1. Vanderbilt University Department of Biomedical Engineering Device for Quantification of Re-Innervation of a Laryngeal Muscle Advisor: Dr. David Zealear Designers: Thomas Thomasson and Nirav Patel January 27, 2000

2. Background What ?- Development of a design and technique for the quantitative measurement of a re-innervated laryngeal muscle Why ?- To increase quality of life for patients suffering from denervated muscular system Who ? - Patients that have lost muscle control through paralysis of laryngeal muscles How ?- Recording EMG readings passes through the developed circuitry while tactile stimulation of the nerves is performed

3. Circuit Bandpass Filter Removes DC noise and high frequency AC noise Rectifier Returns absolute value of input Integrator Calculates area under input curve Peak Detector Holds maximum value from the integrator

4. Current Work The circuitry for the full-wave rectifier, bandpass filter, integrator, and peak detector has been built The simulation of the

5. Future Work Testing the breadboarded circuitry design will take place later today Hard-wiring will begin after circuit passes initial test Calculations for timing sequences of tactile stimulation will be discussed during Monday’s meeting with Dr. Zealear