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Träfflista för sökning "hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Oto rhino laryngologi) "

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1.
  • Löfqvist, Anders (författare)
  • Vowel-related tongue movements in speech: Straight or curved paths? (L).
  • 2011
  • Ingår i: The Journal of the Acoustical Society of America. - : American Institute of Physics (AIP). - 1520-8524. ; 129:3, s. 1149-1152
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper examines tongue movements between the two vowels in sequences of vowel-labial consonant-vowel, addressing the question whether the movement is a straight line or a curved path. Native speakers of Japanese and Italian served as subjects. The linguistic material consisted of words where the bilabial consonant was either long or short. The inclusion of words with different consonant lengths was motivated by earlier findings that the tongue movement is often longer when the consonant is long, which may be due to a more curved movement path. Tongue movements were recorded using a three-transmitter magnetometer system. To assess the movement path, the movement magnitude was calculated in two ways, as a straight line, the Euclidean distance, and as the actual path, obtained by summing the individual Euclidean distances between successive samples from movement onset to offset. The ratio between the path and the Euclidean distance is 1 when the movement is a straight line and greater than 1 when the path is curved. Results show that in virtually all 21 cases examined the ratio was very close to 1 and in most cases 1.2 or less. There was no reliable influence of consonant length on the ratio.
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6.
  • Lyberg Åhlander, Viveka, et al. (författare)
  • Hoarseness as a Sign of Possible Nonspecific Mucosal Hyperreactivity in Vocal Tract.
  • 2009
  • Ingår i: Journal of voice : official journal of the Voice Foundation. - : Elsevier. - 1557-8658. ; 23, s. 707-715
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of the present paper was to evaluate the possible impact of methacholine challenge on the voice and vocal tract in 10 patients reporting hoarseness due to presumable hyperreactivity to some environmental factors. Ten age and gender-matched healthy subjects served as controls. Methacholine was used for hypersensitivity challenge and saline solution (0.9% NaCl) as control substance. Subjects were examined on two separate challenge occasions testing either methacholine in increasing doses (3, 6, 12 mg) or NaCl. Voice recordings, videolaryngoscopy, and measurement of nasal secretion were performed before and after each sniffing session. Subjective complaints were documented. Data were statistically analyzed with three-way analysis of variance and group comparisons performed. Perceptual analysis of voice recordings showed an increase of the grade of voice disorder in patients after exposure to both substances. Moreover, one of the patients became aphonic and another severely dysphonic after NaCl. No voice quality changes were detected in controls. The videolaryngoscopy findings divergent from normal did not increase in any group. Nasal secretion was significantly higher after sniffing of methacholine than NaCl in both groups. The frequency of subjective complaints was equal in both groups after both substances. However, there was a qualitative difference in the character of the symptoms: the patients complained of throat, vocal, and nasal symptoms whereas the controls complained exclusively of nasal symptoms. The study supports the view that vocal dysfunction after exposure to non-specific environmental irritating factors may be triggered mainly by emotional mechanisms such as off-warding reaction or dissociative disorder.
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10.
  • Ahlsen, E, et al. (författare)
  • Språk och språklig kommunikation
  • 2007
  • Ingår i: Logopedi. - : Studentlitteratur AB. - 9789144038865 ; , s. 51-68, s. 51-69
  • Bokkapitel (övrigt vetenskapligt)
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