{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T00:36:50Z","timestamp":1761007010093,"version":"build-2065373602"},"reference-count":13,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[1992,11,1]],"date-time":"1992-11-01T00:00:00Z","timestamp":720576000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Otolaryngol.--head neck surg."],"published-print":{"date-parts":[[1992,11]]},"abstract":"<jats:p>Pitch perturbation is a measure of the cycle\u2010to\u2010cycle variation in vocal fold vibration. Perturbation can be assessed by means of electroglottographic or acoustic signals. The purpose of this study was to determine if these two analysis techniques are equivalent measures. The Laryngograph, an electroglottograph, and the Visi\u2010Pitch, an acoustic analyzer, were used to measure pitch perturbation in 80 dysphonic subjects. Both instruments use Koike's formula to calculate relative average perturbation. While intrasubject variability appeared erratic, statistical analysis of intersubject data indicated that the two instruments provided an equivalent measure of pitch perturbation.<\/jats:p>","DOI":"10.1177\/019459989210700502","type":"journal-article","created":{"date-parts":[[2015,11,25]],"date-time":"2015-11-25T06:47:04Z","timestamp":1448434024000},"page":"617-621","source":"Crossref","is-referenced-by-count":2,"title":["Comparison of Electroglottographic and Acoustic Analysis of Pitch Perturbation"],"prefix":"10.1002","volume":"107","author":[{"given":"Gary R.","family":"LaBlance","sequence":"first","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Saint Louis University St. Louis Missouri"},{"name":"Department of Communication Disorders Saint Louis University St. Louis Missouri"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael D.","family":"Maves","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Saint Louis University St. Louis Missouri"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Theresa M.","family":"Scialfa","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Saint Louis University St. Louis Missouri"},{"name":"Department of Communication Disorders Saint Louis University St. Louis Missouri"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claudia M.","family":"Eitnier","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Saint Louis University St. Louis Missouri"},{"name":"Department of Communication Disorders Saint Louis University St. Louis Missouri"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karen F.","family":"Steckol","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Saint Louis University St. Louis Missouri"},{"name":"Department of Communication Disorders Saint Louis University St. Louis Missouri"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[1992,11]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"191","volume-title":"Understanding voice problems: a physiological perspective for diagnosis and treatment.","author":"Colton RH","year":"1990"},{"key":"e_1_2_1_3_1","first-page":"170","volume-title":"Clinical measurement of speech and voice.","author":"Baken RJ","year":"1987"},{"key":"e_1_2_1_4_1","first-page":"19","volume-title":"Transcripts of the Eighth Symposium: Care of the Professional Voice (Part II)","author":"Baer T","year":"1979"},{"key":"e_1_2_1_5_1","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1007\/978-4-431-68358-2","volume-title":"Phonosurgery: theory and practice.","author":"Isshiki N","year":"1989"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1121\/1.1918465"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1121\/1.1912490"},{"key":"e_1_2_1_8_1","first-page":"17","article-title":"Application of some acoustic measures for the evaluation of laryngeal dysfunction","volume":"7","author":"Koike Y","year":"1973","journal-title":"Studio Phonologia"},{"issue":"338","key":"e_1_2_1_9_1","first-page":"1","article-title":"Some perceptual dimensions and acoustical correlates of pathologic voices","author":"Takahashi H","year":"1975","journal-title":"Acta Otolaryngologica"},{"key":"e_1_2_1_10_1","first-page":"124","volume-title":"Instrumentation.","author":"Decker TN","year":"1990"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1159\/000265797"},{"key":"e_1_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1159\/000265727"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1044\/jshr.2302.258"},{"key":"e_1_2_1_14_1","unstructured":"LaBlanceG MavesM EitnierC WiebergL.Efficacy of electroglottography in assessing vocal fold vibratory patterns. 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