Decreasing Internal Focus of Attention Improves Postural Control During Quiet Standing in Young Healthy Adults

Nafati, Gilel

doi:10.5641/027013611x13275192111628

Cited by 4 publications

(4 citation statements)

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“…Supra-spinal control, most probably affected by attention, may in addition add feedforward deterministic variation of the CoP, i.e., the planned state need not be static (Zatsiorsky & Duarte, 2000), which could serve an exploratory role (Carpenter, Murnaghan, & Inglis, 2010). There is evidence that conscious control over a task increases postural sway (Andersson, Hagman, Talianzadeh, Svedberg, & Larsen, 2002;Nafati & Vuillerme, 2011) and that withdrawing attention from the postural task leads to a decrease in postural sway (Andersson et al, 2002;Nafati & Vuillerme, 2011;Riley, Baker, & Schmit, 2003). The contribution of the three controls mechanisms affects the character of the postural sway pattern.…”

Section: Discussionmentioning

confidence: 99%

Postural sway and integration of proprioceptive signals in subjects with LBP

Kiers

Dieën

Brumagne

et al. 2015

Human Movement Science

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Patients with non-specific low back pain (LBP) may use postural control strategies that differ from healthy subjects. To study these possible differences, we measured the amount and structure of postural sway, and the response to muscle vibration in a working cohort of 215 subjects. Subjects were standing on a force plate in bipedal stance. In the first trial the eyes were open, no perturbation applied. In the following 6 trials, vision was occluded and subjects stood under various conditions of vibration/no vibration of the lumbar spine or m. Triceps Surae (TSM) on firm surface and on foam surface. We performed a factor analysis to reduce the large amount of variables that are available to quantify all effects. Subjects with LBP showed the same amount of sway as subjects without LBP, but the structure of their sway pattern was less regular with higher frequency content. Subjects with LBP also showed a smaller response to TSM vibration, and a slower balance recovery after cessation of vibration when standing on a solid surface. There was a weak but significant association between smaller responses to TSM vibration and an irregular, high frequency sway pattern, independent from LBP. A model for control of postural sway is proposed. This model suggests that subjects with LBP use more co-contraction and less cognitive control, to maintain a standing balance when compared to subjects without LBP. In addition, a reduced weighting of proprioceptive signals in subjects with LBP is suggested as an explanation for the findings in this study.

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Section: Discussionmentioning

confidence: 99%

Postural sway and integration of proprioceptive signals in subjects with LBP

Kiers

Dieën

Brumagne

et al. 2015

Human Movement Science

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“…For example, if focus is conceived of in terms of the endogenous commitment of attentional resources to the task versus other thoughts (e.g., mind wandering; Risko, Anderson, Sarwal, Engelhardt, & Kingstone, 2012), then the mention of being focused or unfocused could bias that allocation. The idea that instructions can bias the allocation of attentional focus has support in the literature (e.g., McNevin & Wulf, 2002;Nafati & Vuillerme, 2011;Wulf & Prinz, 2001). For example, instructions can prime an external versus internal locus of attention, which has been demonstrated to influence performance in various tasks (e.g., Wulf & Prinz, 2001).…”

Section: Discussionmentioning

confidence: 98%

The embodiment of focus: Investigating the impact of leaning behavior on our cognitive state and other's perception of our cognitive state.

Chisholm

Risko²,

Kingstone³

2013

Journal of Experimental Psychology: Human Perception and Perfor

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The emerging literature on embodied cognition highlights the role that the body plays in cognitive and affective processes. We investigated whether different body postures, specifically leaning postures thought to reflect different states of cognitive focus, can impact cognitive focus and task performance. In three experiments we confirmed that different postures are perceived reliably by others to convey distinct and different states of cognitive focus. However, the individuals who actually adopted the postures did not experience any subjective change in cognitive focus nor demonstrate any influence of leaning posture on performance across a range of tasks that varied in their naturalness and complexity. Only by instructing participants to adopt a posture associated with a focused or unfocused cognitive state did an association between performance and posture emerge. These data indicate that changes in one's body do not necessarily yield a reliable change in one's cognitive state, even when (a) those changes in body are reliably perceived by others as inducing a change in cognitive state, and (b) changes in cognitive state lead to robust changes in the body. In light of these findings, we propose two related accounts that point to leaning behavior as being the result of one's increasing need to focus. Thus, rather than influencing cognitive state, leaning behavior may instead reflect the embodiment of one's cognitive state of focus.

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“…Previous studies also report better posture control when attention focus is removed from internal focus during quiet stance and sports activities. 17,18) A recent study showed that prioritizing attention to a RT task and away from the posture control actually improved postural stability. 16) Jehu, et al 16) concluded that when the secondary RT task was complex and required more attentional demand, the subjects may have adapted stiffening strategy that resulted in better posture control.…”

Section: Discussionmentioning

confidence: 99%