Anticipatory postural adjustments modify the movement-related potentials of upper extremity voluntary movement.

Anticipatory postural adjustments modify the movement-related potentials of upper extremity voluntary movement. Research Abstract Details 

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Anticipatory postural adjustments modify the movement-related potentials of upper extremity voluntary movement. Abstract Text:

S Yoshida,K Nakazawa,E Shimizu,I Shimoyama,S Yoshida,K Nakazawa,E Shimizu,I Shimoyama,

To elucidate the effect on movement-related potentials (MRPs) of anticipatory postural adjustments (APAs) accompanied by voluntary focal movement, we examined the MRPs of shoulder flexion movement under standing and sitting postural conditions in 12 normal subjects. MRPs were evaluated based on three components: readiness potential (RP), motor potential (MP), and movement-monitoring potential. APAs were observed in the activities of postural muscles including the biceps femoris and erector spinae muscles only under standing conditions. The amplitudes of the three MRP components were larger under standing conditions than under sitting conditions for all recorded electrode positions, and the RP and MP amplitudes at the vertex position, which lies over the supplementary motor area (SMA), showed a prominent increase under standing conditions with the highest statistical significance. These results suggest that a recruited neural process of the cortical area including the SMA may be necessary to generate voluntary movement accompanied by APA.

Anticipatory postural adjustments modify the movement-related potentials of upper extremity voluntary movement. Publishing Authors By Initials

S Yoshida,K Nakazawa,E Shimizu,I Shimoyama,S Yoshida,K Nakazawa,E Shimizu,I Shimoyama,

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Anticipatory postural adjustments modify the movement-related potentials of upper extremity voluntary movement. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Gait & posture

VOLUME: 27

Page Numbers: 97-102

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ISSN: 0966-6362

DAY: 3

MONTH: 04

YEAR: 2007

Anticipatory postural adjustments modify the movement-related potentials of upper extremity voluntary movement. Information

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LANGUAGE: eng

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AFFILIATION: Department of Integrative Neurophysiology, Graduate School of Medicine, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan.

Country: Netherlands

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MEDLINETA: Gait Posture

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