Kiroi V N, Aslanyan E V
A. B. Kogan Science Institute of Neurocybernetics, Rostov State University, Russia.
Neurosci Behav Physiol. 2006 Nov;36(9):921-8. doi: 10.1007/s11055-006-0108-7.
Experimental studies have demonstrated that the formation of the state of optimum working ability in conditions of monotonous activity is associated with a decrease (compared to the rest state) in the level of "preventive" arousal of the CNS, manifest on the EEG as an increase in the power of slow rhythms on the background of a selective increase in the level of coherence at frequencies in the alpha rhythm in the caudal areas of the cortex. Prolonged exposure to monotonous conditions leads to increases in the power of slow (theta and alpha(1)) and beta frequencies in the EEG spectrum without marked changes in the level of coherence. Our results, along with published data, were used to propose the hypothesis that unlike the basic states of the sleep-waking cycle (sleep, rest, active waking, etc.), the state of monotony lacks intrinsic ("built-in") self-regulatory mechanisms; this results in instability in the operation of the regulatory systems of the brain. This leads to the appearance of marked periodicity in changes in both the functional state of the CNS and the quality of work performed by humans.
实验研究表明，在单调活动条件下形成最佳工作能力状态与中枢神经系统“预防性”唤醒水平的降低（与休息状态相比）有关，脑电图显示为在皮层尾部区域α节律频率的相干性水平选择性增加的背景下，慢节律功率增加。长时间暴露于单调条件会导致脑电图频谱中慢波（θ波和α1波）和β波频率的功率增加，而相干性水平无明显变化。我们的研究结果与已发表的数据一起，被用于提出这样一个假设：与睡眠-觉醒周期的基本状态（睡眠、休息、主动觉醒等）不同，单调状态缺乏内在（“内置”）的自我调节机制；这导致大脑调节系统运行不稳定。这导致中枢神经系统功能状态和人类工作质量的变化出现明显的周期性。
