Hirai T, Tanaka O, Koshino H, Yajima T
Department of Removable Prosthodontics, Higashi-Nippon-Gakuen University, School of Dentistry, Hokkaido, Japan.
J Prosthet Dent. 1991 Jun;65(6):840-4. doi: 10.1016/s0022-3913(05)80024-1.
In this investigation of motor skills of the tongue and age-related changes in motor behavior, upward and downward tongue movements with the teeth in centric occlusion and regulated by a metronome were recorded. The recordings were made by use of ultrasound diagnostic equipment with a 5 MHz electronic convex section scanning probe and a physiologic signal unit connected to a heart sound microphone in a group of young subjects and a group of older subjects. The results were as follows. (1) The system provided a useful method to evaluate motor skills of the tongue with sound signals showing clear images of the tongue surface and its movements. (2) The rhythm of tongue movements in older persons varied more than in younger persons. (3) The velocity in the upward and downward movements decreased and were statistically significant (p less than 0.01) in the older group. (4) The time lag between the sound signal and the start of touching the palate and floor of the mouth was longer (p less than 0.01) and the variations were greater in the older group. (5) The study showed age-related changes in motor behavior of the tongue.
在这项关于舌部运动技能以及运动行为的年龄相关性变化的研究中，记录了在正中咬合且由节拍器调节时舌头的向上和向下运动。通过使用配备5兆赫兹电子凸阵扫描探头的超声诊断设备以及连接到心音麦克风的生理信号单元，对一组年轻受试者和一组老年受试者进行了记录。结果如下：（1）该系统提供了一种有用的方法，通过声音信号清晰显示舌面及其运动图像来评估舌部运动技能。（2）老年人舌部运动的节奏比年轻人变化更大。（3）老年组中舌头向上和向下运动的速度降低，且具有统计学意义（p小于0.01）。（4）声音信号与触及上颚和口腔底部开始之间的时间延迟更长（p小于0.01），且老年组中的变化更大。（5）该研究显示了舌部运动行为的年龄相关性变化。
