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| 001 | 902029 | ||
| 005 | 20211130111104.0 | ||
| 024 | 7 | _ | |a 10.1016/j.parkreldis.2021.10.019 |2 doi |
| 024 | 7 | _ | |a 1353-8020 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2021-03987 |
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| 100 | 1 | _ | |a Brcina, Nikolina |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Increased neural motor activation and functional reorganization in patients with idiopathic rapid eye movement sleep behavior disorder |
| 260 | _ | _ | |a Amsterdam [u.a.] |c 2021 |b Elsevier Science |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a IntroductionAltered brain activity and functional reorganization patterns during self-initiated movements have been reported in early pre-motor and motor stages of Parkinson's disease. The aim of this study was to investigate whether similar alterations can be observed in patients with idiopathic REM-sleep behavior disorder (RBD).Methods13 polysomnography-confirmed male and right-handed RBD patients and 13 healthy controls underwent a bilateral hand-movement fMRI task including internally selected (INT) and externally-guided (EXT) movement conditions for each hand. We examined functional activity and connectivity differences between groups and task-conditions, structural differences using voxel-based morphometry, as well as associations between functional activity and clinical variables.ResultsNo group differences were observed in fMRI-task performance or in voxel-based morphometry. Both groups showed faster reaction times and exhibited greater neural activation when movements were internally selected compared to externally-guided tasks. Compared to controls, RBD patients displayed stronger activation in the dorsolateral prefrontal cortex and primary somatosensory cortex during INT-tasks, and in the right fronto-insular cortex during EXT-tasks performed with the non-dominant hand. Stronger activation in RBD patients was associated with cognitive and olfactory impairment. Connectivity analysis demonstrated overall less interregional coupling in patients compared to controls. In particular, patients showed reduced temporo-cerebellar, occipito-cerebellar and intra-cerebellar connectivity, but stronger connectivity in fronto-cerebellar and fronto-occipital pathways.ConclusionThe observed stronger activation during hand-movement tasks and connectivity changes in RBD may reflect early compensatory and reorganization patterns in order to preserve motor functioning. Our findings may contribute to a better understanding and prognosis of prodromal stages of α-synucleinopathies. |
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| 700 | 1 | _ | |a Hohenfeld, Christian |0 P:(DE-Juel1)162295 |b 1 |
| 700 | 1 | _ | |a Heidbreder, Anna |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Mirzazade, Shahram |0 0000-0002-4071-7511 |b 3 |
| 700 | 1 | _ | |a Krahe, Janna |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Wojtala, Jennifer |0 0000-0003-1782-8341 |b 5 |
| 700 | 1 | _ | |a Binkofski, Ferdinand |0 P:(DE-Juel1)142495 |b 6 |
| 700 | 1 | _ | |a Schulz, Jörg B. |0 P:(DE-Juel1)171786 |b 7 |
| 700 | 1 | _ | |a Schiefer, Johannes |0 P:(DE-HGF)0 |b 8 |
| 700 | 1 | _ | |a Reetz, Kathrin |0 P:(DE-Juel1)177889 |b 9 |e Corresponding author |
| 700 | 1 | _ | |a Dogan, Imis |0 P:(DE-HGF)0 |b 10 |
| 773 | _ | _ | |a 10.1016/j.parkreldis.2021.10.019 |g p. S1353802021003771 |0 PERI:(DE-600)2027635-7 |p 76-82 |t Parkinsonism & related disorders |v 92 |y 2021 |x 1353-8020 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/902029/files/2021_Brcina_ParkRelatDisord_postp.pdf |y Published on 2021-10-20. Available in OpenAccess from 2022-10-20. |
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