The Speech Focus Position Effect on Jaw–Finger Coordination in a Pointing Task
| Autor: | Jean-Luc Schwartz, Rafael Laboissière, Arturo Galvan, Amélie Rochet-Capellan |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Linguistics and Language Time Factors Adolescent Movement Speech recognition Deixis Language and Linguistics Task (project management) Fingers Speech and Hearing Nonverbal communication Phonetics Stress (linguistics) Humans Speech Language research Focus (computing) Communication business.industry Jaw Female business Psychology Psychomotor Performance Gesture |
| Zdroj: | Journal of Speech, Language, and Hearing Research. 51:1507-1521 |
| ISSN: | 1558-9102 1092-4388 |
| DOI: | 10.1044/1092-4388(2008/07-0173) |
| Popis: | Purpose This article investigates jaw–finger coordination in a task involving pointing to a target while naming it with a ˈCVCV (e.g., /ˈpapa/) versus CVˈCV (e.g., /paˈpa/) word. According to the authors' working hypothesis, the pointing apex (gesture extremum) would be synchronized with the apex of the jaw-opening gesture corresponding to the stressed syllable. Method Jaw and finger motions were recorded using Optotrak (Northern Digital, Waterloo, Ontario, Canada). The effects of stress position on jaw–finger coordination were tested across different target positions (near vs. far) and different consonants in the target word (/t/ vs. /p/). Twenty native Portuguese Brazilian speakers participated in the experiment (all conditions). Results Jaw response starts earlier, and finger–target alignment period is longer for CVˈCV words than for ˈCVCV ones. The apex of the jaw-opening gesture for the stressed syllable appears synchronized with the onset of the finger–target alignment period (corresponding to the pointing apex) for ˈCVCV words and with the offset of that period for CVˈCV words. Conclusions For both stress conditions, the stressed syllable occurs within the finger–target alignment period because of tight finger–jaw coordination. This result is interpreted as evidence for an anchoring of the speech deictic site (part of speech that shows) in the pointing gesture. |
| Databáze: | OpenAIRE |
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