東京都内一中学校生徒の音声に関する研究

概要

論文の詳細を見る
On 346 students of a junior high school in Tokyo, the authors made morphogical and phoniatric study with special reference to statistical difference between age and both sexes.It was noted that the mutation occurred in earlier period than previously reported and, in female students, the mutation was thought to occur prior to the menarche. It was further considered that the mutation could not be elicited only by morphological development of cartilagenous frame work of the larynx, but other developmental factors should play important roles in the mechanism of the mutation. The necessity of vocal hygene during the mutational period was particularly emphasized
社団法人日本耳鼻咽喉科学会の論文