Electropalatography (EPG) System

Electropalatography determines tongue-palate contact by using a special artificial palate that contains 62 electrodes embedded on its lingual surface. A small electrical signal is sent to the user, which is conducted through the tongue to any touched electrodes. These tongue-palate contact patterns are then displayed on a computer screen.

Electroglottography (EGG) System

Electroglottography operates by sensing the electrical conductance between two electrodes placed on the neck, either side of the thyroid cartilage. Each gold plated electrode consists of an inner disk surrounded by an outer guard-ring, and is held in position by an elastic neckband.

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