TY - JOUR
T1 - Early Integration Processing between Faces and Vowel Sounds in Human Brain
T2 - An MEG Investigation
AU - Nakamura, Itta
AU - Hirano, Yoji
AU - Ohara, Naotoshi
AU - Hirano, Shogo
AU - Ueno, Takefumi
AU - Tsuchimoto, Rikako
AU - Kanba, Shigenobu
AU - Onitsuka, Toshiaki
N1 - Publisher Copyright:
© 2015 S. Karger AG, Basel.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - Objective: Unconscious fast integration of face and voice information is a crucial brain function necessary for communicating effectively with others. Here, we investigated for evidence of rapid face-voice integration in the auditory cortex. Methods: Magnetic fields (P50m and N100m) evoked by visual stimuli (V), auditory stimuli (A) and audiovisual stimuli (VA), i.e. by face, vowel and simultaneous vowel-face stimuli, were recorded in 22 healthy subjects. Magnetoencephalographic data from 28 channels around bilateral auditory cortices were analyzed. Results: In both hemispheres, AV - V showed significantly larger P50m amplitudes than A. Additionally, compared with A, the N100m amplitudes and dipole moments of AV - V were significantly smaller in the left hemisphere, but not in the right hemisphere. Conclusions: Differential changes in P50m (bilateral) and N100m (left hemisphere) that occur when V (faces) are associated with A (vowel sounds) indicate that AV (face-voice) integration occurs in early processing, likely enabling us to communicate effectively in our lives.
AB - Objective: Unconscious fast integration of face and voice information is a crucial brain function necessary for communicating effectively with others. Here, we investigated for evidence of rapid face-voice integration in the auditory cortex. Methods: Magnetic fields (P50m and N100m) evoked by visual stimuli (V), auditory stimuli (A) and audiovisual stimuli (VA), i.e. by face, vowel and simultaneous vowel-face stimuli, were recorded in 22 healthy subjects. Magnetoencephalographic data from 28 channels around bilateral auditory cortices were analyzed. Results: In both hemispheres, AV - V showed significantly larger P50m amplitudes than A. Additionally, compared with A, the N100m amplitudes and dipole moments of AV - V were significantly smaller in the left hemisphere, but not in the right hemisphere. Conclusions: Differential changes in P50m (bilateral) and N100m (left hemisphere) that occur when V (faces) are associated with A (vowel sounds) indicate that AV (face-voice) integration occurs in early processing, likely enabling us to communicate effectively in our lives.
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U2 - 10.1159/000377680
DO - 10.1159/000377680
M3 - Article
C2 - 26044647
AN - SCOPUS:84930517529
SN - 0302-282X
VL - 71
SP - 187
EP - 195
JO - Neuropsychobiology
JF - Neuropsychobiology
IS - 4
ER -
