Study on the Characteristics of EMG Signal of the Masticatory Muscles in Different Materials
10.3969/j.issn.1671-7104.2016.05.001
- VernacularTitle:软硬不同材料下咀嚼肌的肌电信号特征研究
- Author:
Hui SHEN
1
;
Zhengang YU
;
Jiaying GUO
;
Tengyu ZHANG
;
Wenru ZHAO
Author Information
1. 北京航空航天大学生物与医学工程学院,北京市,100191
- Keywords:
masticatory muscle;
surface electromyography;
feature extraction
- From:
Chinese Journal of Medical Instrumentation
2016;40(5):314-317
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the activities of different soft and hard materials during right chewing masticatory muscles, describing the masticatory muscles of time domain and frequency domain features. Methods 11 experimental subjects who conform to the standards of measurement chew two materials of different soft and hard texture. Then record surface EMG of each bilateral temporalis anterior bundle, masseter, two bilateral anterior abdominal muscles, analysis to 5 kinds of characteristics of the study of EMG.Results When subjects chewing different soft and hard materials, al the EMG features in the bilateral anterior temporalis and masseter values had signifi cant difference (P < 0.05). The results in bilateral digastric anterior abdominal except zero crossing rate have signifi cant difference; median frequency on the right side of the masticatory muscle has decreased trend. ConclusionThe anterior temporalis and masseter EMG active more intense when chewing hard objects; the right side of the masticatory muscles have obvious fatigue trend after chewing hard masticatory 30 cycles.
