - Maria Giuseppina Bisogni
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy
| | - Felix Brandl
- Department of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Jorge Cabello
- Nuklearmedinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Niccolò Camarlinghi
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy
| | | | - Chang-Hoon Choi
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | - Silvia Coli
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Torino, Italy
| | | | | | - Vito Gagliardi
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy
| | - Giuseppe Giraudo
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Torino, Italy
| | - Karsten Heekeren
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Switzerland
| | - Wolfram Kawohl
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Switzerland; Department of Psychiatry and Psychotherapy, Psychiatric Services of Aargovia, Switzerland
| | | | | | - Christoph Lerche
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | - George Loudos
- Technological Educational Institute of Athens, Greece
| | - Matteo Morrocchi
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy
| | | | - Mona Mustafa
- Nuklearmedinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Irene Neuner
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen University, JARA Brain, Aachen, Germany
| | | | | | - Ravichandran Rajkumar
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen University, JARA Brain, Aachen, Germany
| | - Cláudia Régio Brambilla
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | | | - Elena Rota Kops
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | - Jürgen Scheins
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | | | - N Jon Shah
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, INM4, Jülich, Germany
| | - Christian Sorg
- Department of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Department of Psychiatry, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Giancarlo Sportelli
- Dipartimento di Fisica "E. Fermi", Università di Pisa, Italy; INFN, Sezione di Pisa, Pisa, Italy
| | | | | | - Christine Wyss
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Switzerland
| | - Sibylle Ziegler
- Nuklearmedinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Department of Nuclear Medicine, University Hospital, LMU, Munich, Germany
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10
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Kim DW, Lee SH, Shim M, Im CH. Estimation of Symptom Severity Scores for Patients with Schizophrenia Using ERP Source Activations during a Facial Affect Discrimination Task. Front Neurosci 2017; 11:436. [PMID: 28824360 PMCID: PMC5540885 DOI: 10.3389/fnins.2017.00436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/14/2017] [Indexed: 11/13/2022] Open
Abstract
Precise diagnosis of psychiatric diseases and a comprehensive assessment of a patient's symptom severity are important in order to establish a successful treatment strategy for each patient. Although great efforts have been devoted to searching for diagnostic biomarkers of schizophrenia over the past several decades, no study has yet investigated how accurately these biomarkers are able to estimate an individual patient's symptom severity. In this study, we applied electrophysiological biomarkers obtained from electroencephalography (EEG) analyses to an estimation of symptom severity scores of patients with schizophrenia. EEG signals were recorded from 23 patients while they performed a facial affect discrimination task. Based on the source current density analysis results, we extracted voxels that showed a strong correlation between source activity and symptom scores. We then built a prediction model to estimate the symptom severity scores of each patient using the source activations of the selected voxels. The symptom scores of the Positive and Negative Syndrome Scale (PANSS) were estimated using the linear prediction model. The results of leave-one-out cross validation (LOOCV) showed that the mean errors of the estimated symptom scores were 3.34 ± 2.40 and 3.90 ± 3.01 for the Positive and Negative PANSS scores, respectively. The current pilot study is the first attempt to estimate symptom severity scores in schizophrenia using quantitative EEG features. It is expected that the present method can be extended to other cognitive paradigms or other psychological illnesses.
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Affiliation(s)
- Do-Won Kim
- Department of Biomedical Engineering, Chonnam National UniversityYeosu, South Korea
| | - Seung-Hwan Lee
- Psychiatry Department, Ilsan Paik Hospital, Inje UniversityGoyang, South Korea
| | - Miseon Shim
- Psychiatry Department, Ilsan Paik Hospital, Inje UniversityGoyang, South Korea.,Department of Biomedical Engineering, Hanyang UniversitySeoul, South Korea
| | - Chang-Hwan Im
- Department of Biomedical Engineering, Hanyang UniversitySeoul, South Korea
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11
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Wyss C, Tse DHY, Kometer M, Dammers J, Achermann R, Shah NJ, Kawohl W, Neuner I. GABA metabolism and its role in gamma-band oscillatory activity during auditory processing: An MRS and EEG study. Hum Brain Mapp 2017; 38:3975-3987. [PMID: 28480987 DOI: 10.1002/hbm.23642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 12/22/2022] Open
Abstract
Gamma-aminobutyric acid (GABA) and glutamate are believed to have inhibitory and exhibitory neuromodulatory effects that regulate the brain's response to sensory perception. Furthermore, frequency-specific synchronization of neuronal excitability within the gamma band (30-80 Hz) is attributable to a homeostatic balance between excitation and inhibition. However, our understanding of the physiological mechanism underlying gamma rhythms is based on animal models. Investigations of the relationship between GABA concentrations, glutamate concentrations, and gamma band activity in humans were mostly restricted to the visual cortex and are conflicting. Here, we performed a multimodal imaging study combining magnetic resonance spectroscopy (MRS) with electroencephalography (EEG) in the auditory cortex. In 14 healthy subjects, we investigated the impact of individual differences in GABA and glutamate concentration on gamma band response (GBR) following auditory stimulus presentation. We explored the effects of bulk GABA on the GBR across frequency (30-200 Hz) and time (-200 to 600 ms) and found no significant relationship. Furthermore, no correlations were found between gamma peak frequency or power measures and metabolite concentrations (GABA, glutamate, and GABA/glutamate ratio). These findings suggest that, according to MRS measurements, and given the auditory stimuli used in this study, GABA and glutamate concentrations are unlikely to play a significant role in the inhibitory and excitatory drive in the generation of gamma band activity in the auditory cortex. Hum Brain Mapp 38:3975-3987, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Christine Wyss
- Department of Psychiatry, Psychotherapie and Psychosomatics, Hospital of Psychiatry, University of Zurich, Switzerland
| | - Desmond H Y Tse
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany
| | - Michael Kometer
- Department of Psychiatry, Psychotherapie and Psychosomatics, Hospital of Psychiatry, University of Zurich, Switzerland
| | - Jürgen Dammers
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany
| | - Rita Achermann
- Psychological Methods, Evaluation and Statistics, Department of Psychology, University of Zurich, Switzerland
| | - N Jon Shah
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany.,JARA-Brain, Translational Medicine, Jülich, Germany.,Department of Neurology, RWTH Aachen University, Germany
| | - Wolfram Kawohl
- Department of Psychiatry, Psychotherapie and Psychosomatics, Hospital of Psychiatry, University of Zurich, Switzerland
| | - Irene Neuner
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany.,JARA-Brain, Translational Medicine, Jülich, Germany
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Didriksen M, Fejgin K, Nilsson SR, Birknow MR, Grayton HM, Larsen PH, Lauridsen JB, Nielsen V, Celada P, Santana N, Kallunki P, Christensen KV, Werge TM, Stensbøl TB, Egebjerg J, Gastambide F, Artigas F, Bastlund JF, Nielsen J. Persistent gating deficit and increased sensitivity to NMDA receptor antagonism after puberty in a new mouse model of the human 22q11.2 microdeletion syndrome: a study in male mice. J Psychiatry Neurosci 2017; 42:48-58. [PMID: 27391101 PMCID: PMC5373712 DOI: 10.1503/jpn.150381] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/05/2016] [Accepted: 04/05/2016] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The hemizygous 22q11.2 microdeletion is a common copy number variant in humans. The deletion confers high risk for neurodevelopmental disorders, including autism and schizophrenia. Up to 41% of deletion carriers experience psychotic symptoms. METHODS We present a new mouse model (Df(h22q11)/+) of the deletion syndrome (22q11.2DS) and report on, to our knowledge, the most comprehensive study undertaken to date in 22q11.2DS models. The study was conducted in male mice. RESULTS We found elevated postpubertal N-methyl-D-aspartate (NMDA) receptor antagonist-induced hyperlocomotion, age-independent prepulse inhibition (PPI) deficits and increased acoustic startle response (ASR). The PPI deficit and increased ASR were resistant to antipsychotic treatment. The PPI deficit was not a consequence of impaired hearing measured by auditory brain stem responses. The Df(h22q11)/+ mice also displayed increased amplitude of loudness-dependent auditory evoked potentials. Prefrontal cortex and dorsal striatal elevations of the dopamine metabolite DOPAC and increased dorsal striatal expression of the AMPA receptor subunit GluR1 was found. The Df(h22q11)/+ mice did not deviate from wild-type mice in a wide range of other behavioural and biochemical assays. LIMITATIONS The 22q11.2 microdeletion has incomplete penetrance in humans, and the severity of disease depends on the complete genetic makeup in concert with environmental factors. In order to obtain more marked phenotypes reflecting the severe conditions related to 22q11.2DS it is suggested to expose the Df(h22q11)/+ mice to environmental stressors that may unmask latent psychopathology. CONCLUSION The Df(h22q11)/+ model will be a valuable tool for increasing our understanding of the etiology of schizophrenia and other psychiatric disorders associated with the 22q11DS.
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Affiliation(s)
- Michael Didriksen
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Kim Fejgin
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Simon R.O. Nilsson
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Michelle R. Birknow
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Hannah M. Grayton
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Peter H. Larsen
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Jes B. Lauridsen
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Vibeke Nielsen
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Pau Celada
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Noemi Santana
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Pekka Kallunki
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Kenneth V. Christensen
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Thomas M. Werge
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Tine B. Stensbøl
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Jan Egebjerg
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Francois Gastambide
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Francesc Artigas
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Jesper F. Bastlund
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
| | - Jacob Nielsen
- From H. Lundbeck A/S, Research DK, Valby, Denmark (Didriksen Fejgin, Birknow, Larsen, Lauridsen, Nielsen, Kallunki, Christensen, Stensbøl, Egebjerg, Nielsen); the Department of Psychology, University of Cambridge, Cambridge, UK (Nilsson); the Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK (Nilsson); the Lilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Windlesham, UK (Grayton, Gastambide); the Institut d’Investigacions Biomèdiques de Barcelona, Barcelona, Spain (Celada, Artigas); the Centro de Investigación Biomédica en Red de Salud Mental, Spain (Santana, Artigas); the Institute of Biological Psychiatry, MHC Sct. Hans, Copenhagen Mental Health Services; and the Institute of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Copenhagen; iP-SYCH - The Lundbeck Foundation’s Initiative for Integrative Psychiatric Research, Roskilde, Denmark (Werge)
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Niederkofler V, Asher TE, Okaty BW, Rood BD, Narayan A, Hwa LS, Beck SG, Miczek KA, Dymecki SM. Identification of Serotonergic Neuronal Modules that Affect Aggressive Behavior. Cell Rep 2016; 17:1934-1949. [PMID: 27851959 PMCID: PMC5156533 DOI: 10.1016/j.celrep.2016.10.063] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 09/16/2016] [Accepted: 10/17/2016] [Indexed: 11/19/2022] Open
Abstract
Escalated aggression can have devastating societal consequences, yet underlying neurobiological mechanisms are poorly understood. Here, we show significantly increased inter-male mouse aggression when neurotransmission is constitutively blocked from either of two subsets of serotonergic, Pet1+ neurons: one identified by dopamine receptor D1(Drd1a)::cre-driven activity perinatally, and the other by Drd2::cre from pre-adolescence onward. Blocking neurotransmission from other Pet1+ neuron subsets of similar size and/or overlapping anatomical domains had no effect on aggression compared with controls, suggesting subtype-specific serotonergic neuron influences on aggression. Using established and novel intersectional genetic tools, we further characterized these subtypes across multiple parameters, showing both overlapping and distinct features in axonal projection targets, gene expression, electrophysiological properties, and effects on non-aggressive behaviors. Notably, Drd2::cre marked 5-HT neurons exhibited D2-dependent inhibitory responses to dopamine in slices, suggesting direct and specific interplay between inhibitory dopaminergic signaling and a serotonergic subpopulation. Thus, we identify specific serotonergic modules that shape aggression.
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Affiliation(s)
- Vera Niederkofler
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Tedi E Asher
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Benjamin W Okaty
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Benjamin D Rood
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Ankita Narayan
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Lara S Hwa
- Department of Psychology, Tufts University, 530 Boston Avenue, Medford, MA 02155, USA
| | - Sheryl G Beck
- Departments of Anesthesiology and Critical Care and Pharmacology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104; Department of Anesthesiology and Critical Care, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Klaus A Miczek
- Department of Psychology, Tufts University, 530 Boston Avenue, Medford, MA 02155, USA
| | - Susan M Dymecki
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA.
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Mavrogiorgou P, Enzi B, Klimm AK, Köhler E, Roser P, Norra C, Juckel G. Serotonergic modulation of orbitofrontal activity and its relevance for decision making and impulsivity. Hum Brain Mapp 2016; 38:1507-1517. [PMID: 27862593 DOI: 10.1002/hbm.23468] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 10/25/2016] [Accepted: 11/06/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The orbitofrontal cortex seems to play a crucial role in reward-guided learning and decision making, especially for impulsive choice procedures including delayed reward discounting. The central serotonergic system is closely involved in the regulation of impulsivity, but how the serotonergic firing rate and release, best investigated by the loudness dependence of auditory evoked potentials (LDAEP), interact with orbitofrontal activity is still unknown. METHODS Twenty healthy volunteers (11 males, 9 females, 31.3 ± 10.6 years old) were studied in a 3T MRI scanner (Philips, Hamburg, Germany) during a delay discounting task, after their LDAEP was recorded using a 32 electrodes EEG machine (Brain Products, Munich, Germany). RESULTS Significant positive correlations were only found between the LDAEP and the medial orbitofrontal part of the superior frontal gyrus (SFG/MO) [Δ immediate reward - delayed reward] for the right (r = 0.519; P = 0.019) and left side (r = 0.478; P = 0.033). This relationship was stronger for females compared with males. Orbitofrontal activity was also related to the Barratt Impulsivity Scale. CONCLUSIONS This study revealed that low serotonergic activity as measured by a strong LDAEP was related to a high fMRI signal intensity of SFG/MO during immediate reward behavior which is related to impulsivity. Since this relationship was only found for the infralimbic medial and not for the middle or lateral part of the orbitofrontal cortex, an exclusive projection tract of the serotonergic system to this cortical region can be assumed to regulate impulsive reward-orientated decision making. Hum Brain Mapp 38:1507-1517, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Paraskevi Mavrogiorgou
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
| | - Björn Enzi
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
| | - Ann-Kristin Klimm
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
| | - Elke Köhler
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
| | - Patrik Roser
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
| | - Christine Norra
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
| | - Georg Juckel
- Department of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr. 1, Bochum, 44791, Germany
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15
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Jawinski P, Mauche N, Ulke C, Huang J, Spada J, Enzenbach C, Sander C, Hegerl U, Hensch T. Tobacco use is associated with reduced amplitude and intensity dependence of the cortical auditory evoked N1-P2 component. Psychopharmacology (Berl) 2016; 233:2173-2183. [PMID: 26983415 DOI: 10.1007/s00213-016-4268-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/02/2016] [Indexed: 10/22/2022]
Abstract
RATIONALE Tobacco use is linked to cerebral atrophy and reduced cognitive performance in later life. However, smoking-related long-term effects on brain function remain largely uncertain. Previous studies suggest that nicotine affects serotonergic signaling, and the intensity dependence (alias loudness dependence) of the auditory evoked N1-P2 potential has been proposed as a marker of serotonergic neurotransmission. OBJECTIVE In the present study, we assesed the effects of chronic smoking on amplitude and intensity dependence of the auditory evoked N1-P2 potential. METHODS Subjects underwent a 15-min intensity dependence of auditory evoked potentials (IAEP) paradigm. From N = 1739 eligible subjects (40-79 years), we systematically matched current smokers, ex-smokers, and never-smokers by sex, age, alcohol and caffeine consumption, and socioeconomic status. Between-group differences and potential dose-dependencies were evaluated. RESULTS Analyses revealed higher N1-P2 amplitudes and intensity dependencies in never-smokers relative to ex- and current smokers, with ex-smokers exhibiting intermediate intensity dependencies. Moreover, we observed pack years and number of cigarettes consumed per day to be inversely correlated with amplitudes in current smokers. CONCLUSIONS According to the IAEP serotonin hypothesis, our results suggest serotonin activity to be highest in current smokers, intermediate in ex-smokers, and lowest in never-smokers. To our knowledge, the present study is the first providing evidence for a dose-dependent reduction in N1-P2 amplitudes. Further, we extend prior research by showing reduced amplitudes and intensity dependencies in ex-smokers even 25 years, on average, after cessation. While we can rule out several smoking-related confounders to bias observed associations, causal inferences remain to be established by future longitudinal studies.
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Affiliation(s)
- Philippe Jawinski
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany. .,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany. .,Depression Research Center of the German Depression Foundation, Leipzig, Germany.
| | - Nicole Mauche
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
| | - Christine Ulke
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Jue Huang
- Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
| | - Janek Spada
- Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Cornelia Enzenbach
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
| | - Christian Sander
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Ulrich Hegerl
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Tilman Hensch
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
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Tlumak AI, Durrant JD, Delgado RE. The Effect of Stimulus Intensity and Carrier Frequency on Auditory Middle- and Long-Latency Evoked Potentials Using a Steady-State-Response Approach. Am J Audiol 2016; 25:62-74. [PMID: 26999323 DOI: 10.1044/2016_aja-15-0061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 12/28/2015] [Indexed: 11/09/2022] Open
Abstract
PURPOSE The purpose of this study was to measure magnitude changes of auditory steady-state responses (ASSRs) and respective transient middle- and long-latency responses as a function of stimulus intensity and carrier frequency. The literature lacks clear consensus, including relationship to loudness. METHOD A cohort of 48 adults with normal hearing was examined from a companion study (Tlumak, Durrant, & Delgado, 2015) on effects of aging. ASSRs were elicited by repeated tone-burst stimuli presented at rates of 40 and 0.75 Hz at 3 frequencies and 5 levels of stimulus intensity. The design also permitted scrutiny of any gender bias to the results. RESULTS Similar to derived transient response findings, ASSR magnitude (harmonic sum) systematically increased with intensity. Input-output function only at 0.75 Hz approximated a log-log linear function. However, slopes fell well below that of doubling of loudness per 10 dB SPL. Results failed to demonstrate significance as a function of carrier frequency and gender for both repetition rates. CONCLUSION Effects of stimulus intensity, carrier frequency, and gender on ASSRs were similar to those of their transient counterparts. Findings remain disappointing for objective loudness estimation. Results suggest only a clear linkage to the long-latency response and the 0.75-Hz magnitude but require careful consideration of limitations/underlying mechanisms when measuring loudness-related effects.
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17
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Jang KI, Lee SH, Huh HJ, Chae JH. Influence of the 5-HT3A Receptor Gene Polymorphism and Childhood Sexual Trauma on Central Serotonin Activity. PLoS One 2015; 10:e0145269. [PMID: 26701104 PMCID: PMC4689356 DOI: 10.1371/journal.pone.0145269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 12/02/2015] [Indexed: 01/21/2023] Open
Abstract
Background Gene-environment interactions are important for understanding alterations in human brain function. The loudness dependence of auditory evoked potential (LDAEP) is known to reflect central serotonergic activity. Single nucleotide polymorphisms (SNPs) in the 5-HT3A serotonin receptor gene are associated with psychiatric disorders. This study aimed to investigate the effect between 5-HT3A receptor gene polymorphisms and childhood sexual trauma on the LDAEP as an electrophysiological marker in healthy subjects. Methods A total of 206 healthy subjects were recruited and evaluated using the childhood trauma questionnaire (CTQ) and hospital anxiety and depression scale (HADS). Peak-to-peak N1/P2 was measured at five stimulus intensities, and the LDAEP was calculated as the linear-regression slope. In addition, the rs1062613 SNPs of 5-HT3A (CC, CT, and TT) were analyzed in healthy subjects. Results There was a significant interaction between scores on the CTQ-sexual abuse subscale and 5-HT3A genotype on the LDAEP. Subjects with the CC polymorphism had a significantly higher LDEAP than T carriers in the sexually abused group. In addition, CC genotype subjects in the sexually abused group showed a significantly higher LDAEP compared with CC genotype subjects in the non-sexually abused group. Conclusions Our findings suggest that people with the CC polymorphism of the 5-HT3A gene have a greater risk of developing mental health problems if they have experienced childhood sexual abuse, possibly due to low central serotonin activity. Conversely, the T polymorphism may be protective against any central serotonergic changes following childhood sexual trauma.
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Affiliation(s)
- Kuk-In Jang
- Department of Biomedicine & Health Sciences, The Catholic University of Korea, College of Medicine, Seoul, Korea
- Clinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Korea
| | - Seung-Hwan Lee
- Department of Psychiatry, Inje University College of Medicine, Ilsan Paik Hospital, Goyang, Korea
- Clinical Emotion and Cognition Research Laboratory, Inje University, Goyang, Korea
| | - Hyu Jung Huh
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul, Korea
| | - Jeong-Ho Chae
- Department of Biomedicine & Health Sciences, The Catholic University of Korea, College of Medicine, Seoul, Korea
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul, Korea
- * E-mail:
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Hagenmuller F, Heekeren K, Meier M, Theodoridou A, Walitza S, Haker H, Rössler W, Kawohl W. The Loudness Dependence of Auditory Evoked Potentials (LDAEP) in individuals at risk for developing bipolar disorders and schizophrenia. Clin Neurophysiol 2015; 127:1342-1350. [PMID: 26639170 DOI: 10.1016/j.clinph.2015.10.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 10/14/2015] [Accepted: 10/28/2015] [Indexed: 01/23/2023]
Abstract
OBJECTIVES The Loudness Dependence of Auditory Evoked Potentials (LDAEP) is considered as an indicator of central serotonergic activity. Alteration of serotonergic neurotransmission was reported in bipolar disorders and schizophrenia. In line with previous reports on clinically manifest disorders, we expected a weaker LDAEP in subjects at risk for bipolar disorders and schizophrenia compared to healthy controls. METHODS We analyzed LDAEP of individuals at risk for developing bipolar disorders (n=27), with high-risk status (n=74) and ultra-high-risk status for schizophrenia (n=86) and healthy controls (n=47). RESULTS The LDAEP did not differ between subjects at risk for schizophrenia or bipolar disorders and controls. Among subjects without medication (n=122), the at-risk-bipolar group showed a trend towards a weaker LDAEP than both the high-risk and the ultra-high-risk groups for schizophrenia. CONCLUSIONS The LDAEP did not appear as a vulnerability marker for schizophrenia or bipolar disorders. This suggests that an altered LDAEP may not be measurable until the onset of clinically manifest disorder. However, the hypothesis that pathogenic mechanisms leading to bipolar disorders may differ from those leading to schizophrenia is supported. SIGNIFICANCE This is the first study investigating LDAEP in a population at risk for bipolar disorders.
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Affiliation(s)
- Florence Hagenmuller
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Karsten Heekeren
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Magali Meier
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Anastasia Theodoridou
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Susanne Walitza
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Child and Adolescent Psychiatry, University of Zurich, Zurich, Switzerland
| | - Helene Haker
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Translational Neuromodeling Unit, Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zurich, Switzerland
| | - Wulf Rössler
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Institute of Psychiatry, Laboratory of Neuroscience (LIM 27), University of Sao Paulo, Brazil
| | - Wolfram Kawohl
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland.
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Park YM, Jung E, Kim HS, Hahn SW, Lee SH. Differences in central serotoninergic transmission among patients with recent onset, sub-chronic, and chronic schizophrenia as assessed by the loudness dependence of auditory evoked potentials. Schizophr Res 2015; 168:180-4. [PMID: 26232871 DOI: 10.1016/j.schres.2015.07.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 07/15/2015] [Accepted: 07/19/2015] [Indexed: 10/23/2022]
Abstract
Previous research has shown that abnormalities in serotonin systems are associated with schizophrenia. The loudness dependence of auditory evoked potentials (LDAEP) has been used as a metric of central serotonin activity. The present study aimed to evaluate LDAEP in patients with schizophrenia of differing chronicity. Sixty-four patients with schizophrenia and 50 healthy controls were enrolled in this study. LDAEP and psychometric ratings, such as the positive and negative syndrome scale (PANSS), were measured. The cohort was stratified into three subgroups according to the duration of illness: recent onset (<2years, n=21), sub-chronic (2-9years, n=28), and chronic (≥10years, n=15) groups. The LDAEP differed significantly among the three groups. A post-hoc analysis (Bonferroni) demonstrated that the LDAEP differed significantly between the recent onset and chronic groups (p=0.029), and between the healthy control and chronic groups (p=0.008). Age, sex, dosage of antipsychotics, and smoking did not significantly affect the group differences. In the correlation analysis, there was a significant correlation of LDAEP values with illness duration (r=-0.259, p=0.045). The present study verifies that the LDAEP is related to the duration of illness in patients with schizophrenia. This suggests that central serotonin neurotransmission is changeable, and it may depend on the chronicity of schizophrenia pathology.
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Affiliation(s)
- Young-Min Park
- Department of Psychiatry, Inje University College of Medicine, Goyang, Republic of Korea
| | - Eunjoo Jung
- Department of Psychology, Sogang University, Seoul, Republic of Korea; Clinical Emotion and Cognition Research Laboratory, Goyang, Republic of Korea
| | - Hyang Sook Kim
- Department of Psychology, Sogang University, Seoul, Republic of Korea
| | - Sang Woo Hahn
- Department of Psychiatry, Soonchunhyang University, College of Medicine, Seoul, Republic of Korea
| | - Seung-Hwan Lee
- Department of Psychiatry, Inje University College of Medicine, Goyang, Republic of Korea; Department of Psychology, Sogang University, Seoul, Republic of Korea.
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20
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Gogos A, Sbisa AM, Sun J, Gibbons A, Udawela M, Dean B. A Role for Estrogen in Schizophrenia: Clinical and Preclinical Findings. Int J Endocrinol 2015; 2015:615356. [PMID: 26491441 PMCID: PMC4600562 DOI: 10.1155/2015/615356] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/21/2015] [Accepted: 08/23/2015] [Indexed: 12/30/2022] Open
Abstract
Gender differences in schizophrenia have been extensively researched and it is being increasingly accepted that gonadal steroids are strongly attributed to this phenomenon. Of the various hormones implicated, the estrogen hypothesis has been the most widely researched one and it postulates that estrogen exerts a protective effect by buffering females against the development and severity of the illness. In this review, we comprehensively analyse studies that have investigated the effects of estrogen, in particular 17β-estradiol, in clinical, animal, and molecular research with relevance to schizophrenia. Specifically, we discuss the current evidence on estrogen dysfunction in schizophrenia patients and review the clinical findings on the use of estradiol as an adjunctive treatment in schizophrenia patients. Preclinical research that has used animal models and molecular probes to investigate estradiol's underlying protective mechanisms is also substantially discussed, with particular focus on estradiol's impact on the major neurotransmitter systems implicated in schizophrenia, namely, the dopamine, serotonin, and glutamate systems.
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Affiliation(s)
- Andrea Gogos
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Alyssa M. Sbisa
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
- School of Psychology and Public Health, La Trobe University, Bundoora, VIC 3086, Australia
| | - Jeehae Sun
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
- School of Psychology and Public Health, La Trobe University, Bundoora, VIC 3086, Australia
| | - Andrew Gibbons
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Madhara Udawela
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Brian Dean
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
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Wyss C, Boers F, Kawohl W, Arrubla J, Vahedipour K, Dammers J, Neuner I, Shah N. Spatiotemporal properties of auditory intensity processing in multisensor MEG. Neuroimage 2014; 102 Pt 2:465-73. [DOI: 10.1016/j.neuroimage.2014.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/26/2014] [Accepted: 08/05/2014] [Indexed: 12/27/2022] Open
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Cortical response variation with different sound pressure levels: a combined event-related potentials and FMRI study. PLoS One 2014; 9:e109216. [PMID: 25279457 PMCID: PMC4184873 DOI: 10.1371/journal.pone.0109216] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/29/2014] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Simultaneous recording of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) provides high spatial and temporal resolution. In this study we combined EEG and fMRI to investigate the structures involved in the processing of different sound pressure levels (SPLs). METHODS EEG data were recorded simultaneously with fMRI from 16 healthy volunteers using MR compatible devices at 3 T. Tones with different SPLs were delivered to the volunteers and the N1/P2 amplitudes were included as covariates in the fMRI data analysis in order to compare the structures activated with high and low SPLs. Analysis of variance (ANOVA) and ROI analysis were also performed. Additionally, source localisation analysis was performed on the EEG data. RESULTS The integration of averaged ERP parameters into the fMRI analysis showed an extended map of areas exhibiting covariation with the BOLD signal related to the auditory stimuli. The ANOVA and ROI analyses also revealed additional brain areas other than the primary auditory cortex (PAC) which were active with the auditory stimulation at different SPLs. The source localisation analyses showed additional sources apart from the PAC which were active with the high SPLs. DISCUSSION The PAC and the insula play an important role in the processing of different SPLs. In the fMRI analysis, additional activation was found in the anterior cingulate cortex, opercular and orbito-frontal cortices with high SPLs. A strong response of the visual cortex was also found with the high SPLs, suggesting the presence of cross-modal effects.
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Theodoridou A, Heekeren K, Dvorsky D, Metzler S, Franscini M, Haker H, Kawohl W, Rüsch N, Walitza S, Rössler W. Early Recognition of High Risk of Bipolar Disorder and Psychosis: An Overview of the ZInEP "Early Recognition" Study. Front Public Health 2014; 2:166. [PMID: 25325050 PMCID: PMC4181243 DOI: 10.3389/fpubh.2014.00166] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 09/14/2014] [Indexed: 11/29/2022] Open
Abstract
Early detection of persons with first signs of emerging psychosis is regarded as a promising strategy to reduce the burden of the disease. In recent years, there has been increasing interest in early detection of psychosis and bipolar disorders, with a clear need for sufficient sample sizes in prospective research. The underlying brain network disturbances in individuals at risk or with a prodrome are complex and yet not well known. This paper provides the rationale and design of a prospective longitudinal study focused on at-risk states of psychosis and bipolar disorder. The study is carried out within the context of the Zurich Program for Sustainable Development of Mental Health services (Zürcher Impulsprogramm zur Nachhaltigen Entwicklung der Psychiatrie). Persons at risk for psychosis or bipolar disorder between 13 and 35 years of age are examined by using a multi-level-approach (psychopathology, neuropsychology, genetics, electrophysiology, sociophysiology, magnetic resonance imaging, near-infrared spectroscopy). The included adolescents and young adults have four follow-ups at 6, 12, 24, and 36 months. This approach provides data for a better understanding of the relevant mechanisms involved in the onset of psychosis and bipolar disorder, which can serve as targets for future interventions. But for daily clinical practice a practicable “early recognition” approach is required. The results of this study will be useful to identify the strongest predictors and to delineate a prediction model.
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Affiliation(s)
- Anastasia Theodoridou
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland
| | - Karsten Heekeren
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland
| | - Diane Dvorsky
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland
| | - Sibylle Metzler
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland
| | - Maurizia Franscini
- University Hospital of Child and Adolescent Psychiatry, University of Zurich , Zurich , Switzerland
| | - Helene Haker
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland ; Translational Neuromodeling Unit, University of Zurich and ETH Zurich , Zurich , Switzerland
| | - Wolfram Kawohl
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland
| | - Nicolas Rüsch
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland
| | - Susanne Walitza
- University Hospital of Child and Adolescent Psychiatry, University of Zurich , Zurich , Switzerland
| | - Wulf Rössler
- Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich , Zurich , Switzerland ; The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich , Zurich , Switzerland ; Collegium Helveticum , Zurich , Switzerland
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Fournier P, Schönwiesner M, Hébert S. Loudness modulation after transient and permanent hearing loss: implications for tinnitus and hyperacusis. Neuroscience 2014; 283:64-77. [PMID: 25135356 DOI: 10.1016/j.neuroscience.2014.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 11/19/2022]
Abstract
Loudness is the primary perceptual correlate of sound intensity. The relationship between sound intensity and loudness is not fixed, and can be modified by short-term sound deprivation or stimulation. Deprivation increases sound sensitivity, whereas stimulation decreases it. We review the effects of short-term auditory deprivation and stimulation on the auditory central nervous system of humans and animals, and we extend the discussion to permanent auditory deprivation (hearing loss) and auditory pathologies of loudness perception. Although there is sufficient evidence to conclude that loudness can be modulated in normal hearing listeners by temporary sound deprivation and stimulation, evidence is scanter for the hearing-impaired listeners. In addition, cortical effects of sound deprivation and stimulation in humans, which may correlate with loudness coding, are still largely unknown and should be the target of future research.
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Affiliation(s)
- P Fournier
- School of Speech Pathology and Audiology, Université de Montréal, Montréal, Québec, Canada; International Laboratory for Research on Brain, Music, and Sound (BRAMS), Université de Montréal, Montréal, Québec, Canada; Centre de recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Montréal, Québec, Canada
| | - M Schönwiesner
- International Laboratory for Research on Brain, Music, and Sound (BRAMS), Université de Montréal, Montréal, Québec, Canada; Department of Psychology, Université de Montréal, Montréal, Québec, Canada
| | - S Hébert
- School of Speech Pathology and Audiology, Université de Montréal, Montréal, Québec, Canada; International Laboratory for Research on Brain, Music, and Sound (BRAMS), Université de Montréal, Montréal, Québec, Canada; Centre de recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Montréal, Québec, Canada.
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Juckel G. Serotonin: from sensory processing to schizophrenia using an electrophysiological method. Behav Brain Res 2014; 277:121-4. [PMID: 24971690 DOI: 10.1016/j.bbr.2014.05.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/18/2014] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
Abstract
Serotonin plays a major role in sensory processing especially with in the primary auditory cortex. The so-called loudness dependence of auditory evoked potentials is generated by pyramidal cells of the primary auditory cortex (LDAEP) which are modulated by serotonergic projection fibers to the main regulators of pyramidal cells, i.e. GABAergic interneurons. Therefore, there are a lot of preclinical as well as clinical proofs and hints that the LDAEP may serve as a valid indicator of synaptically released serotonin, although there are also data not supporting this relationship. This is further examplified by LDAEP data in patients with different states of schizophrenia, from prodromal to the chronic state. Hereby, a strong relationship was found between LDAEP, i.e. different serotonin levels, and the negative symptoms of these groups of patients with schizophrenia. This underlines the importance of LDAEP as indicator of central serotonergic neurotransmission and its high relevance for clinical psychiatry and psychopharmacology.
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Affiliation(s)
- Georg Juckel
- Dept. of Psychiatry, Ruhr University Bochum, LWL University Hospital, Alexandrinenstr.1, 44791 Bochum, NRW, Germany.
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26
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Boutros NN, Mucci A, Vignapiano A, Galderisi S. Electrophysiological aberrations associated with negative symptoms in schizophrenia. Curr Top Behav Neurosci 2014; 21:129-156. [PMID: 24671702 DOI: 10.1007/7854_2014_303] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Clinical heterogeneity is a confound common to all of schizophrenia research. Deficit schizophrenia has been proposed as a homogeneous disease entity within the schizophrenia syndrome. The use of the Schedule for the Deficit Syndrome (SDS) has allowed the definition of a subgroup dominated by persistent and primary negative symptoms. While a number of studies have appeared over the years examining the electrophysiological correlates of the cluster of negative symptoms in schizophrenia, only a few studies have actually focused on the Deficit Syndrome (DS). In this chapter, electrophysiological investigations utilizing EEG, Evoked Potentials (EPs), polysomnography (PSG), or magnetoencephalography (MEG) to probe "negative symptoms," or "Deficit Syndrome" are reviewed. While this line of research is evidently in its infancy, two significant trends emerge. First, spectral EEG studies link increased slow wave activity during wakefulness to the prevalence of negative symptoms. Second, sleep studies point to an association between decrease in slow wave sleep and prevalence of negative symptoms. Several studies also indicate a relationship of negative symptoms with reduced alpha activity. A host of other abnormalities including sensory gating and P300 attenuation are less consistently reported. Three studies specifically addressed electrophysiology of the DS. Two of the three studies provided evidence suggesting that the DS may be a separate disease entity and not simply a severe form of schizophrenia.
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Affiliation(s)
- Nash N Boutros
- Department of Psychiatry and Neurosciences, University of Missouri Kansas City (UMKC), 1000 East 24th Street, Kansas City, MO, 64108, USA,
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