Impact of galvanic vestibular stimulation electrode current density on brain current flow patterns: Does electrode size matter?

ABSTRACT:

Background

Galvanic vestibular stimulation (GVS) uses at least one electrode placed on the mastoid process with one or multiple placed over other head areas to stimulate the vestibular system. The exact electrode size used is not given much importance in the literature and has not been reported in several studies. In a previous study, we compared the clinical effects of using different electrode sizes (3 cm2 and 35 cm2) with placebo but with the same injected current, on postural control. We observed significant improvement using the smaller size electrode but not with the bigger size electrode. The goal of this study was to simulate the current flow patterns with the intent to shed light and potentially explain the experimental outcome.

Methods

We used an ultra-high-resolut

SUBMITTER: Truong DQ 

PROVIDER: S-EPMC9897567 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature