Iris E Sommer

Iris E C Sommer

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Iris E Sommer

Iris E C Sommer

Publications by authors named "Iris E C Sommer"

75Publications

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1PubMed Central Citations

Volume Increase of the Dentate Gyrus Induced by Electroconvulsive Therapy: Shedding Light on the Clinical Relevance of Plasticity in the Hippocampus.

Authors:
Akihiro Takamiya Jasper O Nuninga René C W Mandl Iris E C Sommer Masaru Mimura Taishiro Kishimoto

J ECT 2019 Dec;35(4):e57-e58

Department of Neuropsychiatry School of Medicine Keio University Tokyo, Japan Center for Psychiatry and Behavioral Science Tokyo, Japan Department of Biomedical Sciences of Cells and Systems University Medical Center Groningen University of Groningen Groningen, The Netherlands Department of Psychiatry UMC Utrecht Brain Center University Medical Center Utrecht Utrecht, The Netherlands Department of Psychiatry UMC Utrecht Brain Center University Medical Center Utrecht Utrecht, The Netherlands Department of Biomedical Sciences of Cells and Systems University Medical Center Groningen University of Groningen Groningen, The Netherlands Department of Neuropsychiatry School of Medicine Keio University Tokyo, Japan

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http://dx.doi.org/10.1097/YCT.0000000000000630DOI Listing
December 2019

Sensory processing deficiencies in patients with borderline personality disorder who experience auditory verbal hallucinations.

Authors:
Maria B A Niemantsverdriet Christina W Slotema Frederik M van der Veen Mark van der Gaag Iris E C Sommer Mathijs Deen Ingmar H A Franken

Psychiatry Res 2019 Nov 30;281:112545. Epub 2019 Aug 30.

Institute of Psychology, Erasmus University Rotterdam, Mandeville Building, Rotterdam, DR, 1738, 3000, the Netherlands.

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http://dx.doi.org/10.1016/j.psychres.2019.112545DOI Listing
November 2019

Neuroinflammation in schizophrenia: meta-analysis of microglial imaging studies.

Authors:
Tiago Reis Marques Abhishekh H Ashok Toby Pillinger Mattia Veronese Federico E Turkheimer Paola Dazzan Iris E C Sommer Oliver D Howes

Psychol Med 2019 Oct 25;49(13):2186-2196. Epub 2018 Oct 25.

Psychiatric Imaging Group, MRC Clinical Sciences Centre, Du Cane Road, London W12 0NN, UK.

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http://dx.doi.org/10.1017/S0033291718003057DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6366560PMC
October 2019

Volume Increase of the Dentate Gyrus Induced by Electroconvulsive Therapy: Shedding Light on the Clinical Relevance of Plasticity in the Hippocampus.

Authors:
Akihiro Takamiya Jasper O Nuninga René C W Mandl Iris E C Sommer Masaru Mimura Taishiro Kishimoto

J ECT 2019 Oct 30. Epub 2019 Oct 30.

Department of Neuropsychiatry School of Medicine Keio University Tokyo, Japan Center for Psychiatry and Behavioral Science Tokyo, Japan. Department of Biomedical Sciences of Cells and Systems University Medical Center Groningen University of Groningen Groningen, The Netherlands Department of Psychiatry UMC Utrecht Brain Center University Medical Center Utrecht Utrecht, The Netherlands. Department of Psychiatry UMC Utrecht Brain Center University Medical Center Utrecht Utrecht, The Netherlands Department of Biomedical Sciences of Cells and Systems University Medical Center Groningen University of Groningen Groningen, The Netherlands Department of Neuropsychiatry School of Medicine Keio University Tokyo, Japan

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http://dx.doi.org/10.1097/YCT.0000000000000630DOI Listing
October 2019

The characteristics of psychotic features in bipolar disorder.

Authors:
Annet H van Bergen Sanne Verkooijen Annabel Vreeker Lucija Abramovic Manon H Hillegers Annet T Spijker Erik Hoencamp Eline J Regeer Stefan E Knapen Rixt F Riemersma-van der Lek Robert Schoevers Anja W Stevens Peter F J Schulte Ronald Vonk Rocco Hoekstra Nico J van Beveren Ralph W Kupka Iris E C Sommer Roel A Ophoff René S Kahn Marco P M Boks

Psychol Med 2019 Sep 10;49(12):2036-2048. Epub 2018 Oct 10.

Department of Psychiatry, University Medical Center Utrecht, Brain Center Rudolf Magnus, Utrecht, The Netherlands.

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http://dx.doi.org/10.1017/S0033291718002854DOI Listing
September 2019

Physical exercise improves quality of life, depressive symptoms, and cognition across chronic brain disorders: a transdiagnostic systematic review and meta-analysis of randomized controlled trials.

Authors:
Meenakshi Dauwan Marieke J H Begemann Margot I E Slot Edwin H M Lee Philip Scheltens Iris E C Sommer

J Neurol 2019 Aug 14. Epub 2019 Aug 14.

Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Postbus 85500, 3508 GA, Utrecht, The Netherlands.

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http://dx.doi.org/10.1007/s00415-019-09493-9DOI Listing
August 2019

Atopy Increases Risk of Psychotic Experiences: A Large Population-Based Study.

Authors:
Marieke J H Begemann Mascha M J Linszen Janna N de Boer Wytske D Hovenga Shiral S Gangadin Maya J L Schutte Iris E C Sommer

Front Psychiatry 2019 9;10:453. Epub 2019 Jul 9.

Cognitive Neurosciences, Department of Biomedical Sciences of Cells & Systems, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.

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https://www.frontiersin.org/article/10.3389/fpsyt.2019.00453
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http://dx.doi.org/10.3389/fpsyt.2019.00453DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637312PMC
July 2019

Paracingulate Sulcus Morphology and Hallucinations in Clinical and Nonclinical Groups.

Authors:
Jane R Garrison Charles Fernyhough Simon McCarthy-Jones Jon S Simons Iris E C Sommer

Schizophr Bull 2019 Jun;45(4):733-741

Department of Neuroscience, Rijks Universiteit Groningen (RUG), University Medical Center Groningen, Groningen, Netherlands.

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http://dx.doi.org/10.1093/schbul/sby157DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6581129PMC
June 2019

Maintenance treatment for patients with a first psychotic episode.

Authors:
Iris E C Sommer Priscilla P Oomen Alkomiet Hasan

Curr Opin Psychiatry 2019 May;32(3):147-156

Department of Psychiatry and Psychotherapy, Klinikum der Universität München, Ludwig-Maximilians University München, Germany.

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http://Insights.ovid.com/crossref?an=00001504-900000000-9922
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http://dx.doi.org/10.1097/YCO.0000000000000494DOI Listing
May 2019

MRI investigation of immune dysregulation in schizophrenia.

Authors:
Shiral S Gangadin Lyliana G Nasib Iris E C Sommer René C W Mandl

Curr Opin Psychiatry 2019 May;32(3):164-169

UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands.

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http://dx.doi.org/10.1097/YCO.0000000000000498DOI Listing
May 2019

Dysregulation of the gut-brain axis in schizophrenia and bipolar disorder: probiotic supplementation as a supportive treatment in psychiatric disorders.

Authors:
Mohamed Genedi Isabel E Janmaat Bartholomeus Benno C M Haarman Iris E C Sommer

Curr Opin Psychiatry 2019 May;32(3):185-195

Department of Biomedical Sciences, Cells & Systems.

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http://dx.doi.org/10.1097/YCO.0000000000000499DOI Listing
May 2019

Volume increase in the dentate gyrus after electroconvulsive therapy in depressed patients as measured with 7T.

Authors:
Jasper O Nuninga René C W Mandl Marco P Boks Steven Bakker Metten Somers Sophie M Heringa Wendy Nieuwdorp Hans Hoogduin René S Kahn Peter Luijten Iris E C Sommer

Mol Psychiatry 2019 Mar 12. Epub 2019 Mar 12.

University Groningen, University Medical Center Groningen, Department of Biomedical Sciences of Cells and Systems, Groningen, The Netherlands.

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http://dx.doi.org/10.1038/s41380-019-0392-6DOI Listing
March 2019

Clinical significance of auditory hallucinations in youth: Comparison between a general population and a help-seeking sample.

Authors:
Kim Maijer Laura A Steenhuis Rosa Lotgering Saskia J M C Palmen Iris E C Sommer Agna A Bartels-Velthuis

Schizophr Res 2019 02 25;204:460-461. Epub 2018 Jul 25.

University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Rob Giel Research center, Hanzeplein 1, 9713 GZ Groningen, the Netherlands.

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http://dx.doi.org/10.1016/j.schres.2018.07.027DOI Listing
February 2019

The efficacy of computerized cognitive drill and practice training for patients with a schizophrenia-spectrum disorder: A meta-analysis.

Authors:
Merel Prikken Mette J Konings Wan U Lei Marieke J H Begemann Iris E C Sommer

Schizophr Res 2019 02 7;204:368-374. Epub 2018 Aug 7.

Department of Neuroscience, Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.

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http://dx.doi.org/10.1016/j.schres.2018.07.034DOI Listing
February 2019

The Questionnaire for Psychotic Experiences: An Examination of the Validity and Reliability.

Authors:
Susan L Rossell Maya J L Schutte Wei Lin Toh Neil Thomas Clara Strauss Mascha M J Linszen Edwin van Dellen Sophie M Heringa Rob Teunisse Christina W Slotema Iris E C Sommer

Schizophr Bull 2019 02;45(45 Suppl 1):S78-S87

Department of Neuroscience and Department of Psychiatry, University Medical Center Groningen, The Netherlands.

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http://dx.doi.org/10.1093/schbul/sby148DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6357974PMC
February 2019

Draining the pond and catching the fish: Uncovering the ecosystem of auditory verbal hallucinations.

Authors:
Jasper Looijestijn Jan Dirk Blom Hans W Hoek Remco Renken Edith Liemburg Iris E C Sommer André Aleman Rutger Goekoop

Neuroimage Clin 2018 21;20:830-843. Epub 2018 Sep 21.

Parnassia Psychiatric Institute, Kiwistraat 43, 2552 DH The Hague, the Netherlands.

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http://dx.doi.org/10.1016/j.nicl.2018.09.016DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6169251PMC
January 2019

Cortical Brain Abnormalities in 4474 Individuals With Schizophrenia and 5098 Control Subjects via the Enhancing Neuro Imaging Genetics Through Meta Analysis (ENIGMA) Consortium.

Authors:
Theo G M van Erp Esther Walton Derrek P Hibar Lianne Schmaal Wenhao Jiang David C Glahn Godfrey D Pearlson Nailin Yao Masaki Fukunaga Ryota Hashimoto Naohiro Okada Hidenaga Yamamori Juan R Bustillo Vincent P Clark Ingrid Agartz Bryon A Mueller Wiepke Cahn Sonja M C de Zwarte Hilleke E Hulshoff Pol René S Kahn Roel A Ophoff Neeltje E M van Haren Ole A Andreassen Anders M Dale Nhat Trung Doan Tiril P Gurholt Cecilie B Hartberg Unn K Haukvik Kjetil N Jørgensen Trine V Lagerberg Ingrid Melle Lars T Westlye Oliver Gruber Bernd Kraemer Anja Richter David Zilles Vince D Calhoun Benedicto Crespo-Facorro Roberto Roiz-Santiañez Diana Tordesillas-Gutiérrez Carmel Loughland Vaughan J Carr Stanley Catts Vanessa L Cropley Janice M Fullerton Melissa J Green Frans A Henskens Assen Jablensky Rhoshel K Lenroot Bryan J Mowry Patricia T Michie Christos Pantelis Yann Quidé Ulrich Schall Rodney J Scott Murray J Cairns Marc Seal Paul A Tooney Paul E Rasser Gavin Cooper Cynthia Shannon Weickert Thomas W Weickert Derek W Morris Elliot Hong Peter Kochunov Lauren M Beard Raquel E Gur Ruben C Gur Theodore D Satterthwaite Daniel H Wolf Aysenil Belger Gregory G Brown Judith M Ford Fabio Macciardi Daniel H Mathalon Daniel S O'Leary Steven G Potkin Adrian Preda James Voyvodic Kelvin O Lim Sarah McEwen Fude Yang Yunlong Tan Shuping Tan Zhiren Wang Fengmei Fan Jingxu Chen Hong Xiang Shiyou Tang Hua Guo Ping Wan Dong Wei Henry J Bockholt Stefan Ehrlich Rick P F Wolthusen Margaret D King Jody M Shoemaker Scott R Sponheim Lieuwe De Haan Laura Koenders Marise W Machielsen Therese van Amelsvoort Dick J Veltman Francesca Assogna Nerisa Banaj Pietro de Rossi Mariangela Iorio Fabrizio Piras Gianfranco Spalletta Peter J McKenna Edith Pomarol-Clotet Raymond Salvador Aiden Corvin Gary Donohoe Sinead Kelly Christopher D Whelan Erin W Dickie David Rotenberg Aristotle N Voineskos Simone Ciufolini Joaquim Radua Paola Dazzan Robin Murray Tiago Reis Marques Andrew Simmons Stefan Borgwardt Laura Egloff Fabienne Harrisberger Anita Riecher-Rössler Renata Smieskova Kathryn I Alpert Lei Wang Erik G Jönsson Sanne Koops Iris E C Sommer Alessandro Bertolino Aurora Bonvino Annabella Di Giorgio Emma Neilson Andrew R Mayer Julia M Stephen Jun Soo Kwon Je-Yeon Yun Dara M Cannon Colm McDonald Irina Lebedeva Alexander S Tomyshev Tolibjohn Akhadov Vasily Kaleda Helena Fatouros-Bergman Lena Flyckt Geraldo F Busatto Pedro G P Rosa Mauricio H Serpa Marcus V Zanetti Cyril Hoschl Antonin Skoch Filip Spaniel David Tomecek Saskia P Hagenaars Andrew M McIntosh Heather C Whalley Stephen M Lawrie Christian Knöchel Viola Oertel-Knöchel Michael Stäblein Fleur M Howells Dan J Stein Henk S Temmingh Anne Uhlmann Carlos Lopez-Jaramillo Danai Dima Agnes McMahon Joshua I Faskowitz Boris A Gutman Neda Jahanshad Paul M Thompson Jessica A Turner

Biol Psychiatry 2018 11 14;84(9):644-654. Epub 2018 May 14.

Imaging Genetics and Neuroinformatics Lab, Georgia State University, Atlanta, Georgia; Mind Research Network, Albuquerque, New Mexico.

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http://dx.doi.org/10.1016/j.biopsych.2018.04.023DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6177304PMC
November 2018

Efficacy of typical and atypical antipsychotic medication on hostility in patients with psychosis-spectrum disorders: a review and meta-analysis.

Authors:
Margo D M Faay Pál Czobor Iris E C Sommer

Neuropsychopharmacology 2018 11 23;43(12):2340-2349. Epub 2018 Jul 23.

Department of Neuroscience and Department of Psychiatry, University Medical Center Groningen, Groningen, Netherlands.

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http://dx.doi.org/10.1038/s41386-018-0161-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180076PMC
November 2018

A novel concurrent TMS-fMRI method to reveal propagation patterns of prefrontal magnetic brain stimulation.

Authors:
Jord J T Vink Stefano Mandija Petar I Petrov Cornells A T van den Berg Iris E C Sommer Sebastiaan F W Neggers

Hum Brain Mapp 2018 11 29;39(11):4580-4592. Epub 2018 Aug 29.

Department of Psychiatry, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.

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http://doi.wiley.com/10.1002/hbm.24307
Publisher Site
http://dx.doi.org/10.1002/hbm.24307DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6221049PMC
November 2018

Immediate and long-term effects of bilateral electroconvulsive therapy on cognitive functioning in patients with a depressive disorder.

Authors:
Jasper O Nuninga Thomas F I Claessens Metten Somers René Mandl Wendy Nieuwdorp Marco P Boks Steven Bakker Marieke J H Begemann Sophie Heringa Iris E C Sommer

J Affect Disord 2018 10 20;238:659-665. Epub 2018 Jun 20.

Department of Neuroscience, University Medical Centre Groningen, The Netherlands; Department of Psychiatry, Rudolf Magnus Institute of Neuroscience, University Medical Center, Utrecht, The Netherlands; Department of Medical and Biological Psychology, University of Bergen, Norway.

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http://dx.doi.org/10.1016/j.jad.2018.06.040DOI Listing
October 2018

White matter abnormalities in 22q11.2 deletion syndrome patients showing cognitive decline.

Authors:
Jasper Olivier Nuninga Marc Marijn Bohlken Sanne Koops Ania M Fiksinski René C W Mandl Elemi J Breetvelt Sasja N Duijff René S Kahn Iris E C Sommer Jacob A S Vorstman

Psychol Med 2018 07 16;48(10):1655-1663. Epub 2017 Nov 16.

Department of Psychiatry,Rudolf Magnus Institute of Neuroscience, University Medical Center,Utrecht,The Netherlands.

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http://dx.doi.org/10.1017/S0033291717003142DOI Listing
July 2018

Childhood abuse and white matter integrity in bipolar disorder patients and healthy controls.

Authors:
Remi Stevelink Lucija Abramovic Sanne Verkooijen Marieke J H Begemann Iris E C Sommer Marco P Boks Rene C W Mandl Neeltje E M van Haren Christiaan H Vinkers

Eur Neuropsychopharmacol 2018 07 2;28(7):807-817. Epub 2018 Jun 2.

Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.euroneuro.2018.05.003DOI Listing
July 2018

Auditory Verbal Hallucinations in Borderline Personality Disorder and the Efficacy of Antipsychotics: A Systematic Review.

Authors:
Christina W Slotema Jan Dirk Blom Marieke B A Niemantsverdriet Iris E C Sommer

Front Psychiatry 2018 31;9:347. Epub 2018 Jul 31.

Department of Neuroscience, University Medical Center Groningen, Groningen, Netherlands.

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http://dx.doi.org/10.3389/fpsyt.2018.00347DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6079212PMC
July 2018

Successful treatment of intractable visual hallucinations with 5-HT antagonist ketanserin.

Authors:
Iris E C Sommer Hidde Kleijer Lucy Visser Teus van Laar

BMJ Case Rep 2018 Jun 27;2018. Epub 2018 Jun 27.

Department of Neurology, Universitair Medisch Centrum Groningen, Groningen, The Netherlands.

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http://dx.doi.org/10.1136/bcr-2018-224340DOI Listing
June 2018

Predicting response to rTMS for auditory hallucinations: Younger patients and females do better.

Authors:
Sanne Koops Christina W Slotema Claire Kos Leonie Bais André Aleman Jan Dirk Blom Iris E C Sommer

Schizophr Res 2018 05 6;195:583-584. Epub 2017 Sep 6.

Psychiatry Department, University Medical Center Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands,; Brain Center Rudolf Magnus, Universiteitsweg 100, 3584 CG Utrecht, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.schres.2017.08.060DOI Listing
May 2018

Understanding hallucinations in probable Alzheimer's disease: Very low prevalence rates in a tertiary memory clinic.

Authors:
Mascha M J Linszen Afina W Lemstra Meenakshi Dauwan Rachel M Brouwer Philip Scheltens Iris E C Sommer

Alzheimers Dement (Amst) 2018 21;10:358-362. Epub 2018 Apr 21.

Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.dadm.2018.03.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6019263PMC
April 2018

Childhood abuse and white matter integrity in bipolar disorder patients and healthy controls.

Authors:
Remi Stevelink Lucija Abramovic Sanne Verkooijen Marieke J H Begemann Iris E C Sommer Marco P Boks Rene C W Mandl Neeltje E M van Haren Christiaan H Vinkers

Eur Neuropsychopharmacol 2018 07 2;28(7):807-817. Epub 2018 Jun 2.

Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.euroneuro.2018.05.003DOI Listing
July 2018

Negative Beliefs about Voices in Patients with Borderline Personality Disorder Are Associated with Distress: A Plea for Cognitive-Behavioural Therapy?

Authors:
Christina W Slotema Jan Dirk Blom Mathijs Deen Marieke B A Niemantsverdriet Mark van der Gaag Hans W Hoek Iris E C Sommer

Psychopathology 2017 22;50(4):255-261. Epub 2017 Jul 22.

Parnassia Psychiatric Institute, The Hague, The Netherlands.

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http://dx.doi.org/10.1159/000477669DOI Listing
February 2018

Transcranial direct current stimulation (tDCS) as a treatment for visual hallucinations: A case study.

Authors:
Sanne Koops Iris E C Sommer

Psychiatry Res 2017 12 2;258:616-617. Epub 2017 Apr 2.

University Medical Center Utrecht and Brain Center Rudolf Magnus, Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.psychres.2017.03.054DOI Listing
December 2017

Hallucinations in borderline personality disorder: Prevalence, characteristics and associations with comorbid symptoms and disorders.

Authors:
Maria B A Niemantsverdriet Christina W Slotema Jan Dirk Blom Ingmar H Franken Hans W Hoek Iris E C Sommer Mark van der Gaag

Sci Rep 2017 10 24;7(1):13920. Epub 2017 Oct 24.

Department of Clinical Psychology and Amsterdam Public Health Research Institute, VU University, Amsterdam, The Netherlands.

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http://dx.doi.org/10.1038/s41598-017-13108-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5654997PMC
October 2017

How much detail is needed in modeling a transcranial magnetic stimulation figure-8 coil: Measurements and brain simulations.

Authors:
Petar I Petrov Stefano Mandija Iris E C Sommer Cornelis A T van den Berg Sebastiaan F W Neggers

PLoS One 2017 22;12(6):e0178952. Epub 2017 Jun 22.

Dept of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, the Netherlands.

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0178952PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5480865PMC
September 2017

Children seeking help for auditory verbal hallucinations; who are they?

Authors:
Kim Maijer Saskia J M C Palmen Iris E C Sommer

Schizophr Res 2017 05 27;183:31-35. Epub 2016 Oct 27.

University Medical Center Utrecht, Brain Center Rudolf Magnus, Department of Psychiatry, Heidelberglaan 100, 3485CX Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.schres.2016.10.033DOI Listing
May 2017

Understanding the biophysical effects of transcranial magnetic stimulation on brain tissue: the bridge between brain stimulation and cognition.

Authors:
Sebastiaan F W Neggers Petar I Petrov Stefano Mandija Iris E C Sommer Nico A T van den Berg

Prog Brain Res 2015 4;222:229-59. Epub 2015 Aug 4.

Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/bs.pbr.2015.06.015DOI Listing
November 2016

Instrumental measurements of spontaneous dyskinesia and schizotypy in subjects with auditory verbal hallucinations and healthy controls.

Authors:
Anne E Willems Iris E C Sommer Diederik E Tenback Jeroen P F Koning Peter N van Harten

Psychiatry Res 2016 Oct 7;244:24-7. Epub 2016 Jul 7.

Psychiatric Centre GGz Centraal, Innova, Research Department, Postbus 3051, 3800 DB Amersfoort, The Netherlands; Faculty of Health Medicine and Life Sciences, University Maastricht, Department of Mental Health and Neuroscience, Postbus 616, 6200 MD Maastricht, The Netherlands. Electronic address:

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https://linkinghub.elsevier.com/retrieve/pii/S01651781163002
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http://dx.doi.org/10.1016/j.psychres.2016.06.028DOI Listing
October 2016

Childhood Trauma as a Neglected Factor in Psychotic Experiences and Cognitive Functioning.

Authors:
Marieke J H Begemann Sophie M Heringa Iris E C Sommer

JAMA Psychiatry 2016 08;73(8):875-6

Department of Psychiatry, University Medical Center Utrecht, Utrecht, the Netherlands2Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, the Netherlands.

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http://dx.doi.org/10.1001/jamapsychiatry.2016.0924DOI Listing
August 2016

Random forest to differentiate dementia with Lewy bodies from Alzheimer's disease.

Authors:
Meenakshi Dauwan Jessica J van der Zande Edwin van Dellen Iris E C Sommer Philip Scheltens Afina W Lemstra Cornelis J Stam

Alzheimers Dement (Amst) 2016 19;4:99-106. Epub 2016 Aug 19.

Department of Clinical Neurophysiology and MEG Center, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.

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http://dx.doi.org/10.1016/j.dadm.2016.07.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5050257PMC
August 2016

Theta Burst Transcranial Magnetic Stimulation for Auditory Verbal Hallucinations: Negative Findings From a Double-Blind-Randomized Trial.

Authors:
Sanne Koops Edwin van Dellen Maya J L Schutte Wendy Nieuwdorp Sebastiaan F W Neggers Iris E C Sommer

Schizophr Bull 2016 Jan 28;42(1):250-7. Epub 2015 Jul 28.

Psychiatry Department, University Medical Center Utrecht, Utrecht, The Netherlands; Brain Center Rudolf Magnus, Utrecht, The Netherlands.

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https://academic.oup.com/schizophreniabulletin/article-looku
Publisher Site
http://dx.doi.org/10.1093/schbul/sbv100DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4681555PMC
January 2016

Simvastatin augmentation for recent-onset psychotic disorder: A study protocol.

Authors:
Marieke J H Begemann Maya J L Schutte Margot I E Slot Janine Doorduin P Roberto Bakker Neeltje E M van Haren Iris E C Sommer

BBA Clin 2015 Dec 3;4:52-58. Epub 2015 Jul 3.

Department of Psychiatry, University Medical Center Utrecht (UMCU), Utrecht and Brain Center Rudolf Magnus (BCRM), Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.bbacli.2015.06.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4661708PMC
December 2015

Sex hormones and oxytocin augmentation strategies in schizophrenia: A quantitative review.

Authors:
Sophie M Heringa Marieke J H Begemann Angelique J Goverde Iris E C Sommer

Schizophr Res 2015 Nov 23;168(3):603-13. Epub 2015 Apr 23.

University Medical Center Utrecht, Brain Center Rudolf Magnus, Department of Psychiatry, PO Box 85500, 3508 GA Utrecht, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.schres.2015.04.002DOI Listing
November 2015

Transcranial magnetic stimulation, transcranial direct current stimulation and electroconvulsive therapy for medication-resistant psychosis of schizophrenia.

Authors:
Wendy Nieuwdorp Sanne Koops Metten Somers Iris E C Sommer

Curr Opin Psychiatry 2015 May;28(3):222-8

aDepartment of Psychiatry, University Medical Centre Utrecht bBrain Center Rudolf Magnus, Utrecht, The Netherlands.

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May 2015

Childhood trauma-specific reductions in limbic gray matter volume: still in the dark.

Authors:
Marieke J H Begemann Maya J L Schutte Iris E C Sommer

JAMA Psychiatry 2015 Apr;72(4):398

Department of Psychiatry, University Medical Center Utrecht and Brain Center Rudolf Magnus, Utrecht, the Netherlands.

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http://dx.doi.org/10.1001/jamapsychiatry.2014.2680DOI Listing
April 2015

Musical hallucinations treated with acetylcholinesterase inhibitors.

Authors:
Jan Dirk Blom Jan Adriaan F Coebergh René Lauw Iris E C Sommer

Front Psychiatry 2015 7;6:46. Epub 2015 Apr 7.

Department of Psychiatry, University Medical Center Utrecht , Utrecht , Netherlands ; Rudolf Magnus Institute of Neuroscience , Utrecht , Netherlands.

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http://dx.doi.org/10.3389/fpsyt.2015.00046DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4387860PMC
April 2015

Transcranial direct current stimulation as a treatment for auditory hallucinations.

Authors:
Sanne Koops Hilde van den Brink Iris E C Sommer

Front Psychol 2015 6;6:244. Epub 2015 Mar 6.

Psychiatry Department, Brain Center Rudolf Magnus, University Medical Center Utrecht Utrecht, Netherlands.

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http://dx.doi.org/10.3389/fpsyg.2015.00244DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4351567PMC
March 2015

High frequency rTMS; a more effective treatment for auditory verbal hallucinations?

Authors:
Antoin D de Weijer Iris E C Sommer Anne Lotte Meijering Mirjam Bloemendaal Sebastiaan F W Neggers Kirstin Daalman Eduard H J F Boezeman

Psychiatry Res 2014 Dec 19;224(3):204-10. Epub 2014 Oct 19.

Department of Clinical Neurophysiology, St. Antonius Hospital Nieuwegein, The Netherlands.

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http://dx.doi.org/10.1016/j.pscychresns.2014.10.007DOI Listing
December 2014

Prosopometamorphopsia and facial hallucinations.

Authors:
Jan Dirk Blom Iris E C Sommer Sanne Koops Oliver W Sacks

Lancet 2014 Nov;384(9958):1998

New York University School of Medicine, New York, USA.

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http://dx.doi.org/10.1016/S0140-6736(14)61690-1DOI Listing
November 2014

A setup for administering TMS to medial and lateral cortical areas during whole-brain FMRI recording.

Authors:
Antoin D de Weijer Iris E C Sommer Erwin J Bakker Mirjam Bloemendaal Chris J G Bakker Dennis W J Klomp Sven Bestmann Sebastiaan F W Neggers

J Clin Neurophysiol 2014 Oct;31(5):474-87

*Department of Psychiatry, Rudolf Magnus Institute of Neuroscience, University Medical Center, Utrecht, the Netherlands; †Nuffield Department of Clinical Neurosciences, Oxford Centre for Functional MRI of the Brain (FMRIB), University of Oxford, Oxford, United Kingdom; ‡Department of Medical Technology and Clinical Physics, University Medical Center, Utrecht, the Netherlands; §Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands; ‖Imaging Science Institute, University Medical Center, Utrecht, the Netherlands; and ¶Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, United Kingdom.

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http://dx.doi.org/10.1097/WNP.0000000000000075DOI Listing
October 2014

Review of the efficacy of transcranial magnetic stimulation for auditory verbal hallucinations.

Authors:
Christina W Slotema Jan D Blom Remko van Lutterveld Hans W Hoek Iris E C Sommer

Biol Psychiatry 2014 Jul 25;76(2):101-10. Epub 2013 Oct 25.

Department of Psychiatry and Rudolf Magnus Institute for Neuroscience University Medical Centre Utrecht, Utrecht.

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http://dx.doi.org/10.1016/j.biopsych.2013.09.038DOI Listing
July 2014

The auditory dorsal stream plays a crucial role in projecting hallucinated voices into external space.

Authors:
Jasper Looijestijn Kelly M J Diederen Rutger Goekoop Iris E C Sommer Kirstin Daalman René S Kahn Hans W Hoek Jan Dirk Blom

Schizophr Res 2013 May 1;146(1-3):314-9. Epub 2013 Mar 1.

Parnassia Psychiatric Institute, Kiwistraat 43, 2552 DH The Hague, the Netherlands.

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May 2013

The influence of stimulus detection on activation patterns during auditory hallucinations.

Authors:
Remko van Lutterveld Kelly M J Diederen Sanne Koops Marieke J H Begemann Iris E C Sommer

Schizophr Res 2013 Apr 1;145(1-3):27-32. Epub 2013 Feb 1.

Department of Psychiatry, University Medical Center, Utrecht, The Netherlands.

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April 2013

Childhood trauma and auditory verbal hallucinations.

Authors:
K Daalman K M J Diederen E M Derks R van Lutterveld R S Kahn Iris E C Sommer

Psychol Med 2012 Dec 16;42(12):2475-84. Epub 2012 Apr 16.

Department of Psychiatry, Neuroscience Division, University Medical Center Utrecht and Rudolf Magnus Institute for Neuroscience, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.

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http://dx.doi.org/10.1017/S0033291712000761DOI Listing
December 2012

Oscillatory cortical network involved in auditory verbal hallucinations in schizophrenia.

Authors:
Remko van Lutterveld Arjan Hillebrand Kelly M J Diederen Kirstin Daalman René S Kahn Cornelis J Stam Iris E C Sommer

PLoS One 2012 23;7(7):e41149. Epub 2012 Jul 23.

Department of Psychiatry, University Medical Center, and Rudolf Magnus Institute of Neuroscience, Utrecht, The Netherlands.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3402538PMC
November 2012

Neuroimaging of voice hearing in non-psychotic individuals: a mini review.

Authors:
Kelly Maria Johanna Diederen Remko van Lutterveld Iris E C Sommer

Front Hum Neurosci 2012 9;6:111. Epub 2012 May 9.

Neuroscience Division, Rudolf Magnus Institute for Neuroscience, University Medical Center Utrecht Utrecht, Netherlands.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3348719PMC
October 2012

Auditory hallucinations elicit similar brain activation in psychotic and nonpsychotic individuals.

Authors:
Kelly M J Diederen Kirstin Daalman Antoin D de Weijer Sebastiaan F W Neggers Willemijn van Gastel Jan Dirk Blom René S Kahn Iris E C Sommer

Schizophr Bull 2012 Sep 28;38(5):1074-82. Epub 2011 Apr 28.

Department of Psychiatry, Neuroscience Division, Rudolf Magnus Institute for Neuroscience, University Medical Center Utrecht, The Netherlands.

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http://dx.doi.org/10.1093/schbul/sbr033DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3446229PMC
September 2012

The influence of semantic top-down processing in auditory verbal hallucinations.

Authors:
Kirstin Daalman Sanne Verkooijen Eske M Derks André Aleman Iris E C Sommer

Schizophr Res 2012 Aug 20;139(1-3):82-6. Epub 2012 Jun 20.

Department of Psychiatry, Neuroscience Division, University Medical Center Utrecht & Rudolf Magnus Institute for Neuroscience, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.schres.2012.06.005DOI Listing
August 2012

The treatment of hallucinations in schizophrenia spectrum disorders.

Authors:
Iris E C Sommer Christina W Slotema Zafiris J Daskalakis Eske M Derks Jan Dirk Blom Mark van der Gaag

Schizophr Bull 2012 Jun 24;38(4):704-14. Epub 2012 Feb 24.

Neuroscience Division, Psychiatry Department, University Medical Centre Utrecht & Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, PO Box 85500, 3508 GA, Utrecht, the Netherlands.

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http://dx.doi.org/10.1093/schbul/sbs034DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3577047PMC
June 2012

The effect of rTMS on auditory hallucinations: clues from an EEG-rTMS study.

Authors:
Remko van Lutterveld Sanne Koops Dennis J L G Schutter Ellen Geertsema Cornelis J Stam René S Kahn Iris E C Sommer

Schizophr Res 2012 May 30;137(1-3):174-9. Epub 2012 Jan 30.

Department of Psychiatry, University Medical Center, Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.schres.2012.01.010DOI Listing
May 2012

Treatment of Alice in Wonderland syndrome and verbal auditory hallucinations using repetitive transcranial magnetic stimulation: a case report with fMRI findings.

Authors:
Jan Dirk Blom Jasper Looijestijn Rutger Goekoop Kelly M J Diederen Anne-Marije Rijkaart Christina W Slotema Iris E C Sommer

Psychopathology 2011 7;44(5):337-44. Epub 2011 Jul 7.

Parnassia Bavo Group, The Hague, The Netherlands.

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http://dx.doi.org/10.1159/000325102DOI Listing
December 2011

Cannabis with high cannabidiol content is associated with fewer psychotic experiences.

Authors:
Christian D Schubart Iris E C Sommer Willemijn A van Gastel Rogier L Goetgebuer René S Kahn Marco P M Boks

Schizophr Res 2011 Aug 17;130(1-3):216-21. Epub 2011 May 17.

Rudolf Magnus Institute of Neuroscience, University Medical Centre Utrecht, Department of Psychiatry, The Netherlands.

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http://dx.doi.org/10.1016/j.schres.2011.04.017DOI Listing
August 2011

Human fronto-tectal and fronto-striatal-tectal pathways activate differently during anti-saccades.

Authors:
Antoin D de Weijer Rene C W Mandl Iris E C Sommer Matthijs Vink Rene S Kahn Sebastiaan F W Neggers

Front Hum Neurosci 2010 26;4:41. Epub 2010 May 26.

Department of Psychiatry, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht Utrecht, Netherlands.

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http://dx.doi.org/10.3389/fnhum.2010.00041DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2903195PMC
July 2011

The neurophysiology of auditory hallucinations - a historical and contemporary review.

Authors:
Remko van Lutterveld Iris E C Sommer Judith M Ford

Front Psychiatry 2011 16;2:28. Epub 2011 May 16.

Department of Psychiatry, University Medical Center Utrecht, Netherlands.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3099363PMC
July 2011

Reduced language lateralization in first-episode medication-naive schizophrenia.

Authors:
Nicoletta M J van Veelen Matthijs Vink Nick F Ramsey Iris E C Sommer Mariët van Buuren Janna Marie Hoogendam René S Kahn

Schizophr Res 2011 Apr 14;127(1-3):195-201. Epub 2011 Jan 14.

Rudolf Magnus Institute of Neuroscience, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.schres.2010.12.013DOI Listing
April 2011

Can low-frequency repetitive transcranial magnetic stimulation really relieve medication-resistant auditory verbal hallucinations? Negative results from a large randomized controlled trial.

Authors:
Christina W Slotema Jan Dirk Blom Antoin D de Weijer Kelly M Diederen Rutger Goekoop Jasper Looijestijn Kirstin Daalman Anne-Marije Rijkaart René S Kahn Hans W Hoek Iris E C Sommer

Biol Psychiatry 2011 Mar 7;69(5):450-6. Epub 2010 Dec 7.

Parnassia Bavo Psychiatric Institute, Lijnbaan 4, The Hague, The Netherlands.

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http://dx.doi.org/10.1016/j.biopsych.2010.09.051DOI Listing
March 2011

The same or different? A phenomenological comparison of auditory verbal hallucinations in healthy and psychotic individuals.

Authors:
Kirstin Daalman Marco P M Boks Kelly M J Diederen Antoin D de Weijer Jan Dirk Blom René S Kahn Iris E C Sommer

J Clin Psychiatry 2011 Mar;72(3):320-5

Rudolf Magnus Institute of Neuroscience, Utrecht, the Netherlands.

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http://dx.doi.org/10.4088/JCP.09m05797yelDOI Listing
March 2011

Decreased language lateralization is characteristic of psychosis, not auditory hallucinations.

Authors:
Kelly M J Diederen Antoin D De Weijer Kirstin Daalman Jan Dirk Blom Sebastiaan F W Neggers René S Kahn Iris E C Sommer

Brain 2010 Dec 19;133(Pt 12):3734-44. Epub 2010 Nov 19.

Neuroscience Division, Department of Psychiatry, University Medical Centre Utrecht and Rudolf Magnus Institute for Neuroscience, Heidelberglaan, The Netherlands.

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http://dx.doi.org/10.1093/brain/awq313DOI Listing
December 2010

Increased psychophysiological parameters of attention in non-psychotic individuals with auditory verbal hallucinations.

Authors:
Remko van Lutterveld Bob Oranje Chantal Kemner Lucija Abramovic Anne E Willems Marco P M Boks Birte Y Glenthøj René S Kahn Iris E C Sommer

Schizophr Res 2010 Aug 21;121(1-3):153-9. Epub 2010 May 21.

Neuroscience Division, University Medical Center Utrecht and Rudolf Magnus Institute for Neuroscience, Utrecht, The Netherlands.

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August 2010

Should we expand the toolbox of psychiatric treatment methods to include Repetitive Transcranial Magnetic Stimulation (rTMS)? A meta-analysis of the efficacy of rTMS in psychiatric disorders.

Authors:
Christina W Slotema Jan Dirk Blom Hans W Hoek Iris E C Sommer

J Clin Psychiatry 2010 Jul 9;71(7):873-84. Epub 2010 Mar 9.

Center for Personality Disorders, Lijnbaan 4, The Hague, the Netherlands.

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July 2010

Schizophrenia risk factors constitute general risk factors for psychiatric symptoms in the population.

Authors:
Elemi J Breetvelt Marco P M Boks Mattijs E Numans Jean-Paul Selten Iris E C Sommer Diederick E Grobbee René S Kahn Mirjam I Geerlings

Schizophr Res 2010 Jul 24;120(1-3):184-90. Epub 2010 Apr 24.

Rudolf Magnus Institute of Neuroscience, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands.

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July 2010

Healthy individuals with auditory verbal hallucinations; who are they? Psychiatric assessments of a selected sample of 103 subjects.

Authors:
Iris E C Sommer Kirstin Daalman Thomas Rietkerk Kelly M Diederen Steven Bakker Jaap Wijkstra Marco P M Boks

Schizophr Bull 2010 May 9;36(3):633-41. Epub 2008 Oct 9.

Neuroscience Division University Medical Center Utrecht, B01.206, Rudolf Magnus School for Neuroscience, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.

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http://dx.doi.org/10.1093/schbul/sbn130DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2879692PMC
May 2010

Deactivation of the parahippocampal gyrus preceding auditory hallucinations in schizophrenia.

Authors:
Kelly M J Diederen Sebastiaan F W Neggers Kirstin Daalman Jan Dirk Blom Rutger Goekoop René S Kahn Iris E C Sommer

Am J Psychiatry 2010 Apr 1;167(4):427-35. Epub 2010 Feb 1.

Department of Psychiatry, Neuroscience Division, University Medical Center, Utrecht, The Netherlands.

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http://dx.doi.org/10.1176/appi.ajp.2009.09040456DOI Listing
April 2010

Auditory hallucinations: nomenclature and classification.

Authors:
Jan Dirk Blom Iris E C Sommer

Cogn Behav Neurol 2010 Mar;23(1):55-62

Department of Psychiatry, University of Groningen, Parnassia Bavo Group, 2552 HX The Hague, The Netherlands.

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http://dx.doi.org/10.1097/WNN.0b013e3181b2791eDOI Listing
March 2010

Auditory verbal hallucinations predominantly activate the right inferior frontal area.

Authors:
Iris E C Sommer Kelly M J Diederen Jan-Dirk Blom Anne Willems Leila Kushan Karin Slotema Marco P M Boks Kirstin Daalman Hans W Hoek Sebastiaan F W Neggers René S Kahn

Brain 2008 Dec 13;131(Pt 12):3169-77. Epub 2008 Oct 13.

Neuroscience Division, University Medical Center Utrecht & Rudolf Magnus Institute for Neuroscience, Heidelberglaan, Netherlands.

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http://dx.doi.org/10.1093/brain/awn251DOI Listing
December 2008

A vanishing lesion in the temporal lobe associated with schizophrenialike psychosis and catatonia.

Authors:
Kuan H Kho Nicoletta M J van Veelen Lucas J Beerepoot Iris E C Sommer

Cogn Behav Neurol 2007 Dec;20(4):232-4

Department of Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands.

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December 2007

The influence of amphetamine on language activation: an fMRI study.

Authors:
Iris E C Sommer Bob Oranje Nick F Ramsey Floris A Klerk René C W Mandl Herman G M Westenberg René S Kahn

Psychopharmacology (Berl) 2006 Jan 12;183(4):387-93. Epub 2005 Nov 12.

Rudolf Magnus Institute of Neuroscience Psychiatry Department, University Medical Center Utrecht, Heidelberglaan 100, 3584CX, Utrecht, The Netherlands.

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January 2006

Do women really have more bilateral language representation than men? A meta-analysis of functional imaging studies.

Authors:
Iris E C Sommer André Aleman Anke Bouma René S Kahn

Brain 2004 Aug 7;127(Pt 8):1845-52. Epub 2004 Jul 7.

Department of Psychiatry, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.

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August 2004

Language activation in monozygotic twins discordant for schizophrenia.

Authors:
Iris E C Sommer Nick F Ramsey René C W Mandl Clarine J van Oel Renée S Kahn

Br J Psychiatry 2004 Feb;184:128-35

Rudolf Magnus Institute of Neuroscience Psychiatry Department, University Medical Center, Utrecht, The Netherlands.

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February 2004

Left with the voices or hearing right? Lateralization of auditory verbal hallucinations in schizophrenia.

Authors:
Iris E C Sommer André Aleman René S Kahn

J Psychiatry Neurosci 2003 May;28(3):217-8; author reply 218-9

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May 2003