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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 9 of 9 1 Acoustic-level and language-specific processing of native and non-native phonological sequence onsets in the low gamma and theta-frequency bands Wagner, Monica; Ortiz-Mantilla, Silvia; Rusiniak, Mateusz... In: Sci Rep (2022) BASE Show details 2 Modulation of Theta Phase Synchrony during Syllable Processing as a Function of Interactive Acoustic Experience in Infancy Ortiz-Mantilla, Silvia; Roesler, Cynthia P; Realpe-Bonilla, Teresa... In: Cereb Cortex (2021) BASE Show details 3 Early Interactive Acoustic Experience with Non-speech Generalizes to Speech and Confers a Syllabic Processing Advantage at 9 Months Ortiz-Mantilla, Silvia; Realpe-Bonilla, Teresa; Benasich, April A. - : Oxford University Press, 2019 BASE Show details 4 Minimally-verbal children with autism show deficits in theta and gamma oscillations during processing of semantically-related visual information Ortiz-Mantilla, Silvia; Cantiani, Chiara; Shafer, Valerie L.. - : Nature Publishing Group UK, 2019 BASE Show details 5 Reduced left-lateralized pattern of event-related EEG oscillations in infants at familial risk for language and learning impairment Cantiani, Chiara; Ortiz-Mantilla, Silvia; Riva, Valentina. - : Elsevier, 2019 BASE Show details 6 Active auditory experience in infancy promotes brain plasticity in Theta and Gamma oscillations Musacchia, Gabriella; Ortiz-Mantilla, Silvia; Choudhury, Naseem. - : Elsevier, 2017 BASE Show details 7 A Modulatory Effect of Brief Passive Exposure to Non-linguistic Sounds on Intrinsic Functional Connectivity: Relevance to Cognitive Performance Koyama, Maki S; Ortiz-Mantilla, Silvia; Roesler, Cynthia P. - : Oxford University Press, 2017 BASE Show details 8 Oscillatory Dynamics Underlying Perceptual Narrowing of Native Phoneme Mapping from 6 to 12 Months of Age Ortiz-Mantilla, Silvia; Hämäläinen, Jarmo A.; Realpe-Bonilla, Teresa; Benasich, April A.. - : Society for Neuroscience, 2016 Abstract: During the first months of life, human infants process phonemic elements from all languages similarly. However, by 12 months of age, as language-specific phonemic maps are established, infants respond preferentially to their native language. This process, known as perceptual narrowing, supports neural representation and thus efficient processing of the distinctive phonemes within the sound environment. Although oscillatory mechanisms underlying processing of native and non-native phonemic contrasts were recently delineated in 6-month-old infants, the maturational trajectory of these mechanisms remained unclear. A group of typically developing infants born into monolingual English families, were followed from 6 to 12 months and presented with English and Spanish syllable contrasts varying in voice-onset time. Brain responses were recorded with high-density electroencephalogram, and sources of event-related potential generators identified at right and left auditory cortices at 6 and 12 months and also at frontal cortex at 6 months. Time-frequency analyses conducted at source level found variations in both θ and γ ranges across age. Compared with 6-month-olds, 12-month-olds' responses to native phonemes showed smaller and faster phase synchronization and less spectral power in the θ range, and increases in left phase synchrony as well as induced high-γ activity in both frontal and left auditory sources. These results demonstrate that infants become more automatized and efficient in processing their native language as they approach 12 months of age via the interplay between θ and γ oscillations. We suggest that, while θ oscillations support syllable processing, γ oscillations underlie phonemic perceptual narrowing, progressively favoring mapping of native over non-native language across the first year of life. SIGNIFICANCE STATEMENT During early language acquisition, typically developing infants gradually construct phonemic maps of their native language in auditory cortex. It is well known that, by 12 months of age, human infants move from universal discrimination of most linguistic phonemic contrasts to phonemic expertise in their native language. This perceptual narrowing occurs at the expense of the ability to process non-native phonemes. However, the neural mechanisms underlying this process are still poorly understood. Here we demonstrate that perceptual narrowing is, at least in part, accomplished by decreasing power and phase coherence in the θ range while increasing activity in high-γ in left auditory cortex. Understanding the normative neural mechanisms that support early language acquisition is crucial to understanding and perhaps ameliorating developmental language disorders. Keyword: Research Articles URL: http://www.ncbi.nlm.nih.gov/pubmed/27903720 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6601985/ https://doi.org/10.1523/JNEUROSCI.1162-16.2016 BASE Hide details 9 Enhancement of Gamma Oscillations Indicates Preferential Processing of Native over Foreign Phonemic Contrasts in Infants Ortiz-Mantilla, Silvia; Hämäläinen, Jarmo A.; Musacchia, Gabriella. - : Society for Neuroscience, 2013 BASE Show details

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