Saltiness and umami suppression by cathodal electrical stimulation

Abstract

In this work, we demonstrate that cathodal direct current stimulation to the tongue suppresses the perception of saltiness and umami. This work also investigates the relationship between the amplitude of the stimulation current and the magnitude of the taste suppression. With this technique and extensions to it, any tastes would be able to be reproduced or modified virtually, which would be helpful to reduce excessive intake of substances causing lifestyle disease.