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  • 1
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2016
    In:  Journal of the Acoustical Society of America Vol. 139, No. 4_Supplement ( 2016-04-01), p. 2221-2221
    In: Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 139, No. 4_Supplement ( 2016-04-01), p. 2221-2221
    Abstract: Electromagnetic articulography (EMA) measurements of the movements of articulator flesh points have predominantly been used to investigate kinematics of individual points and/or coordinative phasing between them. Such limited use of EMA data is in fact wasteful of information. In this preliminary report we introduce two representations of EMA data: one is a representation of lingual configuration derived from three individual flesh points on the tongue, and the other is a representation of the vocal tract configuration information based on a lower-dimensional representation of Euclidean distances between EMA articulatory points. The motivation is to maximize the use of information in the original EMA data and measurements in a way that allows for the representation of tongue shaping and vocal tract configuration, thereby maximizing the use of information available from EMA and basic EMA measurements. Implications of such representations and their patterning will be discussed in the light of speech production dynamics as functions of speech rate and categorical emotions expressed in speech. [Work supported by NIH DC03172 and NSF IIS-1116076.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2016
    detail.hit.zdb_id: 1461063-2
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  • 2
    Online Resource
    Online Resource
    Elsevier BV ; 1998
    In:  Journal of Phonetics Vol. 26, No. 2 ( 1998-04), p. 173-199
    In: Journal of Phonetics, Elsevier BV, Vol. 26, No. 2 ( 1998-04), p. 173-199
    Type of Medium: Online Resource
    ISSN: 0095-4470
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    Language: English
    Publisher: Elsevier BV
    Publication Date: 1998
    detail.hit.zdb_id: 1469783-X
    SSG: 7,11
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  • 3
    Online Resource
    Online Resource
    Elsevier BV ; 1996
    In:  Journal of Phonetics Vol. 24, No. 2 ( 1996-4), p. 209-244
    In: Journal of Phonetics, Elsevier BV, Vol. 24, No. 2 ( 1996-4), p. 209-244
    Type of Medium: Online Resource
    ISSN: 0095-4470
    RVK:
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    Language: English
    Publisher: Elsevier BV
    Publication Date: 1996
    detail.hit.zdb_id: 1469783-X
    SSG: 7,11
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  • 4
    Online Resource
    Online Resource
    Elsevier BV ; 2012
    In:  Journal of Phonetics Vol. 40, No. 3 ( 2012-5), p. 430-442
    In: Journal of Phonetics, Elsevier BV, Vol. 40, No. 3 ( 2012-5), p. 430-442
    Type of Medium: Online Resource
    ISSN: 0095-4470
    RVK:
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    Language: English
    Publisher: Elsevier BV
    Publication Date: 2012
    detail.hit.zdb_id: 1469783-X
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  • 5
    Online Resource
    Online Resource
    Elsevier BV ; 2014
    In:  Journal of Phonetics Vol. 42 ( 2014-01), p. 1-11
    In: Journal of Phonetics, Elsevier BV, Vol. 42 ( 2014-01), p. 1-11
    Type of Medium: Online Resource
    ISSN: 0095-4470
    RVK:
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    Language: English
    Publisher: Elsevier BV
    Publication Date: 2014
    detail.hit.zdb_id: 1469783-X
    SSG: 7,11
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  • 6
    Online Resource
    Online Resource
    Elsevier BV ; 1996
    In:  Journal of Phonetics Vol. 24, No. 2 ( 1996-4), p. 263-282
    In: Journal of Phonetics, Elsevier BV, Vol. 24, No. 2 ( 1996-4), p. 263-282
    Type of Medium: Online Resource
    ISSN: 0095-4470
    RVK:
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 1996
    detail.hit.zdb_id: 1469783-X
    SSG: 7,11
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  • 7
    Online Resource
    Online Resource
    Elsevier BV ; 2003
    In:  Journal of Phonetics Vol. 31, No. 2 ( 2003-4), p. 149-180
    In: Journal of Phonetics, Elsevier BV, Vol. 31, No. 2 ( 2003-4), p. 149-180
    Type of Medium: Online Resource
    ISSN: 0095-4470
    RVK:
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2003
    detail.hit.zdb_id: 1469783-X
    SSG: 7,11
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  • 8
    Online Resource
    Online Resource
    Wiley ; 2019
    In:  Magnetic Resonance in Medicine Vol. 82, No. 2 ( 2019-08), p. 600-613
    In: Magnetic Resonance in Medicine, Wiley, Vol. 82, No. 2 ( 2019-08), p. 600-613
    Abstract: To demonstrate a tagging method compatible with RT‐MRI for the study of speech production. Methods Tagging is applied as a brief interruption to a continuous real‐time spiral acquisition. Tagging can be initiated manually by the operator, cued to the speech stimulus, or be automatically applied with a fixed frequency. We use a standard 2D 1‐3‐3‐1 binomial SPAtial Modulation of Magnetization (SPAMM) sequence with 1 cm spacing in both in‐plane directions. Tag persistence in tongue muscle is simulated and validated in vivo. The ability to capture internal tongue deformations is tested during speech production of American English diphthongs in native speakers. Results We achieved an imaging window of 650‐800 ms at 1.5T, with imaging signal to noise ratio ≥ 17 and tag contrast to noise ratio ≥ 5 in human tongue, providing 36 frames/s temporal resolution and 2 mm in‐plane spatial resolution with real‐time interactive acquisition and view‐sharing reconstruction. The proposed method was able to capture tongue motion patterns and their relative timing with adequate spatiotemporal resolution during the production of American English diphthongs and consonants. Conclusion Intermittent tagging during real‐time MRI of speech production is able to reveal the internal deformations of the tongue. This capability will allow new investigations of valuable spatiotemporal information on the biomechanics of the lingual subsystems during speech without reliance on binning speech utterance repetition.
    Type of Medium: Online Resource
    ISSN: 0740-3194 , 1522-2594
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 1493786-4
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  • 9
    Online Resource
    Online Resource
    Wiley ; 2020
    In:  Magnetic Resonance in Medicine Vol. 84, No. 2 ( 2020-08), p. 838-846
    In: Magnetic Resonance in Medicine, Wiley, Vol. 84, No. 2 ( 2020-08), p. 838-846
    Abstract: To evaluate a novel method for real‐time tagged MRI with increased tag persistence using phase sensitive tagging (REALTAG), demonstrated for speech imaging. Methods Tagging is applied as a brief interruption to a continuous real‐time spiral acquisition. REALTAG is implemented using a total tagging flip angle of 180° and a novel frame‐by‐frame phase sensitive reconstruction to remove smooth background phase while preserving the sign of the tag lines. Tag contrast‐to‐noise ratio of REALTAG and conventional tagging (total flip angle of 90°) is simulated and evaluated in vivo. The ability to extend tag persistence is tested during the production of vowel‐to‐vowel transitions by American English speakers. Results REALTAG resulted in a doubling of contrast‐to‐noise ratio at each time point and increased tag persistence by more than 1.9‐fold. The tag persistence was 1150 ms with contrast‐to‐noise ratio 〉 6 at 1.5T, providing 2 mm in‐plane resolution, 179 frames/s, with 72.6 ms temporal window width, and phase sensitive reconstruction. The new imaging window is able to capture internal tongue deformation over word‐to‐word transitions in natural speech production. Conclusion Tag persistence is substantially increased in intermittently tagged real‐time MRI by using the improved REALTAG method. This makes it possible to capture longer motion patterns in the tongue, such as cross‐word vowel‐to‐vowel transitions, and provides a powerful new window to study tongue biomechanics.
    Type of Medium: Online Resource
    ISSN: 0740-3194 , 1522-2594
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 1493786-4
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  • 10
    Online Resource
    Online Resource
    American Speech Language Hearing Association ; 2019
    In:  Perspectives of the ASHA Special Interest Groups Vol. 4, No. 2 ( 2019-04-15), p. 411-420
    In: Perspectives of the ASHA Special Interest Groups, American Speech Language Hearing Association, Vol. 4, No. 2 ( 2019-04-15), p. 411-420
    Abstract: As increasing amounts and types of speech data become accessible, health care and technology industries increasingly demand quantitative insight into speech content. The potential for speech data to provide insight into cognitive, affective, and psychological health states and behavior crucially depends on the ability to integrate speech data into the scientific process. Current engineering methods for acquiring, analyzing, and modeling speech data present the opportunity to integrate speech data into the scientific process. Additionally, machine learning systems recognize patterns in data that can facilitate hypothesis generation, data analysis, and statistical modeling. The goals of the present article are (a) to review developments across these domains that have allowed real-time magnetic resonance imaging to shed light on aspects of atypical speech articulation; (b) in a parallel vein, to discuss how advancements in signal processing have allowed for an improved understanding of communication markers associated with autism spectrum disorder; and (c) to highlight the clinical significance and implications of the application of these technological advancements to each of these areas. Conclusion The collaboration of engineers, speech scientists, and clinicians has resulted in (a) the development of biologically inspired technology that has been proven useful for both small- and large-scale analyses, (b) a deepened practical and theoretical understanding of both typical and impaired speech production, and (c) the establishment and enhancement of diagnostic and therapeutic tools, all having far-reaching, interdisciplinary significance. Supplemental Material https://doi.org/10.23641/asha.7740191
    Type of Medium: Online Resource
    ISSN: 2381-4764 , 2381-473X
    Language: English
    Publisher: American Speech Language Hearing Association
    Publication Date: 2019
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