Cerebellar activation during discrete and not continuous timed movements: an fMRI study.

Cerebellar activation during discrete and not continuous timed movements: an fMRI study. Research Abstract Details 

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Cerebellar activation during discrete and not continuous timed movements: an fMRI study. Abstract Text:

Rebecca M C Spencer,Timothy Verstynen,Matthew Brett,Richard Ivry,

Individuals with cerebellar lesions are impaired in the timing of repetitive movements that involve the concatenation of discrete events such as tapping a finger. In contrast, these individuals perform comparably to controls when producing continuous repetitive movements. Based on this, we have proposed that the cerebellum plays a key role in event timing-the representation of the temporal relationship between salient events related to the movement (e.g., flexion onset or contact with a response surface). In the current study, we used fMRI to examine cerebellar activity during discrete and continuous rhythmic movements. Participants produced rhythmic movements with the index finger either making smooth, continuous transitions between flexion and extension or with a pause inserted before each flexion phase making the movement discrete. Lateral regions in lobule VI, ipsilateral to the moving hand were activated in a similar manner for both conditions. However, activation in the superior vermis was significantly greater when the movements were discrete compared to when the movements were continuous. This pattern was not evident in cortical regions within the field of view, including M1 and SMA. The results are consistent with the hypothesis that subregions of the cerebellum are selectively engaged during tasks involving event timing.

Cerebellar activation during discrete and not continuous timed movements: an fMRI study. Publishing Authors By Initials

RM Spencer,T Verstynen,M Brett,R Ivry,

For similar natural sciences: time: time factors research abstracts see: natural sciences: time: time factors research

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Cerebellar activation during discrete and not continuous timed movements: an fMRI study. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: NeuroImage

VOLUME: 36

Page Numbers: 378-87

Journal Abbreviation: Neuroimage

ISSN: 1053-8119

DAY: 23

MONTH: 03

YEAR: 2007

Cerebellar activation during discrete and not continuous timed movements: an fMRI study. Information

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LANGUAGE: eng

NlmUniqueID: 9215515

Cerebellar activation during discrete and not continuous timed movements: an fMRI study. Keywords Mesh Terms:

KEYWORDS: Time Factors

MESH TERMS: physiology

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Grant and Affiliation Information for Cerebellar activation during discrete and not continuous timed movements: an fMRI study.

AFFILIATION: Department of Psychology and Helen Wills Neuroscience Institute, University of California at Berkeley, Berkeley, CA 94720-1650, USA. rspencer@berkeley.edu

Country: United States

AGENCY: United States NINDS

GRANT: R01 NS030256-14

ACRONYM: NS

MEDLINETA: Neuroimage

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