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Related Experiment Videos

Selective utilization of spatial working memory resources during stance posture.

Timothy J VanderVelde1, Marjorie H Woollacott, Anne Shumway-Cook

  • 1Department of Human Physiology, University of Oregon, Eugene, OR 97403, USA. timv@uoneuro.uoregon.edu

Neuroreport
|April 29, 2005
PubMed
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Visual imagery tasks disrupt balance control, but the neural basis is unknown. This study found that spatial working memory, not object working memory, interferes with stance postural control in healthy adults.

Area of Science:

  • Neuroscience
  • Human motor control
  • Cognitive psychology

Background:

  • Visual imagery tasks are known to interfere with balance control.
  • The specific neural mechanisms driving this interference remain unclear.
  • Understanding these mechanisms is crucial for explaining cognitive-motor interactions.

Purpose of the Study:

  • To investigate the role of visual working memory in stance postural control.
  • To differentiate the impact of object versus spatial visual working memory on balance.
  • To explore the neural resources shared between postural control and working memory.

Main Methods:

  • Employed a dual-task methodology in healthy young adults.
  • Utilized specific visual object and visual spatial working memory tasks.

Related Experiment Videos

  • Assessed performance on cognitive tasks and postural stability.

    • Main Results:

    • Challenging postural tasks did not significantly affect object working memory performance.
    • Performance on spatial working memory tasks was significantly degraded by challenging postural tasks.
    • No significant effects of the cognitive tasks on overall postural stability were observed.

    Conclusions:

    • Interactions between stance postural control and visual working memory are primarily confined to the spatial domain.
    • Cortically dissociated resources for object and spatial working memory are differentially affected by postural demands.
    • Further research is needed to fully elucidate the neural underpinnings of visual-cognitive interference with balance.