Wendland K L, Kammel N, Gundel A
Klinik für Psychiatrie, Universität Kiel.
EEG EMG Z Elektroenzephalogr Elektromyogr Verwandte Geb. 1992 Dec;23(4):221-6.
From 8 men and 12 women with a slow posterior rhythm on the one hand and from 7 male and 5 female healthy volunteers with a regular alpha-EEG on the other closed-eye-EEGs were registered at 8:00 a.m., 12:00 noon, 4:00 p.m., and 8:00 p.m. and recorded on tape for computer processing. Simultaneously each time the body temperature was measured.
In 11 of the 20 patients the slow posterior rhythm shows a right-sided accentuation, in 6 a left-sided. Besides the activity of all frequency-bands favours occipital and occipital-central the right hemisphere. The control group shows only an insignificant right-sided accentuation of alpha-power and alpha-peak-power. The alpha-peak-frequency of the 20 patients is slower than in the controls, the body temperature on the contrary is higher. The physiological circadian shift of the alpha-peak-frequency and of the body temperature does not come up to a similar extent as in the controls. Striking slight is the circadian shift of the frequency of the slow posterior rhythm. Furthermore the day-time related shifts of the alpha-power and of the beta-power take other courses than in the controls. And the maxima of the alpha-power and of the alpha-peak-power are mostly located parietal instead of occipital. All in all the slow posterior rhythm seems to be connected with far-reaching peculiarities of the cerebral function.
一方面，对8名男性和12名女性后节律缓慢者进行研究，另一方面，对7名男性和5名女性脑电图呈规则α波的健康志愿者进行研究。上午8点、中午12点、下午4点和晚上8点记录闭眼脑电图，并录制在磁带上以供计算机处理。每次同时测量体温。
20名患者中，11人的后节律缓慢表现为右侧增强，6人表现为左侧增强。除了所有频段的活动更倾向于枕叶和枕叶中央外，右半球也更活跃。对照组仅显示α波功率和α波峰值功率有不显著的右侧增强。20名患者的α波峰值频率比对照组慢，相反，体温更高。α波峰值频率和体温的生理昼夜变化程度不如对照组明显。后节律缓慢频率的昼夜变化不明显。此外，α波功率和β波功率与白天相关的变化与对照组不同。而且α波功率和α波峰值功率的最大值大多位于顶叶而非枕叶。总的来说，后节律缓慢似乎与大脑功能的诸多特殊情况有关。
