Double-Layered Cup-Shaped Device to Amplify Taste Sensation of Carbonation by the Electrical Stimulation on the Human Tongue

Abstract

We show that electrical stimulation on the human tongue amplifies the taste sensation of carbonated beverages. We have developed a novel electric taste system with two components: a cup-shaped device and its circuit for stimulation. The cup-shaped device has a double-layer structure. The circuit has a constant current control circuit and a signal generator, which allow adjustment of the electrical parameters. The device is hygiene when we demonstrate electric taste because the device has two-layered. Thus we can change the inner layer that touches the user’s mouth. The device is also inexpensive and easy to manufacture so that many people can experience them.