@article{LialiouSotiropoulouGafos2021,
  author    = {Lialiou, Maria and Sotiropoulou, Stavroula and Gafos, Adamantios I.},
  title     = {Spatiotemporal coordination in word-medial stop-lateral and s-stop clusters of American English},
  series = {Phonetica : international journal of phonetic science},
  volume    = {78},
  journal   = {Phonetica : international journal of phonetic science},
  number    = {5-6},
  publisher = {De Gruyter Mouton},
  address   = {Berlin},
  issn      = {0031-8388},
  doi       = {10.1515/phon-2021-2010},
  pages     = {385 -- 433},
  year      = {2021},
  abstract  = {This paper is concerned with the relation between syllabic organization and intersegmental spatiotemporal coordination using Electromagnetic Articulometry recordings from seven speakers of American English (henceforth, English). Whereas previous work on English has focused on word-initial clusters (preceding a vowel whose identity was not systematically varied), the present work examined word-medial clusters /pl, kl, sp, sk/ in the context of three different vowel heights (high, mid, low). Our results provide evidence for a global organization for the segments involved in these cluster-vowel combinations. This is reflected in a number of ways: compression of the prevocalic consonant and reduction of CV timing in the word-medial cluster case compared to its singleton paired word in both stop-lateral and s-stop clusters, early vowel initiation (as permitted by the clusters' phonetic properties), and presence of compensatory relations between phonetic properties of different segments or intersegmental transitions within each cluster. In other words, we find that the global organization presiding over the segments partaking in these word-medial tautosyllabic CCVs is pleiotropic, that is, simultaneously expressed in multiple phonetic exponents rather than via a privileged metric such as c-center stability or any other such given single measure employed in previous works.},
  language  = {en}
}
@article{MokariGafosWilliams2021,
  author    = {Mokari, Payam Ghaffarvand and Gafos, Adamantios I. and Williams, Daniel},
  title     = {Perceptuomotor compatibility effects in vowels},
  series = {JASA Express Letters},
  volume    = {1},
  journal   = {JASA Express Letters},
  number    = {1},
  publisher = {American Institute of Physics},
  address   = {Melville},
  issn      = {2691-1191},
  doi       = {10.1121/10.0003039},
  pages     = {8},
  year      = {2021},
  abstract  = {In a cue-distractor task, speakers' response times (RTs) were found to speed up when they perceived a distractor syllable whose vowel was identical to the vowel in the syllable they were preparing to utter. At a more fine-grained level, subphonemic congruency between response and distractor-defined by higher number of shared phonological features or higher acoustic proximity-was also found to be predictive of RT modulations. Furthermore, the findings indicate that perception of vowel stimuli embedded in syllables gives rise to robust and more consistent perceptuomotor compatibility effects (compared to isolated vowels) across different response-distractor vowel pairs.},
  language  = {en}
}
@article{KuberskiGafos2021,
  author    = {Kuberski, Stephan R. and Gafos, Adamantios I.},
  title     = {Fitts' law in tongue movements of repetitive speech},
  series = {Phonetica : international journal of phonetic science},
  volume    = {78},
  journal   = {Phonetica : international journal of phonetic science},
  number    = {1},
  publisher = {De Gruyter Mouton},
  address   = {Berlin},
  issn      = {0031-8388},
  doi       = {10.1159/000501644},
  pages     = {3 -- 27},
  year      = {2021},
  abstract  = {Fitts' law, perhaps the most celebrated law of human motor control, expresses a relation between the kinematic property of speed and the non-kinematic, task-specific property of accuracy. We aimed to assess whether speech movements obey this law using a metronome-driven speech elicitation paradigm with a systematic speech rate control. Specifically, using the paradigm of repetitive speech, we recorded via electromagnetic articulometry speech movement data in sequences of the form /CV.../ from 6 adult speakers. These sequences were spoken at 8 distinct rates ranging from extremely slow to extremely fast. Our results demonstrate, first, that the present paradigm of extensive metronome-driven manipulations satisfies the crucial prerequisites for evaluating Fitts' law in a subset of our elicited rates. Second, we uncover for the first time in speech evidence for Fitts' law at the faster rates and specifically beyond a participant-specific critical rate. We find no evidence for Fitts' law at the slowest metronome rates. Finally, we discuss implications of these results for models of speech.},
  language  = {en}
}
@article{HoehleFritzscheBollAvetisyanetal.2021,
  author    = {H{\"o}hle, Barbara and Fritzsche, Tom and Boll-Avetisyan, Natalie and Hullebus, Marc and Gafos, Adamantios I.},
  title     = {Respect the surroundings},
  series = {JASA Express Letters},
  volume    = {1},
  journal   = {JASA Express Letters},
  number    = {2},
  publisher = {AIP Publ.},
  address   = {Melville},
  issn      = {2691-1191},
  doi       = {10.1121/10.0003574},
  pages     = {7},
  year      = {2021},
  abstract  = {Fourteen-month-olds' ability to distinguish a just learned word, /bu?k/, from its minimally different word, /du?k/, was assessed under two pre-exposure conditions: one where /b, d/-initial forms occurred in a varying vowel context and another where the vowel was fixed but the final consonant varied. Infants in the experiments benefited from the variable vowel but not from the variable final consonant context, suggesting that vowel variability but not all kinds of variability are beneficial. These results are discussed in the context of time-honored observations on the vowel-dependent nature of place of articulation cues for consonants.},
  language  = {en}
}