The temporal representation of in-phase and anti-phase movements.

The temporal representation of in-phase and anti-phase movements. Research Abstract Details 

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The temporal representation of in-phase and anti-phase movements. Abstract Text:

Rebecca M C Spencer,Richard B Ivry,

We have proposed that the stability of bimanual coordination is influenced by the complexity of the representation of the task goals. Here, we present two experiments to explore this hypothesis. First, we examined whether a temporal event structure is present in continuous movements by having participants vocalize while producing bimanual circling movements. Participants tended to vocalize once per movement cycle when moving in-phase. In contrast, vocalizations were not synchronized with anti-phase movements. While the in-phase result is unexpected, the latter would suggest anti-phase continuous movements lack an event structure. Second, we examined the event structure of movements marked by salient turn-around points. Participants made bimanual wrist flexion movements and were instructed to move 'in synchrony' with a metronome, without specifying how they should couple the movements to the metronome. During in-phase movements, participants synchronized one hand cycle with every metronome beat; during anti-phase movements, participants synchronized flexion of one hand with one metronome beat and extension of the other hand with the next beat. The results are consistent with the hypothesis that the instability of anti-phase movements is related to their more complex (or absent) event representation relative to that associated with in-phase movements.

The temporal representation of in-phase and anti-phase movements. Publishing Authors By Initials

RM Spencer,RB Ivry,

For similar body regions: extremities: upper extremity research abstracts see: body regions: extremities: upper extremity research

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The temporal representation of in-phase and anti-phase movements. Journal Published:

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

Journal: Human movement science

VOLUME: 26

Page Numbers: 226-34

Journal Abbreviation:

ISSN: 0167-9457

DAY: 6

MONTH: 03

YEAR: 2007

The temporal representation of in-phase and anti-phase movements. Information

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LANGUAGE: eng

NlmUniqueID: 8300127

The temporal representation of in-phase and anti-phase movements. Keywords Mesh Terms:

KEYWORDS: Upper Extremity

MESH TERMS: physiology

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Grant and Affiliation Information for The temporal representation of in-phase and anti-phase movements.

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

Country: Netherlands

AGENCY: United States NINDS

GRANT: R01 NS030256-10A1

ACRONYM: NS

MEDLINETA: Hum Mov Sci

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