Connally R E, Nelesen R A, Dieter J N, Uliano K C
Percept Mot Skills. 1983 Dec;57(3 Pt 2):1059-69. doi: 10.2466/pms.1983.57.3f.1059.
Exp. I investigated three recurring problems in electromyographic (EMG) biofeedback research. (1) Pre-knowledge that research involved biofeedback resulted in a selective bias on the part of students asked to volunteer as subjects. (2) EMG readings were not affected by repeated use of the word relax in verbal instructions. (3) The forearm extensor was the only muscle group which showed a statistically significant effect after one 20-min. training session. Exp. II challenged and clarified results of Exp. I and concluded the study with an empirically derived laboratory model for EMG biofeedback research.
实验一研究了肌电图（EMG）生物反馈研究中反复出现的三个问题。（1）预先知晓研究涉及生物反馈，这导致了被要求自愿作为受试者的学生出现选择性偏差。（2）在口头指令中重复使用“放松”一词，肌电图读数并未受到影响。（3）在前臂伸肌是唯一一个在20分钟的单次训练后显示出统计学显著效果的肌肉群。实验二对实验一的结果提出了质疑并进行了澄清，最后得出了一个基于经验推导的肌电图生物反馈研究实验室模型，以此结束了该研究。
