Ruf S, Cecere F, Kupfer J, Pancherz H
Department of Orthodontics, University of Giessen, Germany.
Acta Odontol Scand. 1997 Jan;55(1):44-8. doi: 10.3109/00016359709091940.
The present study was undertaken to assess the effect of a non-experimental emotional stress situation on the functional electromyographic (EMG) activity of the masticatory muscles. The material comprised 15 dental students without signs and symptoms of disorders from the temporomandibular system. The activity of the masseter and anterior temporalis muscles was recorded bilaterally by means of surface EMG. The subjective degree of helplessness of the subjects was assessed and related to the EMG activity response, to assess a possible interrelation. The EMG activity during the stress situation was significantly greater than for the non-stress situation. This shift in EMG activity was seen for all the muscles and all the functions analyzed. No significant gender differences were found. When the subjective degree of helplessness is taken into consideration, women showed significantly higher ratings than male subjects. The Helplessness Scale ratings correlated with the changes in EMG activity.
本研究旨在评估非实验性情绪应激状况对咀嚼肌功能性肌电图（EMG）活动的影响。研究材料包括15名无颞下颌系统疾病体征和症状的牙科学生。通过表面肌电图双侧记录咬肌和颞肌前束的活动。评估受试者的主观无助程度，并将其与肌电图活动反应相关联，以评估可能的相互关系。应激状况下的肌电图活动显著高于非应激状况。所有分析的肌肉和功能均出现了肌电图活动的这种变化。未发现显著的性别差异。考虑到主观无助程度时，女性的评分显著高于男性受试者。无助量表评分与肌电图活动的变化相关。
