A clinical research on articulation disorders after surgery on oral lesions. - A simultaneous analysis of tongue, lips and jaw movements during pronunciation -

为了解舌唇颌骨关节紊乱的动态变化，提出了一种利用16 mm同步高速电影摄影(Cine)、动态腭位摄影(DP)和声谱分析(SG)技术记录和分析舌、唇、颌骨关节运动的新方法。其方法是：在语音产生过程中，以每秒帧的速度拍摄面部位置标记物的正侧向图。同时对相同速度的DP和语音源进行录音。利用同步脉冲发生器，将发光二极管帧标记记录在电影胶片上，同时将噪声信号分别记录在记录磁带上。通过对正常受试者和半舌切除受试者发音/asa/和/ata/的动态分析，得到以下结果：1)正常受试者的下颌和舌头均通过/S发音，且下颌切牙点最接近受试者的中心咬合(咬合)。2)在正常受试者中。下巴仍在上升，超过了DP最大点。舌尖舌尖在下巴开始下降后从上颚松开。3)在半舌切除患者中，/t/的发音以嘴唇和腭舌接触的发音最低。4)在半切患者中，发出/S/时，摩擦音不仅是由腭舌接触产生的，而且是由两侧嘴唇之间的狭窄空间产生的，其中可理解性最高。5)提示塞音的代偿性发音比摩擦音的发音更困难。

A new method for recording and analyzing articulatory movements of tongue, lip and jaw utilizing synchronous high-speed 16mm cinematography(cine), dyn3mic palatography (DP) and soud spectrography (SG) was developed to clarify the dynamics of the articulation disorders to contribute to the diagnosis and treatment of it. The mcthod is as follws: frontal and lateral views of the facial position markers are filmed at the rate of 64 frame per second during speech production. DP at the same speed and speech soud are tape rcorded simultaneously. Utilizing synchronous pulse generator, light emitting diode frame markers are recorded on the cine film and noise signals are recorded on the recording tape, respectively, at the same time. The movements of the facial markers in cine are synchronezed with DP, according to each noise signals revealed on the.SG. The following results are obtained by analizing the dynamics during pronunciation of /asa/ and /ata/ by normal and hemiglossectomized subjects using this method: 1) In the normal subject, the jaw and tongue were both moving througb uttering /s/, and mandibular incisor point was closest to the centric occlulsion of the subject when the palatolingual conatact were maximaum(DP max.point). 2) in the normal subject. the jaw was still rising past the DP max.point. The tip of the tongue released from the palate after the jaw starting to go down. 3) In the hemiglossectomized patien, the plosion to pronounce /t/ of which the intelligibility was lowest level was produced by both lips and palatolingual contact. 4) In the hemigiossectomized patient, the a fricative was made not only by palatolingual contact but also by a narrow space between both lips during utterance of /s/ of which the intelligibilty was highest. 5) It was suggested that the production of the compensatory articulation for plosive sound was more difficult than for a fricative sound.