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Performing Isometric Force Control in Combination with a Cognitive Task: A Multidimensional Assessment

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  • Jean-Jacques Temprado
  • Solveig Vieluf
  • Nicolas Bricot
  • Eric Berton
  • Rita Sleimen-Malkoun

Abstract

Introduction: We used a multidimensional approach to study isometric force control in single and dual-task conditions. Methods: Multiple measures of performance, efficiency, variability, and structural interference were calculated at low and higher force levels under single (force maintenance) and dual-task (force maintenance and reaction time) conditions. Results: Reaction time and signal-to-noise ratio were larger in the dual-task conditions. They were also greater for the higher force condition, while sample entropy was lower. Perturbation analyses revealed smaller relative amplitude of downward perturbations for the higher force level. Discussion: Attentional effort and efficiency are positively related when force level increases, and inversely related to entropy. These relations were presumably mediated by attentional investment. Behavioral perturbations show that attentional resources and structural interference models are not mutually exclusive to account for dual-task situation. Overall, the present study highlights the interest of a multidimensional assessment of force control.

Suggested Citation

  • Jean-Jacques Temprado & Solveig Vieluf & Nicolas Bricot & Eric Berton & Rita Sleimen-Malkoun, 2015. "Performing Isometric Force Control in Combination with a Cognitive Task: A Multidimensional Assessment," PLOS ONE, Public Library of Science, vol. 10(11), pages 1-13, November.
    • Handle: RePEc:plo:pone00:0142627
    DOI: 10.1371/journal.pone.0142627
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