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Reliability and Validity of Attitude and Heading Reference System Motion Estimation in a Novel Mirror Therapy System

  • Wonshik Kim
  • Jaewon Beom
  • Chulwoo Park
  • Sukgyu Koh
  • Yoon Jae Kim
  • Youdan Kim
  • Sun Gun Chung
  • Sungwan Kim
Original Article

Abstract

In this study, we conducted an experiment for validating a motion estimation system used in novel mirror therapy. The proposed motion estimation system consists of two parts. The first part is motion estimation using attitude and heading reference system sensors. The system attaches a reference frame to a patient to provide flexibility to the patient’s movements. The second part is a compensation algorithm that uses principal component analysis (PCA). Ten subjects performed simple reaching tasks for the validation experiment. The results showed success rate of 89.67% under normal conditions. The PCA-based compensation algorithm increases the success rate from 89.67 to 92.89%. Accurate capturing of healthy arm motion will make effective robot-aided mirror therapy systems feasible.

Keywords

Attitude and heading reference system Inertia measurement unit Motion estimation Robot-aided mirror therapy Principal component analysis Robotic rehabilitation 

Notes

Acknowledgements

This work was funded by the 2012 Seoul National University Brain Fusion Program (Grant Number: 800-20120444) and BK21 Plus Program through the National Research Foundation of Korea funded by the Ministry of Education (Grant Number: 22A20130011025).

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Copyright information

© Taiwanese Society of Biomedical Engineering 2018

Authors and Affiliations

  • Wonshik Kim
    • 1
  • Jaewon Beom
    • 2
  • Chulwoo Park
    • 3
  • Sukgyu Koh
    • 1
  • Yoon Jae Kim
    • 1
  • Youdan Kim
    • 3
  • Sun Gun Chung
    • 4
  • Sungwan Kim
    • 5
    • 6
  1. 1.Interdisciplinary Program for Bioengineering, Graduate SchoolSeoul National UniversitySeoulSouth Korea
  2. 2.Department of Physical Medicine and RehabilitationChung-Ang University College of MedicineSeoulSouth Korea
  3. 3.Department of Mechanical and Aerospace EngineeringSeoul National University College of EngineeringSeoulSouth Korea
  4. 4.Department of Rehabilitation Medicine, Seoul National University College of MedicineSeoul National University HospitalSeoulSouth Korea
  5. 5.Department of Biomedical EngineeringSeoul National University College of MedicineSeoulSouth Korea
  6. 6.Institute of Medical and Biological EngineeringSeoul National UniversitySeoulSouth Korea

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