高電圧X線撮影による発声時の喉頭及び下部共鳴腔の形態に関する研究
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概要
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Both sagittal and lateral high-voltage radiograms were taken in order to study morphologic changes of the soft part of larynx and the pharyngeal cavity in various conditions such as changes in pitch, register, force, and vocals.Twenty-five persons were tested, consisting of 8 vocalists (4 females and 4 males) and 17 ordinary persons (9 males and 8 females).The results obtained are as follows(1) The ventricle of larynx underwent the most conspicuous changes.a) The higher the pitch within the same register, the narrower the ventricle. In the chest voice register, however, the ventricle turned from narrow to wide and again to narrow as the pitch rose.b) At the same pitch, the ventricle proved always wider in the higher register.(2) a) Within the same register, the vocal cords were elongated as the pitch rose. But in the male falsetto voice register and the female head voice register, the length of the vocal cords remained constant.b) At the same pitch, the vocal cords did not differ in length in two different registers.(4) a) The higher the pitch within the same register, the higher the site of the larynx.b) At the same pitch, no difinite characteristics were noted of the site of the larynx in two adjoining registers.(4) Individual differences were noted to such an extent in the relation between the width of the pharyngeal cavity and the changes in pitch or register, that specific relationship was not observed.(5) The width of the ventricle of larynx and the pharyngeal cavity changed most remarkably in accordance with changes in force. However, the mode of the change was not specific.
- 社団法人 日本耳鼻咽喉科学会の論文