Original Research ARTICLE
Noggin Nodding: Head Movement Correlates with Increased Effort in Accelerating Speech Production Tasks
- 1Haskins Laboratories, United States
- 2Department of German Studies and Linguistics, Humboldt University of Berlin, Germany
- 3Department of Linguistics, University of Southern California, United States
Movements of the head and speech articulators have been observed in tandem during an alternating word pair production task driven by an accelerating rate metronome. Word pairs contrasted either onset or coda dissimilarity with same word controls. Results show that as production effort increased so did speaker head nodding, and that nodding increased abruptly following errors. More errors occurred under faster production rates, and in coda rather than onset alternations. The greatest entrainment between head and articulators was observed at the fastest rate under coda alternation. Neither jaw coupling nor imposed prosodic stress were observed to be primary drivers of head movement. In alternating pairs nodding frequency tracked the slower alternation rate rather than the syllable rate, interpreted as recruitment of additional degrees of freedom to stabilize the alternation pattern under increasing production rate pressure.
Keywords: speech production, speech errors, head movement, EMA, entrainment, Speech kinematics
Received: 29 Apr 2019;
Accepted: 17 Oct 2019.
Copyright: © 2019 Tiede, Mooshammer and Goldstein. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Dr. Mark K. Tiede, Haskins Laboratories, New Haven, United States, firstname.lastname@example.org