Influence of stimulus amplitude on unintended visuomotor entrainment

Varlet, Manuel; Coey, Charles A.; Schmidt, R. C.; Richardson, Michael J.

doi:10.1016/j.humov.2011.08.002

Cited by 34 publications

(30 citation statements)

References 32 publications

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“…Generally, these results corroborate previous research which showed that intended and unintended rhythmic visuomotor coordination can be understood as constrained by the dynamical entrainment processes of coupled oscillators, and further demonstrate the necessity to focus on the components' properties to better understand coordination dynamics (Lopresti-Goodman et al, 2008;Peper & Beek, 1998;Roerdink et al, 2008;Schmidt et al, 2011;Varlet et al, 2012a;Wimmers et al, 1992). Consistent with our expectations, the results of these two experiments demonstrated that the dynamics of both intended and unintended visuomotor coordination are modulated by the velocity profile of the observed environmental rhythms.…”

Section: Discussionsupporting

confidence: 91%

“…Accordingly, unintended coordination is more likely to be affected by certain experimental manipulations, such as stimulus period and visual attention, than is intended coordination Schmidt, Richardson, Arsenault, & Galantucci, 2007). Of particular note, previous research has also shown that manipulations of stimulus amplitude only influences the stability of unintended coordination (de Rugy et al, 2008;Peper & Beek, 1998;Varlet et al, 2012a). Therefore, we designed Experiment 2 to examine the influence of the velocity profile of visual rhythms on unintended visuomotor coordination.…”

Section: Discussionmentioning

confidence: 99%

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Influence of stimulus velocity profile on rhythmic visuomotor coordination.

Varlet¹,

Coey²,

Schmidt³

et al. 2014

Journal of Experimental Psychology: Human Perception and Perfor

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Every day, we visually coordinate our movements with environmental rhythms. Despite its ubiquity, it largely remains unclear why certain visual rhythms or stimuli facilitate such visuomotor coordination. The goal of the current study was to investigate whether the velocity profile of a rhythmic stimulus modulated the emergence and stability of this coordination. We examined both intended (Experiment 1) and unintended or spontaneous coordination (Experiment 2) between the rhythmic limb movements of participants and stimuli exhibiting different velocity profiles. Specifically, the stimuli oscillated with either a sinusoidal (harmonic), nonlinear Rayleigh, or nonlinear Van der Pol velocity profile, all of which are typical of human or biological rhythmic movement. The results demonstrated that the dynamics of both intended and unintended visuomotor coordination were modulated by the stimulus velocity profile, and that the Rayleigh velocity profile facilitated the coordination, suggesting a crucial role of the slowness to the endpoints or turning points of the stimulus trajectory for stable coordination. More generally, these findings open promising research directions to better understand and improve coordination with artificial agents and people with social deficits.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Influence of stimulus velocity profile on rhythmic visuomotor coordination.

Varlet¹,

Coey²,

Schmidt³

et al. 2014

Journal of Experimental Psychology: Human Perception and Perfor

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“…Although these results have been replicated in other studies (Romero et al, 2012; Varlet et al, 2012a), the origin of this constructive eye-tacking effect on spontaneous visuomotor entrainment is still an open question. Specifically, why does tracking a stimulus movement with the eyes increase the occurrence of spontaneous visuomotor entrainment?…”

Section: Introductionmentioning

confidence: 58%

“…Of particular relevance for the current study is that such dynamical entrainment processes have not only been found between the limb movements of a single individual (i.e., intrapersonal coordination), but also between the limb movements of an individual and external visual rhythms, including the rhythmic movements produced by other people (i.e., interpersonal coordination) (Issartel, Marin, & Cadopi, 2007; Lopresti-Goodman, Richardson, Silva, & Schmidt, 2008; Peper & Beek, 1998; Schmidt & O'Brien, 2007; Tognoli et al, 2007; van Ulzen et al, 2008; Varlet et al, 2012a; Wimmers et al, 1992). That is, when an individual is visually coupled to a stimulus movement or rhythm, the movements of the individual can become spontaneously synchronized toward an in-phase or anti-phase pattern of coordination.…”

Section: Introductionmentioning

confidence: 82%

“…More specifically, previous research has shown that the stability of the coordination depends on whether the actor visually tracked stimulus displacements with eye movements (Romero et al, 2012; Schmidt et al, 2007; Varlet et al, 2012a). Schmidt et al (2007) investigated the spontaneous entrainment between the pendulum swinging of participants and a visual stimulus that oscillated horizontally on a projection screen.…”

Section: Introductionmentioning

confidence: 99%

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Informational constraints on spontaneous visuomotor entrainment

Varlet

Bucci

Richardson

et al. 2015

Human Movement Science

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Past research has revealed that an individual's rhythmic limb movements become spontaneously entrained to an environmental rhythm if visual information about the rhythm is available and its frequency is near that of the individual's movements. Research has also demonstrated that if the eyes track an environmental stimulus, the spontaneous entrainment to the rhythm is strengthened. One hypothesis explaining this enhancement of spontaneous entrainment is that the limb movements and eye movements are linked through a neuromuscular coupling or synergy. Another is that eye-tracking facilitates the pick up of important coordinating information. Experiment 1 investigated the first hypothesis by evaluating whether any rhythmic movement of the eyes would facilitate spontaneous entrainment. Experiment 2 and 3 (respectively) explored whether eye-tracking strengthens spontaneous entrainment by allowing the pickup of trajectory direction change information or allowing an increase in the amount of information to be picked-up. Results suggest that the eye-tracking enhancement of spontaneous entrainment is a consequence of increasing the amount of information available to be picked-up.

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Influence of stimulus velocity profile on unintentional visuomotor entrainment depends on eye movements

2017

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Humans spontaneously entrain their movements to visual rhythms in the environment. Previous research has shown that the strength of such unintentional visuomotor entrainment is enhanced when observing rhythms characterized by the nonlinear, Rayleigh kinematics typical of human movements; such movements are characterized by greater slowness towards the trajectory turning points compared to sinusoidal movements. However, the enhanced unintentional entrainment to rhythms exhibiting Rayleigh kinematics has only been shown to occur when participants tracked stimulus movements with their eyes, which might have facilitated access to important information for enhanced entrainment. The current study compared the strength of unintentional visuomotor entrainment with both Rayleigh and sinusoidal kinematics when participants were either tracking (eye following the oscillating stimulus) or non-tracking (eye fixed at the centre of the stimulus trajectory) stimulus movements. The results showed that enhanced unintentional entrainment with Rayleigh stimuli only occurred with eye-tracking, supporting that slowness of rhythmic movements towards turning points facilitate entrainment and that access to this information depends on eye movements.

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Influence of stimulus amplitude on unintended visuomotor entrainment

Cited by 34 publications

References 32 publications

Influence of stimulus velocity profile on rhythmic visuomotor coordination.

Influence of stimulus velocity profile on rhythmic visuomotor coordination.

Informational constraints on spontaneous visuomotor entrainment

Influence of stimulus velocity profile on unintentional visuomotor entrainment depends on eye movements

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