Neuromotor Dynamics of Human Locomotion in Challenging Settings

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2020
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Santuz, Alessandro
Brüll, Leon
Ekizos, Antonis
Schroll, Arno
Eckardt, Nils
Kibele, Armin
Arampatzis, Adamantios
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iScience. Elsevier. 2020, 23(1), 100796. eISSN 2589-0042. Available under: doi: 10.1016/j.isci.2019.100796
Zusammenfassung

Is the control of movement less stable when we walk or run in challenging settings? Intuitively, one might answer that it is, given that challenging locomotion externally (e.g., rough terrain) or internally (e.g., age-related impairments) makes our movements more unstable. Here, we investigated how young and old humans synergistically activate muscles during locomotion when different perturbation levels are introduced. Of these control signals, called muscle synergies, we analyzed the local stability and the complexity (or irregularity) over time. Surprisingly, we found that perturbations force the central nervous system to produce muscle activation patterns that are less unstable and less complex. These outcomes show that robust locomotion control in challenging settings is achieved by producing less complex control signals that are more stable over time, whereas easier tasks allow for more unstable and irregular control.

Zusammenfassung in einer weiteren Sprache
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796 Sport
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Behavioral Neuroscience, Biological Sciences, Neuroscience
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ISO 690SANTUZ, Alessandro, Leon BRÜLL, Antonis EKIZOS, Arno SCHROLL, Nils ECKARDT, Armin KIBELE, Michael SCHWENK, Adamantios ARAMPATZIS, 2020. Neuromotor Dynamics of Human Locomotion in Challenging Settings. In: iScience. Elsevier. 2020, 23(1), 100796. eISSN 2589-0042. Available under: doi: 10.1016/j.isci.2019.100796
BibTex
@article{Santuz2020-01-24Neuro-55079,
  year={2020},
  doi={10.1016/j.isci.2019.100796},
  title={Neuromotor Dynamics of Human Locomotion in Challenging Settings},
  number={1},
  volume={23},
  journal={iScience},
  author={Santuz, Alessandro and Brüll, Leon and Ekizos, Antonis and Schroll, Arno and Eckardt, Nils and Kibele, Armin and Schwenk, Michael and Arampatzis, Adamantios},
  note={Article Number: 100796}
}
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