Limb-Segment Selection in Drawing Behaviour

Meulenbroek, Ruud G. J.; Rosenbaum, David A.; Thomassen, Arnold J.W.M.; Schomaker, Lambert

doi:10.1080/14640749308401047

Cited by 34 publications

(28 citation statements)

References 12 publications

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“…It could be that the method used to assess differences in timing of the joint motions was not particularly sensitive to timing differences, or perhaps the cyclic nature of the task may result in different coordination strategies that result in more simultaneous motions at the two joints. Previous research indicates that movement joint coupling is effected by whether a movement task is discrete or cyclic (Meulenbroek et al, 1993;Schillings et al, 1996).…”

Section: Timing Of Spine and Hip Jointsmentioning

confidence: 99%

“…However, there are two potential limitations to these studies. First, cross-correlation analyses may not be particularly sensitive to timing differences in co-varying waveforms, and second, joint coupling is effected by whether a movement task is discrete or cyclic (Meulenbroek et al, 1993;Schillings et al, 1996). Therefore, the timing of the spine and hip needs to be assessed explicitly in subjects performing discrete movement tasks.…”

Section: Introductionmentioning

confidence: 99%

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Coordination and timing of spine and hip joints during full body reaching tasks

Thomas

Gibson

2007

Human Movement Science

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Coupling of spine and hip joints during full body reaching tasks was investigated in sixteen participants (8 male & 8 female) who performed reaching tasks at comfortable and fast-paced movement speeds to three targets located in a para-sagittal plane. The participants paused at target contact for 500 ms and then returned to an upright posture. Three dimensional joint motions of the spine and hip were recorded using an electromagnetic tracking device. We found an effect of movement phase (i.e. reach and return) on the onset timing of the spine and hip joints. For most target locations and movement speeds, spine motion onset preceded hip motion onset during the reaching phase of the movement task. In the reach phase, when averaged across all movement conditions, spine joint motion preceded hip joint motion by an average of 48.9 ms. In contrast, in the return phase, hip joint motion preceded spine joint motion by an average of 63.0 ms. Additionally, when subjects were instructed to use either a knee flexion or knee extension strategy to perform the reaching tasks there was no effect of movement strategy on timing of the spine and hip. There was also no effect of target height on the spine hip ratio, but as movement speed increased, the spine/hip ratio decreased for all target locations due primarily to an increase in hip joint excursion. The findings indicate clear differences in onset timing of the spine and hip joints during reaching tasks that necessitate some forward bending of the trunk and that onset timing is reversed for the return to an upright posture.

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Section: Timing Of Spine and Hip Jointsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coordination and timing of spine and hip joints during full body reaching tasks

Thomas

Gibson

2007

Human Movement Science

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“…The hypothesis of Meulenbroek et al (1993) concerning a similar relation between the amplitude of the end-effector displacement and the involvement of limb segments should also be applicable in the case of discrete movements. In discrete movements, it is not immediately clear how optimal amplitudes are related to optimal frequencies (Kay, Kelso, Saltzman, & Schoner, 1987;Rosenbaum et al.…”

Section: Efficiency Constraints On Limb Segment Selectionmentioning

confidence: 99%

“…First, the findings by Meulenbroek et al (1993) concerning the effects of direction, distance, and speed of end-effector displacement on limb segment involvement in cyclic drawing movements were compared with those obtained in a discrete drawing task. Our primary aim was to find out whether the efficiency constraints that were proposed in that study apply only to cyclical movements or to discrete ones as well.…”

mentioning

confidence: 99%

“…We analyzed joint angular velocities, from elbow to index finger, to investigate both involvement of fingers, hand, and arm and timing aspects of their recruitment. Meulenbroek et al (1993) suggested that selection of limb segment patterns during cyclic drawing depends, among other things, upon optimal frequencies and amplitudes of motion of the effector segments that can contribute to the execution of the task. In their study, subjects performed back-and-forth movements of gradually increasing or decreasing size.…”

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confidence: 99%

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Limb Segment Recruitment as a Function of Movement Direction, Amplitude, and Speed

Schillings

Meulenbroek

Thomassen

1996

Journal of Motor Behavior

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ABSTRACT. Coordination of limb segments in graphic motor behavior has been studied primarily in cyclic tasks. In the present study, limb segment recruitment patterns were investigated in a discrete line-drawing task. Subjects ( N = 11) performed pointing movements varying in direction, amplitude, and speed. The contributions of index finger, hand, and arm to the movement were analyzed by evaluating the angular displacements in 7 joint dimensions. The results showed that amplitude and direction affected limb segment involvement in the same way they have been reported to affect it in cyclic movements. Upward left-(upleft) directed movements were primarily achieved by fingers and arm, whereas upward right-(up-right) directed movements were accomplished with the hand and the arm. Large amplitudes elicited not only an increase of proximal but also a decrease of distal limb segment involvement, especially in the upleft direction. In the present discrete pointing task, effects of speed on limb segment involvement were different from speed effects that were observed earlier in cyclic tasks: Larger limb segments became more involved in fast than in slow discrete movements. With respect to the timing of limb segment recruitment, all joints tended to move simultaneously, but small deviations from synchronous joint movement onset and offset were present. The results are discussed in the context of recent theories of limb segment coordination.

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