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Iris E. C. Sommer
Researcher at University Medical Center Groningen
Publications - 454
Citations - 20580
Iris E. C. Sommer is an academic researcher from University Medical Center Groningen. The author has contributed to research in topics: Schizophrenia & Medicine. The author has an hindex of 68, co-authored 394 publications receiving 16545 citations. Previous affiliations of Iris E. C. Sommer include University of Toronto & University of Michigan.
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The Magic of Movement; the Potential of Exercise to Improve Cognition
Iris E. C. Sommer,René S. Kahn +1 more
TL;DR: Both aerobic training and resistance training have the potential to improve cognition, while the combination of both yields the strongest improvement in cognitive functioning, making it an excellent tool for secondary and tertiary prevention.
Journal ArticleDOI
Hallucinations in Older Adults: A Practical Review.
Johanna C. Badcock,Frank Larøi,Frank Larøi,Frank Larøi,Karina Stengaard Kamp,India Kelsall-Foreman,Romola S. Bucks,Michael Weinborn,Marieke I. Begemann,John-Paul Taylor,Daniel Collerton,John T. O'Brien,Mohamad El Haj,Dominic Ffytche,Iris E. C. Sommer +14 more
TL;DR: This article provides a concise narrative review and critique of workforce competency and training issues, assessment tools, and current treatments and management guidelines, and concludes with a brief summary including suggestions for service and training providers and future research.
Journal ArticleDOI
A look into hallucinations: the relationship between visual imagery and hallucinations in Alzheimer's disease.
Mohamad El Haj,Johanna C. Badcock,Renaud Jardri,Frank Larøi,Jean Roche,Iris E. C. Sommer,Karim Gallouj +6 more
TL;DR: These results demonstrate a selective relationship between the occurrence of visual (but not auditory) hallucinations and the ability to generate vivid visual images in AD and no significant correlations were observed between auditory hallucinations and vividness of visual imagery in healthy control participants.
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Occurrence and phenomenology of hallucinations in the general population: A large online survey
Mascha M. J. Linszen,J. de Boer,Maya J. L. Schutte,Marieke J. H. Begemann,J. de Vries,Sanne Koops,Renske E. Blom,Marc M. Bohlken,Sophie M. Heringa,Jan Dirk Blom,Iris E. C. Sommer +10 more
TL;DR: In this paper , the authors investigated the phenomenological characteristics of hallucination in the general population, by using a nationally promoted online survey to assess hallucination phenomenology in four sensory modalities, through a self-report version of the Questionnaire for Psychotic Experiences (QPE), in 10,448 participants (aged 14-88 years).
Journal ArticleDOI
Longitudinal clinical and functional outcome in distinct cognitive subgroups of first-episode psychosis: a cluster analysis
Priscilla P. Oomen,Marieke J. H. Begemann,Bodyl A Brand,Lieuwe de Haan,Wim Veling,Sanne Koops,Jim van Os,Jim van Os,Jim van Os,Filip Smit,P. Roberto Bakker,Nico J.M. van Beveren,Nynke Boonstra,Sinan Guloksuz,Sinan Guloksuz,Martijn J. Kikkert,Joran Lokkerbol,Machteld Marcelis,Bram-Sieben Rosema,Franciska de Beer,Shiral S. Gangadin,Chris N W Geraets,Erna van ‘t Hag,Yudith R A Haveman,Inge van der Heijden,Inge van der Heijden,A E Voppel,Elske Willemse,Therese van Amelsvoort,Maarten Bak,Albert Batalla,Agaath Been,Marinte van den Bosch,Truus van den Brink,G. Faber,Koen P. Grootens,Martin de Jonge,Rikus Knegtering,Jörg Kurkamp,Amrita G.S. Mahabir,Gerdina H. M. Pijnenborg,Tonnie Staring,Natalie D. Veen,Selene R. T. Veerman,Sybren Wiersma,Ellen Graveland,Joelle Hoornaar,Iris E. C. Sommer +47 more
TL;DR: In this paper, the authors identify cognitive subgroups in a large sample of first-episode psychosis using a clustering approach with healthy controls as a reference group, subsequently linking cognitive sub groups to clinical and functional outcomes.