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Learning Interference in Dynamic Manipulation with Redundant Degrees of Freedom

  • Qiushi Fu
  • Marco SantelloEmail author
Conference paper
Part of the Biosystems & Biorobotics book series (BIOSYSROB, volume 15)

Abstract

One important dimension of sensorimotor rehabilitation is motor practice to induce adaptation to new and improved movement patterns. Previous studies have shown that motor adaptation in a novel, directional dynamic context induces interference on the learning of a subsequent task. However, little data exist about how such interference affects the low-level coordination pattern of the end-effectors in the presence of biomechanical redundancy. We addressed this question by using a novel experimental design based on velocity-dependent torque perturbations delivered by haptic devices during three-finger dynamic manipulation tasks. We found that the finger force patterns in the initial stages after context switch was modulated by the preceding contexts, exhibiting higher energy cost. These findings provide insights to improving protocols for sensorimotor rehabilitation.

Keywords

Grip Force Coordination Pattern Finger Force Context Switch Preceding Context 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported in part by a National Science Foundation BCS-1153034.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.School of Biological and Health Systems EngineeringArizona State UniversityTempeUSA

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