@article{OffredeJacobiReberniketal.2020,
  author    = {Offrede, Tom F. and Jacobi, Jidde and Rebernik, Teja and de Jong, Lisanne and Keulen, Stefanie and Veenstra, Pauline and Noiray, Aude and Wieling, Martijn},
  title     = {The impact of alcohol on L1 versus L2},
  series = {Language and Speech},
  volume    = {64},
  journal   = {Language and Speech},
  number    = {3},
  publisher = {SAGE Publications},
  address   = {Thousand Oaks},
  issn      = {1756-6053},
  doi       = {10.1177/0023830920953169},
  pages     = {681 -- 692},
  year      = {2020},
  abstract  = {Alcohol intoxication is known to affect many aspects of human behavior and cognition; one of such affected systems is articulation during speech production. Although much research has revealed that alcohol negatively impacts pronunciation in a first language (L1), there is only initial evidence suggesting a potential beneficial effect of inebriation on articulation in a non-native language (L2). The aim of this study was thus to compare the effect of alcohol consumption on pronunciation in an L1 and an L2. Participants who had ingested different amounts of alcohol provided speech samples in their L1 (Dutch) and L2 (English), and native speakers of each language subsequently rated the pronunciation of these samples on their intelligibility (for the L1) and accent nativelikeness (for the L2). These data were analyzed with generalized additive mixed modeling. Participants' blood alcohol concentration indeed negatively affected pronunciation in L1, but it produced no significant effect on the L2 accent ratings. The expected negative impact of alcohol on L1 articulation can be explained by reduction in fine motor control. We present two hypotheses to account for the absence of any effects of intoxication on L2 pronunciation: (1) there may be a reduction in L1 interference on L2 speech due to decreased motor control or (2) alcohol may produce a differential effect on each of the two linguistic subsystems.},
  language  = {en}
}
@article{NoirayMenardIskarous2013,
  author    = {Noiray, Aude and Menard, Lucie and Iskarous, Khalil},
  title     = {The development of motor synergies in children ultrasound and acoustic measurements},
  series = {The journal of the Acoustical Society of America},
  volume    = {133},
  journal   = {The journal of the Acoustical Society of America},
  number    = {1},
  publisher = {American Institute of Physics},
  address   = {Melville},
  issn      = {0001-4966},
  doi       = {10.1121/1.4763983},
  pages     = {444 -- 452},
  year      = {2013},
  abstract  = {The present study focuses on differences in lingual coarticulation between French children and adults. The specific question pursued is whether 4-5 year old children have already acquired a synergy observed in adults in which the tongue back helps the tip in the formation of alveolar consonants. Locus equations, estimated from acoustic and ultrasound imaging data were used to compare coarticulation degree between adults and children and further investigate differences in motor synergy between the front and back parts of the tongue. Results show similar slope and intercept patterns for adults and children in both the acoustic and articulatory domains, with an effect of place of articulation in both groups between alveolar and non-alveolar consonants. These results suggest that 4-5 year old children (1) have learned the motor synergy investigated and (2) have developed a pattern of coarticulatory resistance depending on a consonant place of articulation. Also, results show that acoustic locus equations can be used to gauge the presence of motor synergies in children.},
  language  = {en}
}
@article{AbakarovaIskarousNoiray2018,
  author    = {Abakarova, Dzhuma and Iskarous, Khalil and Noiray, Aude},
  title     = {Quantifying lingual coarticulation in German using mutual information},
  series = {The journal of the Acoustical Society of America},
  volume    = {144},
  journal   = {The journal of the Acoustical Society of America},
  number    = {2},
  publisher = {American Institute of Physics},
  address   = {Melville},
  issn      = {0001-4966},
  doi       = {10.1121/1.5047669},
  pages     = {897 -- 907},
  year      = {2018},
  abstract  = {In previous research, mutual information (MI) was employed to quantify the physical information shared between consecutive phonological segments, based on electromagnetic articulography data. In this study, MI is extended to quantifying coarticulatory resistance (CR) versus overlap in German using ultrasound imaging. Two measurements are tested as input to MI: (1) the highest point on the tongue body and (2) the first coefficient of the discrete Fourier transform (DFT) of the whole tongue contour. Both measures are used to examine changes in coarticulation between two time points during the syllable span: the consonant midpoint and the vowel onset. Results corroborate previous findings reporting differences in coarticulatory overlap in German and across languages. Further, results suggest that MI used with the highest point on the tongue body captures distinctions related both to place and manner of articulation, while the first DFT coefficient does not provide any additional information regarding global (whole tongue) as opposed to local (individual articulator) aspects of CR. However, both methods capture temporal distinctions in coarticulatory resistance between the two time points. Results are discussed with respect to the potential of MI measure to provide a way of unifying coarticulation quantification methods across data collection techniques.},
  language  = {en}
}
@article{NoirayAbakarovaRubertusetal.2018,
  author    = {Noiray, Aude and Abakarova, Dzhuma and Rubertus, Elina and Kr{\"u}ger, Stella and Tiede, Mark},
  title     = {How do children organize their speech in the first years of life?},
  series = {Journal of speech, language, and hearing research},
  volume    = {61},
  journal   = {Journal of speech, language, and hearing research},
  number    = {6},
  publisher = {American Speech-Language-Hearing Assoc.},
  address   = {Rockville},
  issn      = {1092-4388},
  doi       = {10.1044/2018_JSLHR-S-17-0148},
  pages     = {1355 -- 1368},
  year      = {2018},
  abstract  = {Purpose: This study reports on a cross-sectional investigation of lingual coarticulation in 57 typically developing German children (4 cohorts from 3.5 to 7 years of age) as compared with 12 adults. It examines whether the organization of lingual gestures for intrasyllabic coarticulation differs as a function of age and consonantal context. Method: Using the technique of ultrasound imaging, we recorded movement of the tongue articulator during the production of pseudowords, including various vocalic and consonantal contexts. Results: Results from linear mixed-effects models show greater lingual coarticulation in all groups of children as compared with adults with a significant decrease from the kindergarten years (at ages 3, 4, and 5 years) to the end of the 1st year into primary school (at age 7 years). Additional differences in coarticulation degree were found across and within age groups as a function of the onset consonant identity (/b/, / d/, and /g/). Conclusions: Results support the view that, although coarticulation degree decreases with age, children do not organize consecutive articulatory gestures with a uniform organizational scheme (e.g., segmental or syllabic). Instead, results suggest that coarticulatory organization is sensitive to the underlying articulatory properties of the segments combined.},
  language  = {en}
}
@article{NoirayWielingAbakarovaetal.2019,
  author    = {Noiray, Aude and Wieling, Martijn and Abakarova, Dzhuma and Rubertus, Elina and Tiede, Mark},
  title     = {Back from the future},
  series = {Journal of speech, language, and hearing research},
  volume    = {62},
  journal   = {Journal of speech, language, and hearing research},
  number    = {8},
  publisher = {American Speech-Language-Hearing Association},
  address   = {Rockville},
  issn      = {1092-4388},
  doi       = {10.1044/2019_JSLHR-S-CSMC7-18-0208},
  pages     = {3033 -- 3054},
  year      = {2019},
  abstract  = {Purpose: This study examines the temporal organization of vocalic anticipation in German children from 3 to 7 years of age and adults. The main objective was to test for nonlinear processes in vocalic anticipation, which may result from the interaction between lingual gestural goals for individual vowels and those for their neighbors over time. Method: The technique of ultrasound imaging was employed to record tongue movement at 5 time points throughout short utterances of the form V1\#CV2. Vocalic anticipation was examined with generalized additive modeling, an analytical approach allowing for the estimation of both linear and nonlinear influences on anticipatory processes. Conclusions: A developmental transition towards more segmentally-specified coarticulatory organizations seems to occur from kindergarten to primary school to adulthood. In adults, nonlinear anticipatory patterns over time suggest a strong differentiation between the gestural goals for consecutive segments. In children, this differentiation is not yet mature: Vowels show greater prominence over time and seem activated more in phase with those of previous segments relative to adults.},
  language  = {en}
}