Functional Role of Temporal Patterning of Articulation in Speech Production: A Novel Perspective toward Global Timing-Based Motor Speech Assessment and Rehabilitation

Autor/inn/en	Rong, Panying; Heidrick, Lindsey
Titel	Functional Role of Temporal Patterning of Articulation in Speech Production: A Novel Perspective toward Global Timing-Based Motor Speech Assessment and Rehabilitation
Quelle	In: Journal of Speech, Language, and Hearing Research, 65 (2022) 12, S.4577-4607 (31 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Rong, Panying)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Articulation (Speech); Intelligibility; Neurological Impairments; Speech Impairments; Language Patterns; Speech Evaluation; Rehabilitation; Auditory Perception; Language Rhythm; Acoustics; Suprasegmentals; Cognitive Tests; Adults; Speech Language Pathology; Kansas + Suchen Sie Ihr Suchwort? Neurodegenerative Erkrankung; Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung; Sprachmodell; Sprachstruktur; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Sprachrhythmus; Kognitiver Fähigkeitstest
Abstract	Purpose: This study aimed to (a) relate temporal patterning of articulation to functional speech outcomes in neurologically healthy and impaired speakers, (b) identify changes in temporal patterning of articulation in neurologically impaired speakers, and (c) evaluate how these changes can be modulated by speaking rate manipulation. Method: Thirteen individuals with (ALS) and 10 neurologically healthy controls read a sentence 3 times, first at their habitual rate and then at a voluntarily slowed rate. Temporal patterning of articulation was assessed by 24 features characterizing the modulation patterns within (intra) and between (inter) four articulators (tongue tip, tongue body, lower lip, and jaw) at three linguistically relevant, hierarchically nested timescales corresponding to stress, syllable, and onset-rime/phoneme. For Aim 1, the features for the habitual rate condition were factorized and correlated with two functional speech outcomes--speech intelligibility and intelligible speaking rate. For Aims 2 and 3, the features were compared between groups and rate conditions, respectively. Results: For Aim 1, the modulation features combined were moderately to strongly correlated with intelligibility (R[superscript 2] = 0.51-0.53) and intelligible speaking rate (R[superscript 2] = 0.63-0.73). For Aim 2, intra-articulator modulation was impaired in ALS, manifested by moderate-to-large decreases in modulation depth at all timescales and cross-timescale phase synchronization. Interarticulator modulation was relatively unaffected. For Aim 3, voluntary rate reduction improved several intra-articulator modulation features identified as being susceptible to the disease effect in individuals with ALS. Conclusions: Disrupted temporal patterning of articulation, presumably reflecting impaired articulatory entrainment to linguistic rhythms, may contribute to functional speech declines in ALS. These impairments tend to be improved through voluntary rate reduction, possibly by reshaping the temporal template of motor plans to better accommodate the disease-related neuromechanical constraints in the articulatory system. These findings shed light on a novel perspective toward global timing-based motor speech assessment and rehabilitation. (As Provided).
Anmerkungen	American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01