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Audio-visual integration effect in lateral occipital cortex during an object recognition task: An interference pilot study
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DOI：10.1016/j.brs.2016.02.009.png)
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Background: Recent neuroimaging data support the hypothesis of a multisensory interplay at low-level sensory-specific cortex. Objective: We used an on-line interference approach by rTMS to investigate the role of the left lateral occipital cortex (LOC) in audio-visual (AV) object recognition process. Methods: Fifteen healthy volunteers performed a visual identification task of degraded pictures presented alone or simultaneously to coherent or non-coherent sounds. Focal 10-Hz rTMS at an intensity of 100% resting motor threshold was delivered simultaneously to the picture. Two blocks of 60 pictures were randomly displayed in two different experimental conditions: rTMS of the left LOC and over Cz. Results: rTMS of the left LOC produced a worsening of the accuracy compared to rTMS over Cz specifically in the coherent AV condition. Conclusion: These data support the view that audio-visual interaction effect may occur at early stage of recognition processing. (C) 2016 Elsevier Inc. All rights reserved.
Keyword:
Audio-visual integration
Transcranial magnetic stimulation
Object recognition
Lateral occipital cortex
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