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Updated: Dec 18, 2025

Detecting Pre-Stimulus Source-Level Effects on Object Perception with Magnetoencephalography
Published on: July 26, 2019
Interaction between auditory and visual stimulus relating to the vowel sounds in the auditory cortex in humans: a
Kensaku Miki1, Shoko Watanabe, Ryusuke Kakigi
1Department of Biological Control System, National Institute for Physiological Sciences, Okazaki 444-8585, Japan. kensaku@nips.ac.jp
Abstract:
We investigated the interaction between auditory and visual stimulus relating to the vowel sounds in the auditory cortex in humans, using magnetoencephalography. We compared the difference in the main component, M100 generated in the auditory cortex, in terms of peak latency, amplitude, dipole location and moment, following the vowel sound_/a/_between two conditions: (1) showing a face with closed mouth; and (2) showing the same face with mouth movement appearing to pronounce/a/using an apparent motion method. We found no significant difference in the M100 component between the two conditions within or between the right and left hemispheres. These findings indicated that the vowel sound perception in the auditory cortex, at least in the primary processing stage, was not affected by viewing mouth movement.
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