Analysis of the Ventriloquism Aftereffect Using Network Theory Techniques

TL;DR

This paper investigates how ventriloquism aftereffects alter auditory localization by analyzing EEG network changes, revealing early recalibration in auditory pathways and decay over time after exposure.

Contribution

It introduces a network analysis approach to understand the neural mechanisms of ventriloquism aftereffects, focusing on temporal dynamics in EEG data.

Findings

Recalibration occurs early in the auditory processing pathway.

The ventriloquism aftereffect decays over time after exposure.

EEG network analysis reveals neural changes associated with the aftereffect.

Abstract

Ventriloquism After-Effect is the phenomenon where sustained exposure to the ventriloquist illusion causes a change in unisensory auditory localization towards the location where the visual stimulus was present. We investigate the recalibration in EEG networks that causes this change and the track the timeline of changes in the auditory processing pathway. Our results obtained using network analysis, non-stationary time series analysis and multivariate pattern classification show that recalibration takes place early in the auditory processing pathway and the after-effect decays with time after exposure to the illusion.