Cortical operational synchrony during audio–visual speech integration  

Oleh:

Fingelkurts, Andrew A. ; Fingelkurts, Alexander A. ; Krause, Christina M. ; Mottonen, Riikka ; Sams, Mikko

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 85 no. 2 (2003), page 297-312.
Topik: Multisensory integration; Crossmodal; Audio-visual; Synchronization; Operations; Large-scale networks; MEG
Fulltext: 85_02_Fingelkurts.pdf (496.61KB)

Isi artikel

Information from different sensory modalities is processed in different cortical regions. However, our daily perception is based on the overall impression resulting from the integration of information from multiple sensory modalities. At present it is not known how the human brain integrates information from different modalities into a unified percept. Using a robust phenomenon known as the McGurk effect it was shown in the present study that audio–visual synthesis takes place within a distributed and dynamic cortical networks with emergent properties. Various cortical sites within these networks interact with each other by means of socalled operational synchrony (Kaplan, Fingelkurts, Fingelkurts, & Darkhovsky, 1997). The temporal synchronization of cortical operations processing unimodal stimuli at different cortical sites reveals the importance of the temporal features of auditory and visual stimuli for audio–visual speech integration.

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