Howell P G, Johnson C W, Ellis S, Watson I B, Klineberg I
Department of Prosthetic Dentistry, University of Sydney, NSW Australia.
J Oral Rehabil. 1992 Nov;19(6):595-605. doi: 10.1111/j.1365-2842.1992.tb01489.x.
A computer-based system is described which records and analyses electromyographic (EMG) signals and tracking data for mandibular movements during function. EMG signals were obtained bilaterally from six muscles and a Sirognathograph monitored the position of the lower incisor teeth in three dimensions. Directed jaw movement tasks by subjects were monitored. These data were continuously sampled at a rate of 1 KHz per channel over an operator controlled period. Analysis of the data was performed off-line following the experiment. Individual chewing cycles associated with masticatory function were identified and the timing and dimensions of each chewing envelope established. Corresponding EMG values were also determined and displays of EMG and jaw movement were plotted on a common time base. An average chewing cycle and correlated EMG activity could also be displayed on a high resolution monitor and plotted for a hard copy to enable a comparison to be made between subjects with and without jaw dysfunction.
本文描述了一种基于计算机的系统，该系统可记录和分析功能活动期间下颌运动的肌电图（EMG）信号及跟踪数据。双侧从六块肌肉获取EMG信号，同时使用Siognathograph三维监测下切牙的位置。监测受试者的定向颌运动任务。在操作员控制的时间段内，这些数据以每通道1千赫兹的速率连续采样。实验结束后离线进行数据分析。识别与咀嚼功能相关的各个咀嚼周期，并确定每个咀嚼包络的时间和尺寸。还确定了相应的EMG值，并将EMG和颌运动显示在同一时间轴上。平均咀嚼周期和相关的EMG活动也可以显示在高分辨率监视器上，并绘制硬拷贝，以便对有无颌功能障碍的受试者进行比较。
