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1
Intraoperative mapping of expressive language cortex using passive real-time electrocorticography
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Spatio-Temporal Progression of Cortical Activity Related to Continuous Overt and Covert Speech Production in a Reading Task
Brumberg, Jonathan S.; Krusienski, Dean J.; Chakrabarti, Shreya. - : Public Library of Science, 2016
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Spatio-Temporal Progression of Cortical Activity Related to Continuous Overt and Covert Speech Production in a Reading Task
Gunduz, Aysegul; Schalk, Gerwin; Ritaccio, Anthony L.. - : Public Library of Science, 2016
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Electrocorticographic representations of segmental features in continuous speech
Abstract: Acoustic speech output results from coordinated articulation of dozens of muscles, bones and cartilages of the vocal mechanism. While we commonly take the fluency and speed of our speech productions for granted, the neural mechanisms facilitating the requisite muscular control are not completely understood. Previous neuroimaging and electrophysiology studies of speech sensorimotor control has typically concentrated on speech sounds (i.e., phonemes, syllables and words) in isolation; sentence-length investigations have largely been used to inform coincident linguistic processing. In this study, we examined the neural representations of segmental features (place and manner of articulation, and voicing status) in the context of fluent, continuous speech production. We used recordings from the cortical surface [electrocorticography (ECoG)] to simultaneously evaluate the spatial topography and temporal dynamics of the neural correlates of speech articulation that may mediate the generation of hypothesized gestural or articulatory scores. We found that the representation of place of articulation involved broad networks of brain regions during all phases of speech production: preparation, execution and monitoring. In contrast, manner of articulation and voicing status were dominated by auditory cortical responses after speech had been initiated. These results provide a new insight into the articulatory and auditory processes underlying speech production in terms of their motor requirements and acoustic correlates.
Keyword: electrocorticography (ECoG); manner of articulation; place of articulation; speech processing; voicing
URL: http://hdl.handle.net/1808/22096
https://doi.org/10.3389/fnhum.2015.00097
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Spatio-temporal Progression of Cortical Activity Related to Continuous Overt and Covert Speech Production in a Reading Task (Dataset)
Brumberg, Jonathan S.; Krusienski, Dean J.; Chakrabarti, Shreya. - : Public Library of Science, 2016
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6
Electrocorticographic representations of segmental features in continuous speech
Lotte, Fabien; Brumberg, Jonathan S.; Brunner, Peter. - : Frontiers Media S.A., 2015
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