2011
The Neural Substrate of Predictive Motor Timing in Spinocerebellar Ataxia
BAREŠ, Martin, Ovidiu V. LUNGU, Tao LIU, Tobias WAECHTER, Christopher M. GOMEZ et. al.Základní údaje
Originální název
The Neural Substrate of Predictive Motor Timing in Spinocerebellar Ataxia
Autoři
BAREŠ, Martin (203 Česká republika, garant, domácí), Ovidiu V. LUNGU (840 Spojené státy), Tao LIU (840 Spojené státy), Tobias WAECHTER (840 Spojené státy), Christopher M. GOMEZ (840 Spojené státy) a James ASHE (840 Spojené státy)
Vydání
Cerebellum, 2011, 1473-4222
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
Impakt faktor
Impact factor: 3.207
Kód RIV
RIV/00216224:14110/11:00053159
Organizační jednotka
Lékařská fakulta
UT WoS
000291601100008
Klíčová slova anglicky
Cerebellum; Basal ganglia; Motor timing; Functional imaging
Příznaky
Mezinárodní význam
Změněno: 12. 4. 2012 07:27, Mgr. Michal Petr
Anotace
V originále
The neural mechanisms involved in motor timing are subcortical, involving mainly cerebellum and basal ganglia. However, the role played by these structures in predictive motor timing is not well understood. Unlike motor timing, which is often tested using rhythm production tasks, predictive motor timing requires visuo-motor coordination in anticipation of a future event, and it is evident in behaviors such as catching a ball or shooting a moving target. We examined the role of the cerebellum and striatum in predictive motor timing in a target interception task in healthy (n = 12) individuals and in subjects (n = 9) with spinocerebellar ataxia types 6 and 8. The performance of the healthy subjects was better than that of the spinocerebellar ataxia. Successful performance in both groups was associated with increased activity in the cerebellum (right dentate nucleus, left uvula (lobule V), and lobule VI), thalamus, and in several cortical areas. The superior performance in the controls was related to activation in thalamus, putamen (lentiform nucleus) and cerebellum (right dentate nucleus and culmen-lobule IV), which were not activated either in the spinocerebellar subjects or within a subgroup of controls who performed poorly. Both the cerebellum and the basal ganglia are necessary for the predictive motor timing. The degeneration of the cerebellum associated with spinocerebellar types 6 and 8 appears to lead to quantitative rather than qualitative deficits in temporal processing. The lack of any areas with greater activity in the spinocerebellar group than in controls suggests that limited functional reorganization occurs in this condition.
Návaznosti
MSM0021622404, záměr |
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