Sagberg F
Biol Psychol. 1979 Nov;9(3):201-14. doi: 10.1016/0301-0511(79)90040-1.
Twenty-nine volunteers participated in a one-session experiment consisting of 10 min rest followed by a 30 min treatment period. Brief relaxation instructions were given at the beginning of the rest period. The treatment was either frontalis EMG feedback, forearm EMG feedback, or non-contingent stimulation. The two feedback groups showed EMG decreases in their respective target muscles during the no-feedback rest period, with no further decrease during feedback training, indicating that feedback was no more effective than relaxation instructions. Heart rate decreased significantly in both feedback groups. Finger pulse amplitude decreased significantly in the forearm feedback group. It is pointed out that the latter change does not necessarily indicate peripheral vasoconstriction, but may be due to a fall in pulse pressure as a consequence of increased blood flow to the relaxing muscles. The results are unsupportive of the assumption that frontalis relaxation is particularly effective in inducing a generalized relaxation.
29名志愿者参与了一项单阶段实验，该实验包括10分钟的休息，随后是30分钟的治疗期。在休息期开始时给出了简短的放松指导。治疗方式为额肌肌电图反馈、前臂肌电图反馈或非条件刺激。两个反馈组在无反馈休息期各自的目标肌肉中肌电图均下降，在反馈训练期间没有进一步下降，这表明反馈并不比放松指导更有效。两个反馈组的心率均显著下降。前臂反馈组的手指脉搏幅度显著下降。需要指出的是，后一种变化不一定表明外周血管收缩，而可能是由于流向放松肌肉的血流量增加导致脉压下降所致。结果不支持额肌放松在诱导全身放松方面特别有效的假设。
