The cerebellum and event timing

被引:374
作者
Ivry, RB
Spencer, RM
Zelaznik, HN
Diedrichsen, J
机构
[1] Univ Calif Berkeley, Dept Psychol, Berkeley, CA 94720 USA
[2] Purdue Univ, Dept Hlth & Kinesiol, Integrat Program Neurosci, W Lafayette, IN 47907 USA
[3] Vet Adm Med Ctr, Martinez, CA 94553 USA
来源
CREBELLUM: RECENT DEVELOPMENTS IN CEREBELLAR RESEARCH | 2002年 / 978卷
关键词
cerebellum; motor control; cognition; event timing; emergent timing;
D O I
10.1111/j.1749-6632.2002.tb07576.x
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Damage to the cerebellum disrupts performance on a range of tasks that require precise timing including the production of skilled movements, eyeblink conditioning, and perceptual tasks such as duration discrimination. We hypothesize that such tasks involve event timing, a form of representation in which the temporal goals are explicitly represented. For example, during finger tapping, the goal to produce evenly paced intervals invokes an explicit temporal representation of the time between successive contact points with the tapping surface. In contrast, timing can be an emergent property in other actions, reflecting temporal consistencies that arise through the control of other movement parameters. One example is continuous circle drawing, a task in which temporal consistency can be achieved by maintaining a constant angular velocity or minimizing higher-order derivatives (e.g., jerk). Temporal consistency on event and emergent timing tasks is not correlated and patients with cerebellar damage show no increase in temporal variability during continuous circle drawing. While the cerebellum likely contributes to performance of a wide range of skilled behaviors, it appears to be especially important when the tasks entail event timing.
引用
收藏
页码:302 / 317
页数:16
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