Tongue Movement in the Elderly

为了研究舌突上下两种频率恒定的舌突运动，采用超声系统对青年和老年人进行了观察。在运动模式下，超声记录仪根据节拍器记录上下运动。比较两组患者舌部的运动节奏和运动速度。主要发现有：1。采用5mhz超声凸换能器和运动模式观察的超声系统在上下运动时舌面矢状面有清晰的痕迹。老年人的上下运动节奏比年轻人更为不规则。老年人舌上、舌下运动速度明显降低（p<0.01）。老年人运动速度不同，速度变化不明显。本研究结果显示，老年人的口腔运动行为不同于年轻人。

In order to investigate tongue shill upward and downward tongue movements with two constant frequencies were observed by using an ultrasound system in young and elderly adults. Upward and downward movements in accordance with a metronome were recorded by ultrasono-recorder from the motion-mode.Movement rhythm and movement velocity of the tongue were compaired in the two age groups.The main findings were:1. The ultrasound system with 5 MHz ultrasound convex transducer and motion-mode observation produced clear traces of the tongue surfaces in the sagital plane during upward and downward movements.2. Upward and downward movement rhythms in the elderly were more irregular than those of young adults.3. Velocity of tongue upward and downward movements were statistically decreased in the elderly (p<0.01). velocity did not clearly change if the movement speed was different in the elderly.Results of this study revealed that oral motor behaviour in the elderly differed from that of young adults.