Schütze Maren D, Junghanns Klaus
Centrum of Integrative Psychiatry and Psychotherapy, University of Lubeck, Ratzeburger Allee 160, 23538, Lübeck, Germany,
Appl Psychophysiol Biofeedback. 2015 Jun;40(2):85-94. doi: 10.1007/s10484-015-9278-9.
Alpha/theta neurofeedback training is supposed to enhance cognitive performance as well as alleviate psychiatric disorders. Sleep during this training is regarded a confounding factor, although it is usually not controlled. Here, the amount of sleep, the impact of sleep on frequency results and the validity of subjective judgments of having fallen asleep were investigated. 40 healthy young subjects participated in 31 training units of real or mock feedback. It turned out that stage 2 sleep occurred in 10-14 % of training time, in 95 % of the subjects and in 1/3 of all training units. Sleep significantly influenced the theta/alpha ratio and theta but not alpha amplitudes. Only about 2/3 of the subjective judgements were correct and no more than 13 % of the participants could reliably identify sleep. These data demonstrate that sleep can easily occur during alpha/theta neurofeedback training and should be controlled by objective means.
α/θ神经反馈训练旨在提高认知能力并缓解精神疾病。尽管通常未对其进行控制，但在此训练期间的睡眠被视为一个混杂因素。在此，我们研究了睡眠量、睡眠对频率结果的影响以及入睡主观判断的有效性。40名健康的年轻受试者参加了31个真实或模拟反馈的训练单元。结果发现，在10% - 14%的训练时间、95%的受试者以及所有训练单元的三分之一中出现了第二阶段睡眠。睡眠对θ/α比值和θ波有显著影响，但对α波振幅没有影响。只有约三分之二的主观判断是正确的，且不超过13%的参与者能够可靠地识别睡眠。这些数据表明，在α/θ神经反馈训练期间很容易出现睡眠，应通过客观手段进行控制。
