Ipsilateral wrist–ankle movements in the sagittal plane encoded in extrinsic reference frame

Muraoka, Tetsuro; Ishida, Yuki; Obu, Takashi; Crawshaw, Larry I.; Kanosue, Kazuyuki

doi:10.1016/j.neures.2013.02.007

Cited by 10 publications

(15 citation statements)

References 24 publications

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“…It has been shown that bimanual coordination of index finger flexionextension is predominantly constrained based on motoric relative phase (Riek et al 1992) and that other coordinated movements of two limbs are predominantly constrained based on spatial relative phase (Baldissera et al 1982;Carson et al 1995;Mechsner et al 2001;Li et al 2004;Salesse et al 2005;Muraoka et al 2013). However, the present study showed that intra-person coordination between toes and fingers was constrained based on both motoric and spatial relative phases independently, which did not agree with previous studies.…”

Section: Intra-personal Coordination Of Fingers and Toescontrasting

confidence: 96%

Intra- and Inter-person Coordinated Movements of Fingers and Toes

2015

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When performing intra-or inter-person coordination of cyclical movements of two joints, there is a perceptual-cognitive constraint based on spatial information for performing such coordination. However, bimanual coordination of the index finger flexion-extension is an exception in which the constraint occurs based on motoric information, which might be peculiar to digits. In order to investigate whether intra-and inter-person coordination of fingers and toes were constrained based on spatial or motoric information, coordinated movements were performed in one of two modes, flexing fingers concomitant with either toe flexion or toe extension, with the forearm either in the pronated or supinated position. In intra-person coordination, both the relative direction of movement and activation coupling influenced the stability of coordination to a similar extent. In inter-person coordination, the coordination with alternate activation of the corresponding muscles of fingers and toes in the opposite direction was less stable as compared to other coordination modes. These findings suggest that both spatial and motoric information are utilized in intra-person coordination of the fingers and toes, whereas either spatial or motoric information is utilized in inter-person coordination to meet a specific requirement for each task.

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Section: Intra-personal Coordination Of Fingers and Toescontrasting

confidence: 96%

Intra- and Inter-person Coordinated Movements of Fingers and Toes

2015

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“…; Muraoka et al. ). With an increase in movement frequency, opposite directional movements tend to shift to same directional movements.…”

Section: Introductionmentioning

confidence: 96%

“…Specific constraints characterized the different multi-limb coordinations (Swinnen 2002). For example, when subjects try to move the ipsilateral hand and foot in the sagittal plane, opposite directional movements are more variable, and incorrect responses occur more frequently than with same directional movements (directional constraint) (Baldissera et al 1982;Carson et al 1995;Muraoka et al 2013). With an increase in movement frequency, opposite directional movements tend to shift to same directional movements.…”

Section: Introductionmentioning

confidence: 99%

Potential explanation of limb combination performance differences for two-limb coordination tasks

2015

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Rhythmic two-limb coordinated movements in the sagittal plane are variable and inaccurate when the movements are in the opposite direction as compared with those in the same direction (directional constraint). The magnitude of directional constraint depends on the particular limb combination. It is prominent in ipsilateral hand-foot coordination, but minimal in bimanual hand coordination. The reason for such differences remains unclear. In this study, we investigated the possible mechanisms underlying the production of the difference that depend on limb combination. Subjects performed two-limb rhythmic coordinated movements either in the same or in the opposite direction for three separate limb combinations (bilateral hands, contralateral hand and foot, and ipsilateral hand and foot). For each combination two different tasks were performed. In the first condition, subjects actively moved two limbs (active condition). Second, subjects actively moved one limb in coordination with a passively moved limb (passive condition). In the active condition, the directional constraint was dependent upon the limb combination, as reported in previous studies; the directional constraint was quite prominent in ipsilateral combinations, intermediate in contralateral combinations, and minimal for bilateral combination. However, differences in the directional constraint did not depend on limb combination for any combination in the passive conditions which apparently utilized closed-loop control. In other word, the difference depending on limb combination disappeared when control strategies become uniformly closed-loop. Thus, we speculate that the control strategy utilized depends on limb combination in the active condition. Additionally, different mechanisms other than closed-loop control also would have influence depending on the particular limb combination. This may result in differences in performance depending upon the limb combination.

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“…; Muraoka et al. ). Although the above mentioned directional constraints of multilimb movements are well recognized, the underlying mechanisms, especially those involved with ipsilateral limb coordination, are not well understood.…”

Section: Introductionmentioning

confidence: 96%

“…Additionally, while the control of bimanual coordination in the horizontal plane is accomplished with an intrinsic reference frame (Swinnen ), the control of ipsilateral limbs in the sagittal plane is accomplished by utilizing an extrinsic reference frame (Muraoka et al. ). It thus seems likely, that different neural mechanisms underlie bimanual coordination and ipsilateral limb coordination.…”

Section: Introductionmentioning

confidence: 99%

Factors that determine directional constraint in ipsilateral hand-foot coordinated movements

2013

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In performing simultaneous rhythmic movements of the ipsilateral hand and foot, there are differences in the level of stability between same directional (stable) and opposite directional (unstable) movements. This is the directional constraint. In this study, we investigated three factors (“interaction in efferent process,” “interaction of afferent signals,” and “error correction”) proposed to underlie for the directional constraint. We compared the performance of three tasks: (1) coordination of actively moved ipsilateral hand and foot, (2) active hand movement in coordination with passively moved foot, (3) active hand movement not coordinated with a passively moved foot. In each task, both same and opposite directional movements were executed. There was no difference between performance estimated with success rate for the first and second task. The directional constraint appeared in both tasks. Thus, the interaction in efferent processes, which was shown to be responsible for the directional constraint in bimanual coordination, was not involved with the directional constraint of ipsilateral hand–foot coordination. The directional constraint did not appear in the third task, which suggested that “interaction of afferent signals” also had no contribution. These results indicated that “error correction” must be the most critical of these factors for mediating the directional constraint in ipsilateral hand–foot coordinated movements.

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Ipsilateral wrist–ankle movements in the sagittal plane encoded in extrinsic reference frame

Cited by 10 publications

References 24 publications

Intra- and Inter-person Coordinated Movements of Fingers and Toes

Intra- and Inter-person Coordinated Movements of Fingers and Toes

Potential explanation of limb combination performance differences for two-limb coordination tasks

Factors that determine directional constraint in ipsilateral hand-foot coordinated movements

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