2013
Similar circuits but different connectivity patterns between the cerebellum, Basal Ganglia, and supplementary motor area in early Parkinson's disease patients and controls during predictive motor timing
HUSÁROVÁ, Ivica, Michal MIKL, Ovidiu V. LUNGU, Radek MAREČEK, Jiří VANÍČEK et. al.Základní údaje
Originální název
Similar circuits but different connectivity patterns between the cerebellum, Basal Ganglia, and supplementary motor area in early Parkinson's disease patients and controls during predictive motor timing
Autoři
HUSÁROVÁ, Ivica (703 Slovensko, domácí), Michal MIKL (203 Česká republika, domácí), Ovidiu V. LUNGU (124 Kanada), Radek MAREČEK (203 Česká republika, domácí), Jiří VANÍČEK (203 Česká republika, domácí) a Martin BAREŠ (203 Česká republika, garant, domácí)
Vydání
Journal of Neuroimaging, Hoboken, USA, WILEY-BLACKWELL, 2013, 1051-2284
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30000 3. Medical and Health Sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 1.818
Kód RIV
RIV/00216224:14740/13:00069968
Organizační jednotka
Středoevropský technologický institut
Klíčová slova anglicky
Basal ganglia; Parkinson's disease; cerebellum; connectivity; cortical reorganization; motor timing; prediction; supplementary motor area
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 4. 4. 2014 10:52, Olga Křížová
Anotace
V originále
The cerebellum, basal ganglia (BG), and other cortical regions, such as supplementary motor area (SMA) have emerged as important structures dealing with various aspects of timing, yet the modulation of functional connectivity between them during motor timing tasks remains unexplored. METHODS: We used dynamic causal modeling to investigate the differences in effective connectivity (EC) between these regions and its modulation by behavioral outcome during a motor timing prediction task in a group of 16 patients with early Parkinson's disease (PD) and 17 healthy controls. Behavioral events (hits and errors) constituted the driving input connected to the cerebellum, and the modulation in connectivity was assessed relative to the hit condition (successful interception of target). RESULTS: The driving input elicited response in the target area, while modulatory input changed the specific connection strength. The neuroimaging data revealed similar structure of intrinsic connectivity in both groups with unidirectional connections from cerebellum to both sides of the BG, from BG to the SMA, and then from SMA to the cerebellum. However, the type of intrinsic connection was different between two groups. In the PD group, the connection between the SMA and cerebellum was inhibitory in comparison to the HC group, where the connection was activated. Furthermore, the modulation of connectivity by the performance in the task was different between the two groups, with decreased connectivity between the cerebellum and left BG and SMA and a more pronounced symmetry of these connections in controls. In the same time, there was an increased EC between the cerebellum and both sides of BG with more pronounced asymmetry (stronger connection with left BG) in patients. In addition, in the PD group the modulatory input strengthened inhibitory connectivity between the SMA and the cerebellum, while in the HC group the excitatory connection was slightly strengthened. CONCLUSIONS: Our findings indicate that although early PD subjects and controls use similar functional circuits to maintain a successful outcome in predictive motor timing behavior, the type and strength of EC and its modulation by behavioral performance differ between these two groups. These functional differences might represent the first step of cortical reorganization aimed at maintaining a normal performance in the brain affected by early Parkinson's disease and may have implications for the neuro-rehabilitation field.
Návaznosti
ED1.1.00/02.0068, projekt VaV |
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