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- Hertegård, S., et al.
(författare)
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Botulinum toxin injections for essential voice tremor
- 2000
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Ingår i: Annals of Otology, Rhinology and Laryngology. - : SAGE Publications. - 0003-4894 .- 1943-572X. ; 109:2, s. 204-209
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Tidskriftsartikel (refereegranskat)abstract
- Fifteen patients, 13 women and 2 men, with a mean age of 72.7 years (56 to 86 years) and a clinical diagnosis of essential voice tremor, were treated with botulinum injections to the thyroarytenoid muscles, and in some cases, to the cricothyroid or thyrohyoid muscles. Evaluations were based on subjective judgments by die patients, and on perceptual and acoustic analysis of voice recordings. Subjective evaluations indicated that the treatment had a beneficial effect in 678 of the patients. Perceptual evaluations showed a significant decrease in voice tremor during connected speech (p < .05). Acoustic analysis showed a nearly significant decrease in the fundamental frequency variations (p = .06) and a significant decrease in fundamental frequency during sustained vowel phonation (p <. 01). The results of perceptual evaluation coincided most closely with the subjective judgments. It was concluded that the treatment was successful in 50% to 65% of the patients, depending on the method of evaluation.
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- Kish, L.B., et al.
(författare)
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In situ electrical transport measurements and self-organization in gold nanoparticle films during and after deposition
- 2001
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Ingår i: Surface & Coatings Technology. - 0257-8972 .- 1879-3347. ; 142-144, s. 1088-1093
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Tidskriftsartikel (refereegranskat)abstract
- In the first part of this paper, a new method is shown which is able to predict the particle size of conductive nanoparticle films in situ, during deposition. The method is used for the measurement of the time-derivative of conductance fluctuations during deposition. The second part of the paper deals with in situ conductance measurements on gold films during deposition. During the measurement, various electrical fields have been applied in order to study the possible influence of the field magnitude on the film formation. The observed effects have been interpreted by the biased percolation model. A possible technological application of the observed phenomenon is the fabrication of nanoparticle films with controlled disorder, e.g. in chemical sensors. © 2001 Elsevier Science B.V. All rights reserved.
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- Pulakka, H., et al.
(författare)
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Analysis of the voice source in different phonation types : Simultaneous high-speed imaging of the vocal fold vibration and glottal inverse filtering
- 2004
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Ingår i: 8th International Conference on Spoken Language Processing, ICSLP 2004. - : International Speech Communication Association. ; , s. 1121-1124
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Konferensbidrag (refereegranskat)abstract
- Glottal flow waveforms estimated by inverse filtering acoustic speech pressure signals were compared to glottal area functions obtained by digital high-speed imaging of the vocal fold vibration. Speech data consisted of breathy, normal and pressed phonations produced by two male and one female subjects. The results yield both qualitative and quantitative information about the relationship between the glottal flow and the corresponding area function. It was shown, for example, that a distinct knee in the glottal flow waveform in the opening phase corresponds to the abrupt opening of the vocal folds in normal and pressed phonation. In addition, the obtained quantitative data corroborates known theoretical considerations according to which the shape of the glottal flow is more asymmetric than the corresponding area function.
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