Regensburg 2016 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 17: Posters - Coupled Problems in Biological Systems: Model Identification, Analysis and Predictions
BP 17.1: Poster
Montag, 7. März 2016, 17:30–19:30, Poster C
Biological cybernetics in human motor control: from single-joint to multi-joint movements — •Alexandra Bayer1,2, Daniel Häufle1,2, Michael Günther1, and Syn Schmitt1,2 — 1Institut für Sport- und Bewegungswissenschaft, Universität Stuttgart, Germany — 2Stuttgart Research Centre for Simulation Technology, Universität Stuttgart, Germany
An open question in motor control is how different and complex movements are planned, controlled and organised in the human body. To investigate this question, biophysical modelling provides a framework to understand human motor control. For this method, physiologically motivated and experimentally validated models are required to predict the dynamic interplay of the neural controller with the musculoskeletal biophysics. Numerous model representations with different levels of detail already exist in literature. Therefore, the main goal of our cybernetic approach was to identify the basic biomechanical and biochemical properties of the neuro-musculoskeletal system for single-joint movements. Using a simple model to perform fast goal-directed arm movements, it was found that in addition to the parameterisation of the force-length curve, the movement velocity strongly depends on the model representing the activation dynamics. Based on these findings, it was possible to construct on overall human model applicable for investigations of complex multi-joint movements. Finally, such a multi-body model was used, for example, to investigate internal loads in human spine during simple movements like sitting down in a seat or during whole-body vibrations.