Role of tongue pressure production in oropharyngeal swallow biomechanics.
Role of tongue pressure production in oropharyngeal swallow biomechanics.
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DOI：
10.1002/phy2.167
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发表时间：
2013-11
影响因子：
2.5
通讯作者：
Inoue, Makoto
中科院分区：
文献类型：
--
作者：
Hori, Kazuhiro;Taniguchi, Hiroshige;Hayashi, Hirokazu;Magara, Jin;Minagi, Yoshitomo;Li, Qiang;Ono, Takahiro;Inoue, Makoto
舌头对包括吞咽在内的口面运动很重要。虽然许多研究都集中在舌头对上颚的压力，但其生理作用尚未得到充分评价。舌压的产生可能与吞咽相关器官有时间上的协调。本研究的目的是阐明舌压的生理机制，并探讨吞咽过程中舌压、舌骨上肌活动和视频荧光（VF）图像之间的时间关系。15名健康的年轻受试者参加了研究。舌压测量使用传感器片与五个通道，肌电图，VF同步记录在4毫升钡吞咽。比较了有和没有传感器片的VF图像中的吞咽行为。此外，从舌压，肌电图和VF测量的事件之间的时间关系进行了评估。VF图像上的吞咽行为不受传感器片放置的影响。硬腭后外侧点的舌压呈双相峰。在双相模式的第二个峰值期间，出现了具有双相模式的舌压产生。舌压的起始时间晚于舌骨运动的起始时间和肌电图的起始时间，且舌骨在上前位和复位时存在偏移。舌压力在前部区域的开始与舌骨轻微抬高的开始相关。舌压在后外侧点的偏移与舌骨在上向前位置的偏移具有强烈的时间锁定。本研究结果提示舌压的产生与吞咽相关器官的时间协调性。也就是说，舌压力是为了推进食团而产生的，并且与吞咽过程中舌骨的暂时运动密切相关。这些结果可能有助于阐明舌动力障碍的临床状态。
The tongue is important for orofacial movements, including swallowing. Although numerous studies have focused on tongue pressure against the palate, its physiological role has not been fully evaluated. The tongue pressure generation may have the temporal coordination with the swallowing relational organs. The aim of this study was to clarify the physiological mechanisms of tongue pressure and to investigate the temporal relationship among tongue pressure, supra-hyoid muscle activity, and videofluorographic (VF) images during swallowing. Fifteen healthy young subjects participated. Tongue pressure measured using a sensor sheet with five channels, electromyographic EMG, and VF was recorded synchronously during 4-ml barium swallowing. Swallowing behavior in VF images with and without the sensor sheet was compared. Furthermore, the temporal relationship between events measured from tongue pressure, EMG, and VF was evaluated. Swallowing behavior on VF images was not affected by placement of the sensor sheet. Tongue pressure at the posterio-lateral point of the hard palate tended to have biphasic peaks. Tongue pressure production with a monophasic pattern appeared during the same period as the second peak in the biphasic pattern. The onset of tongue pressure was later than the start of hyoid movement and onset of EMG, and offset was observed between the hyoid at the up-forward position and reposition. Onset of tongue pressure at the anterior area was correlated with the start of slight hyoid elevation. Offset of tongue pressure at the posterio-lateral points was strongly time locked with the hyoid at the up-forward position. The present results suggested the temporal coordination of tongue pressure generation with the swallowing-related organs. That is, the tongue pressure was produced for bolus propulsion, and was closely related to hyoid movement temporally during swallowing. These results may contribute to clarify the clinical state with the disorder of tongue kinetics.