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Differential representation of articulatory gestures and phonemes in motor, premotor, and inferior frontal cortices

Emily M. Mugler, Matthew C. Tate, Karen Livescu, Jessica Templer, Matthew Goldrick, View ORCID ProfileMarc W. Slutzky
doi: https://doi.org/10.1101/220723
Emily M. Mugler
1Departments of Neurology, Northwestern University, Chicago, IL 60611
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Matthew C. Tate
2Neurosurgery, Northwestern University, Chicago, IL 60611
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Karen Livescu
3Toyota Technological Institute at Chicago, Chicago, IL 60637
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Jessica Templer
1Departments of Neurology, Northwestern University, Chicago, IL 60611
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Matthew Goldrick
4Linguistics, Northwestern University, Chicago, IL 60611
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Marc W. Slutzky
1Departments of Neurology, Northwestern University, Chicago, IL 60611
5Physiology, Northwestern University, Chicago, IL 60611
6Physical Medicine & Rehabilitation, Northwestern University, Chicago, IL 60611
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  • ORCID record for Marc W. Slutzky
  • For correspondence: mslutzky@northwestern.edu
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ABSTRACT

Speech is a critical form of human communication and is central to our daily lives. Yet, despite decades of study, an understanding of the fundamental neural control of speech production remains incomplete. Current theories model speech production as a hierarchy from sentences and phrases down to words, syllables, speech sounds (phonemes) and the movements of speech articulator muscles used to produce these sounds (articulatory gestures). Here, we investigate the cortical representation of articulatory gestures and phonemes in speech motor, premotor, and inferior frontal cortices. Our results indicate that primary motor and premotor areas represent gestures to a greater extent than phonemes, while inferior frontal cortex represents both gestures and phonemes. These findings suggest that the cortical control of speech production shares a common representation with that of other types of movement, such as arm and hand movements.

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Posted November 16, 2017.
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Differential representation of articulatory gestures and phonemes in motor, premotor, and inferior frontal cortices
Emily M. Mugler, Matthew C. Tate, Karen Livescu, Jessica Templer, Matthew Goldrick, Marc W. Slutzky
bioRxiv 220723; doi: https://doi.org/10.1101/220723
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Differential representation of articulatory gestures and phonemes in motor, premotor, and inferior frontal cortices
Emily M. Mugler, Matthew C. Tate, Karen Livescu, Jessica Templer, Matthew Goldrick, Marc W. Slutzky
bioRxiv 220723; doi: https://doi.org/10.1101/220723

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