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This study aims to quantitatively index and compare complexity of vocal tract shaping due to lingual movement in individuals who have undergone glossectomy and typical speakers using real-time magnetic resonance imaging data and Principal Component Analysis. The data reveal that (i) the type of glossectomy undergone largely predicts the patterns in vocal tract shaping observed, (ii) gross forward and backward motion of the tongue body accounts for more change in vocal tract shaping than do subtler movements of the tongue (e.g., tongue tip constrictions) in patient data, and (iii) fewer vocal tract shaping components are required to account for the patients' speech data than typical speech data, suggesting that the patient data at hand exhibit less complex vocal tract shaping in the midsagittal plane than do the data from the typical speakers observed.<\/jats:p>","DOI":"10.1121\/10.0004789","type":"journal-article","created":{"date-parts":[[2021,6,22]],"date-time":"2021-06-22T19:07:31Z","timestamp":1624388851000},"page":"4437-4449","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":15,"title":["Complexity of vocal tract shaping in glossectomy patients and typical speakers: A principal component analysis"],"prefix":"10.1121","volume":"149","author":[{"given":"Christina","family":"Hagedorn","sequence":"first","affiliation":[{"name":"Linguistics, College of Staten Island\u2013City University of New York 1 , 2800 Victory Boulevard, Staten Island, New York 10314, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jangwon","family":"Kim","sequence":"additional","affiliation":[{"name":"Amazon Care 2 , 410 Terry Avenue North, Seattle, Washington 98109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Uttam","family":"Sinha","sequence":"additional","affiliation":[{"name":"Keck School of Medicine, University of Southern California 3 , 1975 Zonal Avenue, Los Angeles, California 90033, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Louis","family":"Goldstein","sequence":"additional","affiliation":[{"name":"Linguistics, University of Southern California 4 , 3601 Watt Way, Los Angeles, California 90089, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shrikanth S.","family":"Narayanan","sequence":"additional","affiliation":[{"name":"Viterbi School of Engineering, University of Southern California 5 , 3650 McClintock Avenue, Los Angeles, California 90089, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","published-online":{"date-parts":[[2021,6,22]]},"reference":[{"issue":"1","key":"2023080720034800400_c2","doi-asserted-by":"publisher","first-page":"39","DOI":"10.1007\/BF02911004","article-title":"Effective rehabilitation after partial glossectomy","volume":"54","year":"2002","journal-title":"Ind. 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