McGowan W T, Haynes S N, Wilson C C
Biofeedback Self Regul. 1979 Dec;4(4):323-36. doi: 10.1007/BF00998962.
This study evaluated the effects of one session of frontal electromyographic (EMG) feedback on (1) frontal EMG, (2) frontal EMG response to stress, (3) cardiovascular variables, and (4) cardiovascular responses to stress. Eighteen male and female undergraduate volunteers received either frontal EMG feedback or a relaxation instructions control procedure and were then exposed to a fear stimulus (visualization of a feared situation) and a post-stress adaptation period while several cardiovascular measures were monitored. In comparison to the control group, frontal EMG feedback significantly reduced resting levels of frontal EMG and frontal EMG response to stress but had no significant effect on cardiovascular measures. The results of this study suggest that one session of frontal EMG feedback may attenuate response to stress but, within the paradigm utilized, may be confined to the specific muscle groups monitored. Additional areas of needed research were noted including individual differences in generalization, the effects of EMG feedback from multiple sites sequentially and concomitantly, and the generalized effects from symptom-specific sites.
本研究评估了一次额部肌电图（EMG）反馈对以下方面的影响：（1）额部EMG；（2）额部EMG对应激的反应；（3）心血管变量；以及（4）心血管对应激的反应。18名男女本科志愿者接受了额部EMG反馈或放松指导控制程序，然后在监测多项心血管指标的同时，暴露于恐惧刺激（想象一个令人恐惧的情境）和应激后适应期。与对照组相比，额部EMG反馈显著降低了额部EMG的静息水平和额部EMG对应激的反应，但对心血管指标没有显著影响。本研究结果表明，一次额部EMG反馈可能会减弱对应激的反应，但在所采用的范式内，可能仅限于所监测的特定肌肉群。研究指出了需要进一步研究的其他领域，包括泛化方面的个体差异、来自多个部位的EMG反馈依次和同时产生的影响，以及症状特定部位的广泛影响。
