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Comment
. 2016 Jun 9:5:e17693.
doi: 10.7554/eLife.17693.

I see what you are saying

Gregory B Cogan  1
Affiliations
Comment

I see what you are saying

Gregory B Cogan. Elife. .

Abstract

The motor cortex in the brain tracks lip movements to help with speech perception.

Keywords: electroencephalography; human; language; lip movements; magnetoencephalography; neuroscience; oscillations; speech.

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Conflict of interest statement

The author declares that no competing interests exist.

Figures

Figure 1.
Figure 1.. A proposed model for the role of the motor system in speech perception.
A person produces speech by the coordinated movement of their articulatory system. The listener hears the sound (black line) and sees the mouth of the speaker open and close (represented by blue line). Some of the information in the sound is contained within the speech envelope (green line). The auditory regions of the brain (green circle) track the speech envelope, while the visual system (blue circle) tracks the visual movements of the mouth. The motor system (red circle) then decodes the intended mouth movement and integrates this with the response of the auditory regions to the incoming sounds.
See this image and copyright information in PMC

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References

    1. Arnal LH, Giraud AL. Cortical oscillations and sensory predictions. Trends in Cognitive Sciences. 2012;16:390–398. doi: 10.1016/j.tics.2012.05.003. - DOI - PubMed
    1. Cogan GB, Poeppel D. A mutual information analysis of neural coding of speech by low-frequency MEG phase information. Journal of Neurophysiology. 2011;106:554–563. doi: 10.1152/jn.00075.2011. - DOI - PMC - PubMed
    1. Du Y, Buchsbaum BR, Grady CL, Alain C. Noise differentially impacts phoneme representations in the auditory and speech motor systems. Proceedings of the National Academy of Sciences of the United States of America. 2014;111:7126–7131. doi: 10.1073/pnas.1318738111. - DOI - PMC - PubMed
    1. Gross J, Hoogenboom N, Thut G, Schyns P, Panzeri S, Belin P, Garrod S. Speech rhythms and multiplexed oscillatory sensory coding in the human brain. PLoS Biology. 2013;11:e17693. doi: 10.1371/journal.pbio.1001752. - DOI - PMC - PubMed
    1. Liberman AM. Speech: A Special Code. 1st Ed. Cambridge, MA: MIT Press; 1996.

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