Vocal fold vibration can be measured through external neck electrodes via electrical impedance.

Evidence

The electrolaryngograph (or electroglottograph) is a device that monitors vocal fold vibration by measuring the electrical impedance between two electrodes that are placed externally on the neck at the level of the larynx. — David Howard, Jamie Angus, coustics and Psychoacoustics, 3034

Categorization

• DEFINE: Defines what an electrolaryngograph is and how it works — foundational instrument knowledge for psychoacoustics.