We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Motor Circuit and Superior Temporal Sulcus Activities Linked to Individual Differences in Multisensory Speech Perception.
- Authors
Li, Liyuan; Li, Rong; Huang, Xinju; Shen, Fei; Wang, Hongyu; Wang, Xuyang; Deng, Chijun; Wang, Chong; Yang, Jiale; Zhang, Leiyao; Li, Jiyi; Zou, Ting; Chen, Huafu
- Abstract
Integrating multimodal information into a unified perception is a fundamental human capacity. McGurk effect is a remarkable multisensory illusion that demonstrates a percept different from incongruent auditory and visual syllables. However, not all listeners perceive the McGurk illusion to the same degree. The neural basis for individual differences in modulation of multisensory integration and syllabic perception remains largely unclear. To probe the possible involvement of specific neural circuits in individual differences in multisensory speech perception, we first implemented a behavioral experiment to examine the McGurk susceptibility. Then, functional magnetic resonance imaging was performed in 63 participants to measure the brain activity in response to non-McGurk audiovisual syllables. We revealed significant individual variability in McGurk illusion perception. Moreover, we found significant differential activations of the auditory and visual regions and the left Superior temporal sulcus (STS), as well as multiple motor areas between strong and weak McGurk perceivers. Importantly, the individual engagement of the STS and motor areas could specifically predict the behavioral McGurk susceptibility, contrary to the sensory regions. These findings suggest that the distinct multimodal integration in STS as well as coordinated phonemic modulatory processes in motor circuits may serve as a neural substrate for interindividual differences in multisensory speech perception.
- Subjects
TEMPORAL lobe; SNOEZELEN; SPEECH perception; INDIVIDUAL differences; FUNCTIONAL magnetic resonance imaging; PERCEPTUAL illusions
- Publication
Brain Topography, 2021, Vol 34, Issue 6, p779
- ISSN
0896-0267
- Publication type
Article
- DOI
10.1007/s10548-021-00869-7