Alpha-band rhythm modulation under the condition of subliminal face presentation: MEG study.

Abstract Text

The human brain has two streams to process visual information: a dorsal stream and a ventral stream. Negative potential N170 or its magnetic counterpart M170 is known as the face-specific signal originating from the ventral stream. It is possible to present a visual image unconsciously by using continuous flash suppression (CFS), which is a visual masking technique adopting binocular rivalry. In this work, magnetoencephalograms were recorded during presentation of the three invisible images: face images, which are processed by the ventral stream; tool images, which could be processed by the dorsal stream, and a blank image. Alpha-band activities detected by sensors that are sensitive to M170 were compared. The alpha-band rhythm was suppressed more during presentation of face images than during presentation of the blank image (p=.028). The suppression remained for about 1 s after ending presentations. However, no significant difference was observed between tool and other images. These results suggest that alpha-band rhythm can be modulated also by unconscious visual images.

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2016-09-08 09:42:40

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Citation:- Sakuraba S, Kobayashi S, Sakai S, Yokosawa S, .Alpha-band rhythm modulation under the condition of subliminal face presentation: MEG study. Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference 2013-;201()6909-12 DOI:10.1109/EMBC.2013.6611146

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Details of Journal

Journal Title - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference

ISSN - 1557-170X

Volume - 201

Issue - 0

Publish date - 2013-

Language - eng

Country - United States


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