Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Neuroreport. 2005 Feb 8;16(2):125-8.

Primary auditory cortex activation by visual speech: an fMRI study at 3 T.

Author information

  • 1Laboratory of Computational Engineering, Helsinki University Central Hospital, Helsinki, Finland. pekkojo@lce.hut.fi

Abstract

Recent studies have yielded contradictory evidence on whether visual speech perception (watching articulatory gestures) can activate the human primary auditory cortex. To circumvent confounds due to inter-individual anatomical variation, we defined our subjects' Heschl's gyri and assessed blood oxygenation-dependent signal changes at 3 T within this confined region during visual speech perception and observation of moving circles. Visual speech perception activated Heschl's gyri in nine subjects, with activation in seven of them extending to the area of primary auditory cortex. Activation was significantly stronger during visual speech perception than during observation of the moving circles. Further, a significant hemisphere by stimulus interaction occurred, suggesting left Heschl's gyrus specialization for visual speech processing.

Comment in

PMID:
15671860
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Lippincott Williams & Wilkins
    Loading ...
    Write to the Help Desk