Functional Imaging of the Cerebellum and Basal Ganglia During Predictive Motor Timing in Early Parkinson's Disease

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Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Lékařskou fakultu. Oficiální stránka publikace je na webu muni.cz.
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ČECHOVÁ Ivica LUNGU Ovidiu V MAREČEK Radek MIKL Michal GESCHEIDT Tomáš KRUPA Petr BAREŠ Martin

Rok publikování 2014
Druh Článek v odborném periodiku
Časopis / Zdroj Journal of Neuroimaging
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
Doi http://dx.doi.org/10.1111/j.1552-6569.2011.00663.x
Obor Neurologie, neurochirurgie, neurovědy
Klíčová slova Basal ganglia; cerebellum; fMRI; Parkinson's disease; prediction; timing
Přiložené soubory
Popis BACKGROUND AND PURPOSEThe basal ganglia and the cerebellum have both emerged as important structures involved in the processing of temporal information. METHODSWe examined the roles of the cerebellum and striatum in predictive motor timing during a target interception task in healthy individuals (HC group; n = 21) and in patients with early Parkinson's disease (early stage PD group; n = 20) using functional magnetic resonance imaging. RESULTSDespite having similar hit ratios, the PD failed more often than the HC to postpone their actions until the right moment and to adapt their behavior from one trial to the next. We found more activation in the right cerebellar lobule VI in HC than in early stage PD during successful trials. Successful trial-by-trial adjustments were associated with higher activity in the right putamen and lobule VI of the cerebellum in HC. CONCLUSIONSWe conclude that both the cerebellum and striatum are involved in predictive motor timing tasks. The cerebellar activity is associated exclusively with the postponement of action until the right moment, whereas both the cerebellum and striatum are needed for successful adaptation of motor actions from one trial to the next. We found a general hypoactivation'' of basal ganglia and cerebellum in early stage PD relative to HC, indicating that even in early stages of the PD there could be functional perturbations in the motor system beyond striatum.
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