J
Jan Berend Deijen
Researcher at VU University Amsterdam
Publications - 101
Citations - 3825
Jan Berend Deijen is an academic researcher from VU University Amsterdam. The author has contributed to research in topics: Growth hormone deficiency & Cognition. The author has an hindex of 33, co-authored 98 publications receiving 3484 citations. Previous affiliations of Jan Berend Deijen include VU University Medical Center & International Business Broker's Association.
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Journal ArticleDOI
Slowing of oscillatory brain activity is a stable characteristic of Parkinson's disease without dementia
Diederick Stoffers,J.L.W. Bosboom,Jan Berend Deijen,Erik Ch. Wolters,Henk W. Berendse,Cornelis J. Stam +5 more
TL;DR: Widespread slowing of oscillatory brain activity is a characteristic of non-demented Parkinson's disease patients from the earliest clinical stages onwards that is (largely) independent of disease duration, stage and severity and hardly influenced by dopaminomimetic treatment.
Journal ArticleDOI
Disrupted brain network topology in Parkinson's disease: a longitudinal magnetoencephalography study.
Kim T. E. Olde Dubbelink,Arjan Hillebrand,Diederick Stoffers,Jan Berend Deijen,Jos W. R. Twisk,Cornelis J. Stam,Henk W. Berendse +6 more
TL;DR: It is observed that brain networks in early stage untreated patients displayed lower local clustering with preserved path length in the delta frequency band in comparison to controls, and impaired local efficiency and network decentralization are very early features of Parkinson's disease that continue to progress over time.
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Cognitive impairments and mood disturbances in growth hormone deficient men
TL;DR: It was concluded that, from a psychological point of view, MPHD and IGHD adult patients are quite distinct groups.
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Cognitive changes during growth hormone replacement in adult men
TL;DR: It is concluded that GH replacement improves memory function in adults with CO-GHD and has no effect on psychological well-being or perceptual-motor skill.
Journal ArticleDOI
Physical activity and executive functions in the elderly with mild cognitive impairment
Erik J. A. Scherder,J. Van Paasschen,Jan Berend Deijen,S. Van Der Knokke,J. F. K. Orlebeke,I. Burgers,P.-P. Devriese,Dick F. Swaab,Joseph A. Sergeant +8 more
TL;DR: The results show that although a (nearly) significant improvement in tasks appealing to EF was observed in both the walking group and the hand/face group compared to the control group, the results should be interpreted with caution.