Tongue Liminary Threshold Identification to Electrotactile Stimulation

TL;DR

This study investigates tongue electrotactile stimulation thresholds using different waveforms and electrode patterns, suggesting discontinuous stimulation with two electrodes for energy efficiency and better tactile perception.

Contribution

It provides new insights into optimal stimulation patterns and waveforms for tongue-based electrotactile interfaces, focusing on threshold identification.

Findings

Discontinuous stimulation with two electrodes reduces energy consumption.

Waveform type affects the threshold levels.

Two-electrode patterns improve tactile perception efficiency.

Abstract

Many applications use electrostimulation of the human skin to provide tactile sensation. The effect of electrotactile stimulations were studied on a 6x6 matrix of tactile electrodes placed on the anterior part of the tongue. The liminary threshold with continuous or discontinuous waveform and patterns with 2 or 4 electrodes was investigated. The result suggest that for energy saving and to improve the yield, it would probably be better to use discontinuous stimulation with two electrode patterns.