Frequency analysis of electromyographic signals in mandibular elevators at maximum clench level.
Frequency analysis of electromyographic signals in mandibular elevators at maximum clench level.
复制标题
最大咬紧程度下下颌提升肌电信号的频率分析。
DOI：
10.1111/j.1365-2842.1992.tb01584.x
复制
发表时间：
1992
影响因子：
2.9
通讯作者：
T. W. Guo
中科院分区：
文献类型：
--
作者：
C. Shi;G. Ouyang;T. W. Guo
应用肌电功率谱分析方法，研究肌电平均功率频率（MPF）与持续收缩时间的关系。对7名健康受试者在牙尖交错位时，以咬肌和颞肌的最大电位水平，记录两侧咬肌和颞肌的表面肌电活动。采用肌电视觉反馈控制咬牙强度。直线回归分析表明，肌电MPF与持续收缩时间呈负相关。结果表明，MPF与收缩时间的斜率可用于检测口颌系统的肌肉疲劳。
Power spectral analysis of electromyogram (ENG) was used to investigate the relationship between mean power frequency (MPF) and sustained contraction time. Surface EMG activity was recorded from masseter and anterior temporal muscles on both sides for seven healthy subjects while clenching at intercuspal position in maximum potential level of these muscles. A visual sense feedback of EMG potential was used to control clenching level. According to linear regression analysis, there was a negative correlation between MPF of EMG and sustained contraction time. The results indicate that the slope of MPF versus contraction time may be used for detecting muscular fatigue in the stomatognathic system.