Change-driven cortical activation in multisensory environments: An MEG study

Emi Tanaka, Tetsuo Kida, Koji Inui, Ryusuke Kakigi

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The quick detection of dynamic changes in multisensory environments is essential to survive dangerous events and orient attention to informative events. Previous studies have identified multimodal cortical areas activated by changes of visual, auditory, and tactile stimuli. In the present study, we used magnetoencephalography (MEG) to examine time-varying cortical processes responsive to unexpected unimodal changes during continuous multisensory stimulation. The results showed that there were change-driven cortical responses in multimodal areas, such as the temporo-parietal junction and middle and inferior frontal gyri, regardless of the sensory modalities where the change occurred. These multimodal activations accompanied unimodal activations, both of which in general had some peaks within 300 ms after the changes. Thus, neural processes responsive to unimodal changes in the multisensory environment are distributed at different timing in these cortical areas.

Original languageEnglish
Pages (from-to)464-474
Number of pages11
JournalNeuroImage
Volume48
Issue number2
DOIs
Publication statusPublished - 2009 Nov 1

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Keywords

  • Magnetoencephalography (MEG)
  • Multiple source analysis
  • Multisensory integration
  • Temporo-parietal junction (TPJ)

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Neurology

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