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Comparing Activated Brain Regions Between Noisy and Conventional Galvanic Vestibular Stimulation Using Functional Magnetic Resonance Imaging by Tsubasa Mitsutake; Maiko Sakamoto; Etsuo Horikawa is a Neuroscience article available to read on EtoBox.

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## Objective: Galvanic vestibular stimulation (gvs) enhances vestibular sensory inputs in vestibular afferents. however, it is unclear whether noisy and conventional gvs activate different regions of the brain. the purpose of this study was to investigate the differences in activated brain regions between those two interventions using functional mri (fmri). ## Methods: Twenty-four healthy volunteers who met the inclusion/exclusion criteria were randomly assigned to the noisy gvs or conventional gvs groups. brain activity was measured during stimulation and compared with that during resting fmri. this study used a blocked design comprising four task-rest blocks, each consisting of a 30-s period of vestibular stimulation followed by a 30-s period of rest. we evaluated the differences in contrast images between the noisy and conventional gvs groups. ## Results: The noisy gvs group showed significantly increased activation in the vestibular system-related brain regions, including the insula and central operculum. the conventional gvs group showed significant activity in multisensory areas, including the supramarginal gyrus, central operculum and opercular part of the inferior frontal g

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Author

Tsubasa Mitsutake; Maiko Sakamoto; Etsuo Horikawa

Publisher

Ovid Technologies (Wolters Kluwer Health)

Published

2021

Language

EN

Field

Neuroscience (Life Sciences)