fMRI Study of Auditory- Somatosensory Multisensory Interaction
Fukunaga M, Higuchi T, Ito Y, Tanaka C, Umeda M, Mano H
Meiji University of Oriental Medicine
In this study, we investigated the correlation between the hemodynamic response to auditory, somatosensory stimuli and simultaneously given stimuli, by means of functional magnetic resonance. We presented all subjects to unimodal auditory (A) or tactile (T) stimuli, respectively, or both of them simultaneously(AT), using the right ear and palm. The differences of the responses across the A , T and AT were compared. We found significant signal decrease in the region of right temporal gyrus during AT than A,T ,which indicates the existence of an audio-tactile interaction suppressing the response to AT stimuli in the right superior temporal gyrus.