Related Experiment Video
Updated: Feb 25, 2026

07:53
µTongue: A Microfluidics-Based Functional Imaging Platform for the Tongue In Vivo
Published on: April 22, 2021
5.0K
The tongue display unit (TDU) for electrotactile spatiotemporal pattern presentation
1Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1300 University Ave., Madison, WI 53711, USA.
Abstract:
The Tongue Display Unit (TDU) is a 144-channel programmable pulse generator that delivers dc-balanced voltage pulses suitable for electrotactile (electrocutaneous) stimulation of the anterior-dorsal tongue, through a matrix of surface electrodes. This article reviews the theory of operation and a design overview of the TDU, as well as selected applications. These include sensory substitution, tactile information display and neurorehabilitation via induced neuroplasticity.

