About

Argyro Katsika is an Associate Professor in the Department of Linguistics at the University of California, Santa Barbara. Her specialization includes phonetics, speech production, laboratory phonology, articulatory phonology, and prosody. She is involved in research related to the physical and acoustic aspects of speech, focusing on how speech sounds are produced and organized. Her work contributes to a deeper understanding of the mechanisms underlying speech production and the phonological organization of speech sounds, integrating laboratory methods and theoretical insights to advance the field of applied linguistics.

Research topics

• Political Science
• Computer Science
• Humanities
• Sociology
• Philosophy
• Linguistics
• Psychology
• Speech recognition
• Business
• Art
• Library science

Selected publications

• Distinct Articulatory Effects of Tone and Focus in Taiwan Mandarin

  2026-05-14

  articleOpen accessSenior author

  In tone languages such as Taiwan Mandarin, pitch simultaneously encodes lexical tone and intonation, yet how these two sources of pitch modulation interact while preserving meaning remains unclear.This study uses electromagnetic articulography (EMA) to examine the supra-laryngeal articulatory underpinnings of lexical tone and its interaction with focus marking-which is known to induce pitch expansion-across Taiwan Mandarin's four tones.Target stimuli consisted of two lexical-tone minimal sets of monosyllabic words, elicited phrase-medially under five conditions: pre-focal, post-focal, broad, narrow, and contrastive focus.Analyses of onset consonant (C) gestures reveal distinct kinematic signatures for focus marking versus lexical tone.C gestures co-produced with contour tones (T2, T3, T4) are larger and faster than those co-produced with the high-level tone (T1).In contrast, focus is expressed through temporal adjustments: narrow and contrastive focus show longer C gestures than broad and unfocused conditions.These findings suggest that lexical tone and intonational focus each modulate articulatory gestures in Taiwan Mandarin but do so differently, influencing displacement and duration, respectively.This pattern contrasts with lexical-stress languages, where stress and focus typically affect both dimensions simultaneously, and contributes to a cross-linguistic understanding of word-and phrase-level prominence.

  PublisherOA PDFDOI

• Discourse Context in the Perception of Mandarin Tone-Intonation Ambiguity

  2026-05-14

  articleOpen accessSenior author

  In Mandarin, F0 encodes both sentence-level intonation and lexical tone.Declaratives typically have a falling pitch contour, while morphosyntactically unmarked polar interrogatives have a rising contour.Since Tone 2 rises and Tone 4 falls, sentences ending in Tone 2 can be perceptually ambiguous, as the final rise could reflect either lexical tone or interrogative intonation.This study examines how listeners use discourse context to interpret tone-intonation ambiguity.In an online identification task, participants heard short dialogues in which a context utterance preceded a target utterance and judged whether the target was declarative or interrogative.The target sentences varied in intonation (interrogative vs. declarative) and final lexical tone (Tone 2 vs. Tone 4).Context-target pairings were either pragmatically congruent, where the context supported the target's intonation, or incongruent, where the context supported the competing intonation.Results show that congruent pairings elicited faster and more accurate responses than incongruent ones.Tone 4 and declarative intonation independently improved identification rates.Tone 2 interrogatives in mismatching contexts yielded low accuracy but relatively fast reaction times, suggesting they may have been perceived as congruent realizations of the competing intonation.These findings indicate that discourse context interacts with acoustic cues, shaping the perception of Mandarin intonation.

  PublisherOA PDFDOI

• A first look at the prosody of focus and stress in Yami (Tao)

  2026-05-14

  articleOpen accessSenior author

  This study explores the intersection of focus and word stress in Yami/Tao (Austronesian; Taiwan).Yami has previously been reported to exhibit stress, but empirical evidence supporting this claim has been mixed, and it is still unclear if stress is conflated with other potential sources of prominence such as focus marking.Here, we aim to 1) disentangle phrase-level from word-level prominence by investigating how focus is phonetically encoded on putatively stressed syllables, and 2) examine whether different focus types are distinguished.We report the results of an experiment contrasting trisyllabic statives (representing penultimate stress) with nouns and verbs (representing final stress) as target words, which were produced in contextually-prompted dialogues under two focal conditions (contrastive, narrow) and two post-focal conditions (postnarrow, post-contrastive).Analyses of vowels in the 2 nd and 3 rd syllables of target words show that focus was clearly indicated through increased F0, duration, and RMS energy in focused words compared to unfocused words.However, a more finegrained focus structure between individual focus types was not distinguished.Lastly, evidence for stress was inconsistent across syllables and word classes, although F0 was identified as the most reliable correlate of stress in statives, and spectral tilt for both statives and verbs.

  PublisherOA PDFDOI

• Articulatory Dynamics of Quantity and Stress in Estonian Prosody

  2026-05-14

  articleOpen access1st authorCorresponding

  The Estonian ternary quantity system produces kinematic patterns that resemble stress, with longer, larger, and faster gestures in phonologically long vowels and their neighboring consonants.However, it remains unclear to what extent these effects reflect quantity rather than stress, since previous research has examined only quantity contrasts in word-initial syllables, the locus of stress in the native lexicon.This co-occurrence is thought to license an inverse temporal relationship between the stressed syllable and the following unstressed one, forming a metrical foot.Using electromagnetic articulography (EMA), we investigate quantity-stress interactions by (a) comparing stressed and unstressed syllables differing in vowel quantity word-initially and word-medially, and (b) probing the inverse timing pattern across a range of foot structures.Our analysis focuses on onset consonant gestures from eight native speakers.Results show that vowel quantity and stress share kinematic correlates, both shaping supra-laryngeal articulation, but do so with distinct temporal signatures.Quantity effects arise early and spill into overlapping consonant gestures, whereas stress effects emerge later and extend into post-tonic material.These patterns produce inverse timing relations without requiring the foot as their domain, instead suggesting partially overlapping articulatory domains for the two functions and motivating a mu-gesture account of their coordination.

  PublisherOA PDFDOI

• Phonetic encoding of focus structure in Taiwan Mandarin: Evidence from electromagnetic articulography

  The Journal of the Acoustical Society of America · 2025-10-01

  articleSenior author

  Focus is often marked prosodically, highlighting information as new, important, or contrastive within discourse. In stress-accent languages like English and German, focus is typically realized through pitch accents on stressed syllables, along with increased pitch, intensity, and duration. Articulatory correlates include gestures that are longer, larger, and faster, and these effects tend to scale with focus type. In tone languages such as Mandarin Chinese, however, pitch conveys both lexical tone and intonation, and focus is marked not by pitch accents but by pitch range expansion within the focused word. Some recent findings suggest that Mandarin focus may also involve enhanced articulatory effort, implying a possible hierarchical focus structure similar to that found in stress-accent languages—though articulatory evidence remains limited. This study investigates articulatory correlates of focus in Taiwan Mandarin, a syllable-timed tone language, using Electromagnetic Articulography (EMA). Target stimuli consisted of monosyllabic /ma/ sequences with each of the four lexical tones, elicited in five focus conditions: broad, narrow, contrastive, pre-focal, and post-focal. Tokens were embedded phrase-medially. Data collection is complete, and analysis of both articulatory gestures and F0 contours is underway. Findings will inform ongoing debates about the interaction of tone, intonation, and prosodic prominence in tone languages.

  PublisherDOI

• Kinematic signatures of ternary quantity in Estonian prosodic structure

  The Journal of the Acoustical Society of America · 2025-10-01

  article1st authorCorresponding

  This study investigates the kinematic correlates of Estonian's phonemic length system, focusing on how foot-level prosodic structure interacts with quantity distinctions operative at the segment and syllable levels. Estonian is typologically rare in exhibiting a three-way quantity contrast (short, long, overlong) that spans segments, syllables, and feet. While this contrast is phonologically restricted to stressed syllables, it has systematic timing effects on adjacent unstressed syllables within the foot. Using Electromagnetic Articulography (EMA), we examine how these phonemic length categories are reflected in articulatory kinematics—the duration, displacement, and velocity of constriction gestures—across different foot types (disyllabic versus trisyllabic; primary versus secondary). Data were collected from 20 native speakers producing two-, three-, and four-syllable words with initial vowels varying in quantity (V, VV, VVV), embedded in frame sentences with controlled prosodic environments. We assess how kinematic profiles vary with segmental quantity, foot structure, and stress distribution, and compare these patterns to those observed for stress and accent in other languages. This work contributes to a dynamical systems perspective on prosody, treating speech rhythm as emerging from interacting oscillatory systems across multiple temporal scales. The findings provide new insight into how Estonian’s unique prosodic system is implemented in the articulatory domain.

  PublisherDOI

• Edge-prominence in Seoul Korean: Articulatory scope of focus and dephrasing

  The Journal of the Acoustical Society of America · 2025-10-01

  articleSenior author

  This study examines the articulatory correlates of prosodic prominence and phrasing in Seoul Korean, an edge-prominence language where phrasal prominence aligns with the left edge of Accentual Phrases (APs). Using Electromagnetic Articulography (EMA), we analyzed the constriction gestures of /m/ and /n/ in the test word minami, produced under three focus conditions: focused (AP-initial), unfocused (pre-focal AP-initial), and dephrased (post-focal AP-medial). Kinematic measures—gesture duration, displacement, and peak velocity—were extracted and analyzed using linear mixed-effects modeling. Results showed that gestures in focused positions were generally longer, larger, and faster than those in unfocused and dephrased conditions, suggesting that prosodic focus enhances articulatory strength beyond the phrase-initial syllable. However, gestures in dephrased conditions did not show clear articulatory reduction; instead, they were comparable to those in unfocused positions. These findings suggest that while focus induces articulatory strengthening in Seoul Korean—similar to head-prominence languages—dephrasing may primarily involve tonal rather than articulatory weakening. This study advances our understanding of how prosodic prominence and phrasing interact at the phonetics-prosody interface in Korean. An accompanying perception experiment is underway, and preliminary results from that study will also be presented.

  PublisherDOI

• Kinematic encoding of focus and edge-prominence in Seoul Korean

  The Journal of the Acoustical Society of America · 2025-09-01

  articleSenior author

  Articulatory gestures under phrasal prominence undergo strengthening, becoming longer, larger, and faster. Limited research, mainly on head-prominence languages, shows that prominence-induced strengthening interacts with focus structure, increasing gradually across focus types. However, it is unclear how focus structure is encoded in edge-prominence systems. Here, we examine Seoul Korean, an edge-prominence language, in which the focused word is known to start an accentual phrase (AP) and exhibits prominence-induced strengthening, while the post-focal items are dephrased. Analyses of kinematic duration, displacement, and velocity, examine degree of strengthening on focused AP-initial gestures and/or dephrasing on initial gestures in the first post-focal word. Results show that focused AP-initial strengthening reflects focus structure, although kinematic dimensions differ in the number of focus types they distinguish. Yet, the order of encoded types remains consistent and similar to that found in head-prominence languages. Post-focally, there is durational evidence of dephrasing only after contrastive focus and its reach is constrained by the number of intervening syllables. Instead, the other focus types exert strengthening on the onset of the post-focal word, suggesting focus-induced spillover effects that cross-word boundaries. These findings support the view that prominence is organized as a hierarchical structure, with its levels reflecting different focus types.

  PublisherDOI

• Phrase boundaries lacking word prosody: An articulatory investigation of Seoul Korean

  The Journal of the Acoustical Society of America · 2024-05-01 · 3 citations

  articleSenior author

  This electromagnetic articulography study explores the kinematic profile of Intonational Phrase boundaries in Seoul Korean. Recent findings suggest that the scope of phrase-final lengthening is conditioned by word- and/or phrase-level prominence. However, evidence comes mainly from head-prominence languages, which conflate positions of word prosody with positions of phrasal prominence. Here, we examine phrase-final lengthening in Seoul Korean, an edge-prominence language with no word prosody, with respect to focus location as an index of phrase-level prominence and Accentual Phrase (AP) length as an index of word demarcation. Results show that phrase-final lengthening extends over the phrase-final syllable. The effect is greater the further away that focus occurs. It also interacts with the domains of AP and prosodic word: lengthening is greater in smaller APs, whereas shortening is observed in the initial gesture of the phrase-final word. Additional analyses of kinematic displacement and peak velocity revealed that Korean phrase-final gestures bear the kinematic profile of IP boundaries concurrently to what is typically considered prominence marking. Based on these results, a gestural coordination account is proposed, in which boundary-related events interact systematically with phrase-level prominence as well as lower prosodic levels, and how this proposal relates to the findings in head-prominence languages is discussed.

  PublisherDOI

• Focus structure and articulatory strengthening in Seoul Korean

  2024-06-30

  articleSenior author
  PublisherDOI

Frequent coauthors

• Mark Tiede

  Software (Spain)

  10 shared

• Louis Goldstein

  8 shared

• Ji-Young Jang

  Hanyang University

  6 shared

• Christine Mooshammer

  Humboldt-Universität zu Berlin

  6 shared

• Ioana Chițoran

  5 shared

• Jelena Krivokapić

  5 shared

• Karen Tsai

  University of California, Santa Barbara

  5 shared

• D. H. Whalen

  City University of New York

  4 shared