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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Transkranijinės magnetinės stimuliacijos įtaka galvos smegenų bioelektriniam aktyvumui / Effects of transcranial magnetic stimulation on bioelectrical brain activity

Vištartaitė, Giedrė 27 June 2014 (has links)
Šio darbo metu tirta skirtingų rTMS parametrų įtaka galvos smegenų bioelektriniam aktyvumui. Atlikus EEG duomenų spektrinę analizę, pademonstruota, jog aukšto dažnio rTMS virš KPFDLŽ, skirtingai nuo žemo dažnio rTMS virš DPFDLŽ, stimuliuojant aštuoniukės formos rite, statistiškai patikimai padidina alfa bangų dažnių diapazono absoliučią galią dešiniajame pusrutulyje. Paminėtina ir tai, kad po gydymo kurso rTMS aštuoniukės formos rite Kleino protokolu, skirtingai nei klasikiniu protokolu, frontalinėje srityje alfa bangų dažnio diapazone statistiškai reikšmingai sumažėja (F7-F8)/(F7+F8) asimetrijos koeficientas. Svarbu pažymėti, jog po rTMS stimuliacijos apvalia rite, palyginus su stimuliacija aštuoniukės formos rite, registruojami labiau išplitę, sudėtingesni smegenų bioelektrinio aktyvumo pokyčiai. / Recently rTMS emerged as a new clinical tool for the treatment of major depressive disorder. rTMS is noninvasive and easily tolerated method that is able to alter bioelectrical brain activity. This phenomenon is achieved by using alternating magnetic fields to induce electric currents in cortical tissue. Nowadays it is widelly accepted that lateralized alterations in brain activity might play a role in depressive symptoms. It has been found that major depressive disorder patients exhibit greater right frontal activity in contrast to left frontal hypoactivation (it should be noted, that cortical activity is inversely related with alpha power). Therefore rTMS is a potential method that can help to re-eastablish normal brain activity. In this study we examined effects of different rTMS parameters (protocols and stimulation coils) on bioelectrical brain activity modulation in patients with the treatment resistant major depressive disorder. It was shown that 10 Hz stimulation with the figure-eight coil over the left prefrontal area increases alpha power in the right hemisphere. In addition, it was demonstrated that 1 Hz stimulation over the left prefrontal cortex changes frontal alpha asymmetry. It should be underlined, that there appears to be no significant difference in clinical efficacy between the two protocols. It was also demonstrated that changes in frontal alpha asymmetry tend to correlate with the outcome of the treatment. Furthermore, it was shown that stimulation with... [to full text]
2

Reliatyviosios ir absoliučiosios solmizacijos sistemų pasirinkimo priežastys muzikos pedagogikoje / Reasons of choosing relative and absolute systems of solmisation in the pedagogics of music

Labanauskaitė, Ernesta 24 September 2008 (has links)
Muzikinės klausos ugdymas – tiek absoliučios, tiek reliatyvios solmizacijos sistemų objektai. Jis abiem solmizacijos sistemoms yra vienodas: pastovūs ir nepastovūs laipsniai, gama (kaip mažoro, minoro dermės išraiška), intervalai, akordai ir t.t. Esminis skirtumas tarp absoliučios ir realiatyvios sistemos yra mokomosios medžiagos, mokymo turinio apimtyje. Šiuo darbu nesiūloma taikyti vieną iš sistemų. Tai kiekvieno muzikos pedagogo apsisprendimas. Tačiau jis turi būti apgalvotas, motyvuotas ir sąmoningas. Svarbus vaidmuo, lemiantis sėkmingą vaikų muzikinę veiklą, tenka šiam darbui tinkamai pasirengusiems muzikos mokytojams. Kiekvienas pedagogas turi gerai susipažinti tiek su reliatyvia, tiek su absoliučia solmizacijos sistema, nes nėra vieningos nuomonės dėl abiejų sistemų privalumų ir trūkumų. / Development of musical hearing is the object of both absolute and relative systems of solmisation. It is the same for both systems of solmisation: constant and unconstant degrees, scale (as the expression of major and minor codes), intervals, chords and so on. The main difference between absolute and relative systems is in the extent of teaching material and teaching content. This paper does not aim at the proposal of one of these systems. It is the decision of each teacher of music. However, it must be thought over, motivated and made deliberately. Teachers well-prepared for this work play a very important, role in the successful musical activity of children. Each teacher must be well acquainted both with relative and absolute systems of solmisation as there is no unanimuos opinion concerning advantages and drawbacks of each of them.

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