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Related Experiment Videos

Effect of cognitive load on postural control.

Gerhard Andersson1, Jenni Hagman, Roya Talianzadeh

  • 1Department of Psychology, Uppsala University, Uppsala, Sweden. gerhard.andersson@psyk.uu.se

Brain Research Bulletin
|July 18, 2002
PubMed
Summary

Cognitive tasks, like silent backward counting, influence body sway. Focused attention on balance can reduce this effect, indicating a link between posture control and cognitive function.

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Area of Science:

  • Neuroscience
  • Human Physiology
  • Cognitive Psychology

Background:

  • The relationship between cognitive load and motor control, specifically postural stability, is an area of ongoing research.
  • Understanding how mental tasks affect balance is crucial for fields ranging from rehabilitation to human-computer interaction.

Purpose of the Study:

  • To investigate the impact of a cognitive task (silent backward counting) on postural sway.
  • To examine how cognitive task performance is affected by postural demands and focused attention on balance.

Main Methods:

  • Two experiments were conducted with healthy subjects using a dual-task design.
  • Experiment 1 involved measuring postural sway and cognitive task performance with and without mental tasks and calf stimulation.
  • Experiment 2 assessed postural sway and cognitive task performance with focused attention on balance.

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Main Results:

  • Cognitive task performance decreased when balance was perturbed in Experiment 1.
  • The mental task generally reduced body sway.
  • Focused attention on balance attenuated the effect of the mental task on body sway.

Conclusions:

  • Cognitive functioning and the control of body sway are interconnected.
  • The degree of this relationship may be modulated by attentional focus and task demands.