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Reduction of Speech Signal Deformation in Patients after Nasal Septum Surgery (Septolplasty)

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Konior M., Kłaczyński M., Wszołek W.

Acta Physica Polonica A

2011

vol. 119

issue 6A

1000-1004

Nasal blockage belongs to the most common symptoms of nasal diseases in vocal tract area. At the same frequency there appear acoustic symptoms, existing as the change of human voice color. Vocal and articulation disorders of the ear, nose ane throat are usually observed in the form of closed rhinolalia and this observation can be performed both by patients and other listeners as well. Nasal polyps and nasal septum deviation are frequent reason of nasal blockage connected in consequence with decreased nasal ventilation. One of the main principles of the surgical treatment performed in mentioned situations is the restoration of nasal patency. The evaluation of the influence of nasal surgery on intensification of acoustic symptoms depends on verification of parameters of the human speech signal, so it was necessary to apply objective methods. That allowed to combine results of acoustic analysis with patient's subjective feeling and rhinomanometric evaluation of nasal patency. The main purpose of this research was to objectively evaluate the influence of surgical treatment improving nasal patency on deformation of the voice of operated patients.

The long-term effect of cadmium exposure through food on the postnatal development of the bank vole (Clethrionomys glareolus Schreber 1780).

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Bialonska D., Zakrzewska M., Sawicka-Kapusta K., Konior M.

Folia Biologica

2002

vol. 50

issue 3-4

203-209

Cadmium is well known for its toxicity to the animal body. However, its effect on pregnancy and the development of young animals is still not well understood. This study examined such effects, using bank voles captured from the wild to make the results closer to those which could be expected in the natural environment. One group of animals was fed 7mug g-1 cadmium in the food, a second 35 mug g-1, and a third no cadmium, as a control. The concentrations of cadmium in the whole bodies of young bank voles were determined on the 3rd, 5th, or 10th day of life. The cadmium level in the bodies of animals exposed to 35 mug g-1 of cadmium was significantly higher than in those from either the control group or the group receiving 7 mug g-1 of cadmium, which did not differ from each other. The cadmium level did not change with animal age in any of the study groups. Concentrations of Zn, Cu, and Fe were also determined in the whole body of young animals, as cadmium is known to disturb the metabolism of these essential metals through antagonistic activity. Both Cu and Fe levels were negatively correlated with cadmium concentrations, while a positive correlation was found between zinc and cadmium in the young animal bodies. Also found was higher offspring mortality in the group receiving 35 mug g-1 of cadmium in food. There was no difference in young animal body weight between the study groups.

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1 Acta Physica Polonica A

1 Folia Biologica

1 2011

1 2002

2 Konior M.

1 Bialonska D.

1 Kłaczyński M.

1 Sawicka-Kapusta K.

1 Wszołek W.

1 Zakrzewska M.

Search results

Reduction of Speech Signal Deformation in Patients after Nasal Septum Surgery (Septolplasty)

The long-term effect of cadmium exposure through food on the postnatal development of the bank vole (Clethrionomys glareolus Schreber 1780).