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Updated: Jun 6, 2026
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In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue
Published on: July 6, 2017
Effects of additional workload on hand and tongue performance
Ashley N Johnson1, Xueliang Huo, Chihwen Cheng
1School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0250, USA. ashley.johnson@gatech.edu
Summary
The Tongue Drive System (TDS) allows tongue motion tracking for control. Concurrent hand and tongue tasks decreased accuracy, but TDS maintained tongue speed, suggesting an advantage for complex tasks.
Area of Science:
- Human-Computer Interaction
- Biomedical Engineering
- Neuroscience
Background:
- The Tongue Drive System (TDS) is a wearable device for real-time tongue motion tracking.
- Tongue motion offers a potential voluntary motor modality for communication and control.
- Assessing TDS performance in realistic environments is crucial for application development.
Purpose of the Study:
- To evaluate the speed and accuracy of tongue and hand movements during independent and concurrent tasks.
- To investigate the effect of concurrent cognitive tasks on tongue and hand movement performance.
- To determine the viability of TDS for control applications requiring rapid, goal-directed movements.
Main Methods:
- Preliminary human trials with 13 able-bodied subjects.
- Assessment of rapid repetitive goal-directed movements using hand (index finger) and tongue.
- Comparison of independent versus concurrent hand and tongue tasks, and concurrent hand/tongue with cognitive tasks.
Main Results:
- Concurrent hand and tongue tasks reduced accuracy for both movements compared to independent tasks.
- Hand movement speed decreased with concurrent tasks, unlike tongue movement speed.
- Tongue movement speed was maintained during concurrent hand-tongue tasks but decreased with concurrent cognitive tasks.
Conclusions:
- TDS enables tongue motion tracking for control applications.
- Tongue control via TDS offers potential advantages in maintaining movement speed during concurrent tasks compared to hand control.
- TDS shows promise for applications involving rapid, goal-directed movements, especially when cognitive load is present.
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