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A comparative study of virtual hand prosthesis control using an inductive tongue control system.
Daniel Johansen1, Fredrik Sebelius2, Stig Jensen3
1a Centre for Sensory-Motor Interaction, Department of Health Science and Technology , Aalborg University , Aalborg , Denmark.
Assistive Technology : the Official Journal of RESNA
|October 20, 2015
Summary
This study compared electromyogram (EMG) control with a combined EMG and inductive tongue control system (ITCS) for hand prosthesis activation. The ITCS system showed potential for enhancing prosthesis control, particularly for complex grasps.
Area of Science:
- Biomedical Engineering
- Rehabilitation Technology
- Prosthetics Control
Background:
- Hand prosthetics rely on effective control schemes for user function.
- Electromyogram (EMG) based control is a common method, but can be limited.
- Alternative control strategies are needed to improve prosthesis usability.
Purpose of the Study:
- To compare the activation time of hand prosthesis grasps using EMG control versus a combined EMG and inductive tongue control system (ITCS).
- To evaluate the efficacy of ITCS as an enhancement for prosthesis control.
Main Methods:
- A cross-over study design was employed with 10 able-bodied subjects.
- Subjects used a computer model of a hand to perform simulated grasping exercises.
- Activation times (ATs) for five different grasps were recorded and analyzed for both control schemes.
Main Results:
- EMG control showed significantly faster activation times for grasps 1 and 2 (p = 0.030; p = 0.004).
- The ITCS control scheme demonstrated statistically significant advantages for grasps 4 and 5 (p = 0.048; p = 0.004).
- No significant difference was found for grasp 3.
Conclusions:
- The combined EMG and ITCS control scheme shows promise for enhancing hand prosthesis control.
- ITCS may offer benefits for specific grasp types, complementing EMG-based systems.
- Further research into ITCS integration could improve prosthetic functionality and user experience.
