Development of speech motor control: Lip movement variability.
(2011) In The Journal of the Acoustical Society of America 130(4).- Abstract
- This study examined variability of lip movements across repetitions of the same utterance as a function of age in Swedish speakers. Subjects were 37 typically developed Swedish children and adults (19 females, 18 males, aged 5-31 yr). Lip movements were recorded during 15-20 repetitions of a short Swedish phrase using articulography, with a sampling rate of 200 Hz. After correction for head movements, the kinematic records were expressed in a maxilla-based coordinate system. Movement onset and offset of the utterance were identified using kinematic landmarks. The Euclidean distance between receivers on the upper and lower lips was calculated and subjected to functional data analysis [Ramsay etal., J. Acoust. Soc. Am. 99, 3718-3727 (1996)]... (More)
- This study examined variability of lip movements across repetitions of the same utterance as a function of age in Swedish speakers. Subjects were 37 typically developed Swedish children and adults (19 females, 18 males, aged 5-31 yr). Lip movements were recorded during 15-20 repetitions of a short Swedish phrase using articulography, with a sampling rate of 200 Hz. After correction for head movements, the kinematic records were expressed in a maxilla-based coordinate system. Movement onset and offset of the utterance were identified using kinematic landmarks. The Euclidean distance between receivers on the upper and lower lips was calculated and subjected to functional data analysis [Ramsay etal., J. Acoust. Soc. Am. 99, 3718-3727 (1996)] to assess both temporal and spatial variabilities. Results show a decrease in both indices as a function of age, with a greater reduction of amplitude variability. [Work supported by grant 349-2007-8695 from the Swedish Research Council.]. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2200797
- author
- Löfqvist, Anders LU ; Frid, Johan and Schötz, Susanne
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of the Acoustical Society of America
- volume
- 130
- issue
- 4
- article number
- 2548
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- pmid:21974347
- ISSN
- 1520-8524
- DOI
- 10.1121/1.3655188
- language
- English
- LU publication?
- yes
- id
- 1762e693-198f-40fd-80b5-3a15c1c94546 (old id 2200797)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/21974347?dopt=Abstract
- date added to LUP
- 2016-04-04 09:43:57
- date last changed
- 2018-11-21 20:55:15
@article{1762e693-198f-40fd-80b5-3a15c1c94546,
abstract = {{This study examined variability of lip movements across repetitions of the same utterance as a function of age in Swedish speakers. Subjects were 37 typically developed Swedish children and adults (19 females, 18 males, aged 5-31 yr). Lip movements were recorded during 15-20 repetitions of a short Swedish phrase using articulography, with a sampling rate of 200 Hz. After correction for head movements, the kinematic records were expressed in a maxilla-based coordinate system. Movement onset and offset of the utterance were identified using kinematic landmarks. The Euclidean distance between receivers on the upper and lower lips was calculated and subjected to functional data analysis [Ramsay etal., J. Acoust. Soc. Am. 99, 3718-3727 (1996)] to assess both temporal and spatial variabilities. Results show a decrease in both indices as a function of age, with a greater reduction of amplitude variability. [Work supported by grant 349-2007-8695 from the Swedish Research Council.].}},
author = {{Löfqvist, Anders and Frid, Johan and Schötz, Susanne}},
issn = {{1520-8524}},
language = {{eng}},
number = {{4}},
publisher = {{American Institute of Physics (AIP)}},
series = {{The Journal of the Acoustical Society of America}},
title = {{Development of speech motor control: Lip movement variability.}},
url = {{http://dx.doi.org/10.1121/1.3655188}},
doi = {{10.1121/1.3655188}},
volume = {{130}},
year = {{2011}},
}