fig6
Figure 6. Piezoelectric pressure sensor for muscle motion monitoring. (A) Photographs of the sensor positions such as (i) diaphragm; (ii) jaw; and (iii) neck. The output voltages from (B) normal and rapid respiration, (C) chewing; and (D) swallowing. The output voltages from vocal stimulus (E) “Hi” and (F) “Houston”. The arrows indicate the second syllable.
