3. Overview Background Motivation Initial Experimentation Designs –Ski Mask –Plaster Gauze with Back Support –Silicone Face Mold Decision Process Preliminary Testing Future Modifications and Testing

4. Background Information Brain plasticity Neuromodulation Regenerative medicine Trigeminal Nerve

5. Motivation Balance Studies Electrotactile Stimulation Problem Statement –Not all patients can use the tongue stimulator –Multiple Sclerosis, vestibular dysfunction, and Parkinson’s –Face model stimulate similar nerve-anyone can use

6. Preliminary Experimentation 2-point test Photo taken and modified by Kenneth Xu

7. Ski Mask Pros Moisture-wicking Patient comfort Easily purchased Cons Hard to wash Non-uniform contact Difficult electrode installation LETS CITE a WEBSITE HERE

8. Plaster Gauze with Back Support Pros Stable attachment Lightweight No protruding screws Cons Expensive Harder to conform to face Custom-made electrodes Uncomfortable

9. Silicone Face Mold Pros Fits all contours of face Consistent mechanical contact Sturdy electrode support Generates conductive interface Cons Custom fit Cumbersome electrical interface Possibly uncomfortable

10. Plaster Gauze with Back Support Pros Stable attachment Lightweight No protruding screws Cons Expensive Harder to conform to face Custom-made electrodes Uncomfortable

11. Decision Process mechanical contact Cost Speed  Silicone Face Mold

12. Preliminary Testing Resistance test –1-5 Ω –Mechanical contact deficiency (±2 Ω) Qualitative physical tests –Hands –Face

13. Future Modifications and Testing Face mold to include more area –Lower face –Neck Mask attachment Improve conductive epoxy connections Different electrodes Testing: stimulation threshold reproducibility

14. Future Modifications and Testing Face mold to include more area –Lower face –Neck Mask attachment Improve conductive epoxy connections Different electrodes Testing: stimulation threshold reproducibility

15. Future Modifications and Testing Face mold to include more area –Lower face –Neck Mask attachment Improve conductive epoxy connections Different electrodes Testing: stimulation threshold reproducibility