The coupling between point-of-gaze and ballmovements in three-ball cascade juggling: the effects of expertise, pattern and tempo

Huys, Raoul; Beek, Peter J.

doi:10.1080/026404102317284745

Cited by 59 publications

(64 citation statements)

References 24 publications

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“…Indications of such perceptual sensitivity and flexibility have been hinted at in previous research. For instance, whereas evidence suggests that in three-ball cascade juggling, the zenith of the ball trajectories is the most informative part of the trajectory for sustaining juggling, other portions of the trajectories are sufficiently informative to enable effective performance (Huys & Beek, 2002;Huys et al, 2004;van Santvoord & Beek, 1994). Also, people are able to detect small differences in trajectory forms of oscillators, including asymmetry and symmetrical peakening or flattening-changes that may be indicative of biological movement (Muchisky & Bingham, 2002).…”

Section: Apparatus and Stimulimentioning

confidence: 99%

On the dynamic information underlying visual anticipation skill

Huys

Smeeton

Hodges

et al. 2008

Perception & Psychophysics

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118

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Section: Apparatus and Stimulimentioning

confidence: 99%

On the dynamic information underlying visual anticipation skill

Huys

Smeeton

Hodges

et al. 2008

Perception & Psychophysics

Self Cite

118

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“…1, C m (r) scales with r m ) acquisition (cf. Huys and Beek 2002;Harbourne and Stergiou 2003;Huys et al 2003Huys et al , 2004Milton et al 2004). In line with this interpretation, the introduction of a cognitive dual task reduced the cognitive contribution to postural control, resulting in less regular COP trajectories of larger dimension but similar stability.…”

Section: Significance Of Studying Postural Sway Dynamicsmentioning

confidence: 99%

Dynamical structure of center-of-pressure trajectories in patients recovering from stroke

et al. 2006

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In a recent study, De Haart et al. (Arch Phys Med Rehabil 85:886-895, 2004) investigated the recovery of balance in stroke patients using traditional analyses of center-of-pressure (COP) trajectories to assess the effects of health status, rehabilitation, and task conditions like standing with eyes open or closed and standing while performing a cognitive dual task. To unravel the underlying control processes, we reanalyzed these data in terms of stochastic dynamics using more advanced analyses. Dimensionality, local stability, regularity, and scaling behavior of COP trajectories were determined and compared with shuffled and phase-randomized surrogate data. The presence of long-range correlations discarded the possibility that the COP trajectories were purely random. Compared to the healthy controls, the COP trajectories of the stroke patients were characterized by increased dimensionality and instability, but greater regularity in the frontal plane. These findings were taken to imply that the stroke patients actively (i.e., cognitively) coped with the stroke-induced impairment of posture, as reflected in the increased regularity and decreased local stability, by recruiting additional control processes (i.e., more degrees of freedom) and/or by tightening the present control structure while releasing non-essential degrees of freedom from postural control. In the course of rehabilitation, dimensionality stayed fairly constant, whereas local stability increased and regularity decreased. The progressively less regular COP trajectories were interpreted to indicate a reduction of cognitive involvement in postural control as recovery from stroke progressed. Consistent with this interpretation, the dual task condition resulted in less regular COP trajectories of greater dimensionality, reflecting a task-related decrease of active, cognitive contributions to postural control. In comparison with conventional posturography, our results show a clear surplus value of dynamical measures in studying postural control.

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“…in a complex rhythmic task. These features were mainly studied with the cascade juggling pattern (Beek and Turvey, 1992;Beek and van Santvoord, 1992;van Santvoord and Beek, 1996;Post et al, 2000;Huys and Beek, 2002). (Sternad, 1999) proposed a comparison between human juggling and a 1D impact dynamical process amenable to mathematical analysis, i.e.…”

Section: Introductionmentioning

confidence: 99%

Open-Loop stabilization of 2d impact juggling

Ronsse

Lefèvre

Sepulchre

2004

IFAC Proceedings Volumes

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The paper studies the properties of a sinusoidally vibrating wedge billiard as a model for 2D impact juggling. It is shown that some periodic orbits that are unstable in the elastic fixed wedge become exponentially stable in the (non-)elastic vibrating wedge. These orbits are linked with some classical juggling patterns, providing an interesting benchmark for the study of the frequency-locking properties in human rhythmic tasks.

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The coupling between point-of-gaze and ballmovements in three-ball cascade juggling: the effects of expertise, pattern and tempo

Cited by 59 publications

References 24 publications

On the dynamic information underlying visual anticipation skill

On the dynamic information underlying visual anticipation skill

Dynamical structure of center-of-pressure trajectories in patients recovering from stroke

Open-Loop stabilization of 2d impact juggling

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