Auditory-Motor Perturbations of Voice Fundamental Frequency: Feedback Delay and Amplification

Autor/inn/en	Weerathunge, Hasini R.; Abur, Defne; Enos, Nicole M.; Brown, Katherine M.; Stepp, Cara E.
Titel	Auditory-Motor Perturbations of Voice Fundamental Frequency: Feedback Delay and Amplification
Quelle	In: Journal of Speech, Language, and Hearing Research, 63 (2020) 9, S.2846-2860 (15 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Weerathunge, Hasini R.) ORCID (Abur, Defne) ORCID (Enos, Nicole M.) ORCID (Brown, Katherine M.) ORCID (Stepp, Cara E.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Acoustics; Articulation (Speech); Auditory Stimuli; Young Adults; Auditory Perception; Feedback (Response) + Suchen Sie Ihr Suchwort? Akustik; Auditive Stimulation; Young adult; Junger Erwachsener; Auditive Wahrnehmung; Akustische Wahrnehmung
Abstract	Purpose: Gradual and sudden perturbations of vocal fundamental frequency (f[subscript o]), also known as adaptive and reflexive f[subscript o] perturbations, are techniques to study the influence of auditory feedback on voice f[subscript o] control mechanisms. Previous vocal f[subscript o] perturbations have incorporated varied setup-specific feedback delays and amplifications. Here, we investigated the effects of feedback delays (10--100 ms) and amplifications on both adaptive and reflexive f[subscript o] perturbation paradigms, encapsulating the variability in equipment-specific delays (3--45 ms) and amplifications utilized in previous experiments. Method: Responses to adaptive and reflexive f[subscript o] perturbations were recorded in 24 typical speakers for four delay conditions (10, 40, 70, and 100 ms) or three amplification conditions (-10, +5, and +10 dB relative to microphone) in a counterbalanced order. Repeated-measures analyses of variance were carried out on the magnitude of f[subscript o] responses to determine the effect of feedback condition. Results: There was a statistically significant effect of the level of auditory feedback amplification on the response magnitude during adaptive f[subscript o] perturbations, driven by the difference between +10- and -10-dB amplification conditions (hold phase difference: M = 38.3 cents, SD = 51.2 cents; after-effect phase: M = 66.1 cents, SD = 84.6 cents). No other statistically significant effects of condition were found for either paradigm. Conclusions: Experimental equipment delays below 100 ms in behavioral paradigms do not affect the results of f[subscript o] perturbation paradigms. As there is no statistically significant difference between the response magnitudes elicited by +5- and +10-dB auditory amplification conditions, this study is a confirmation that an auditory feedback amplification of +5 dB relative to microphone is sufficient to elicit robust compensatory responses for f[subscript o] perturbation paradigms. (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