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Updated: Feb 1, 2026

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI
Published on: March 19, 2021
Simultaneous electromagnetic articulography and electroglottography data acquisition of natural speech
Sarah Harper1, Sungbok Lee1, Louis Goldstein1
1Department of Linguistics, University of Southern California, Los Angeles, California 90089, USA skharper@usc.edu, sungbokl@gmail.com, louisgol@usc.edu, dbyrd@dornsife.usc.edu.
Abstract:
This paper reports on the concurrent use of electroglottography (EGG) and electromagnetic articulography (EMA) in the acquisition of EMA trajectory data for running speech. Static and dynamic intersensor distances, standard deviations, and coefficients of variation associated with inter-sample distances were compared in two conditions: with and without EGG present. Results indicate that measurement discrepancies between the two conditions are within the EMA system's measurement uncertainty. Therefore, potential electromagnetic interference from EGG does not seem to cause differences of practical importance on EMA trajectory behaviors, suggesting that simultaneous EMA and EGG data acquisition is a viable laboratory procedure for speech research.
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