Samson-Dollfus D A, Bendoukha H
Groupe d'Explorations Neurologiques, Centre Hospitalier et Universitaire de Rouen, Hôpital Charles Nicolle, France.
Brain Topogr. 1989 Fall-Winter;2(1-2):165-9. doi: 10.1007/BF01128853.
The instantaneous amplitude of different EEG patterns found in a 36 week newborn baby were mapped by isopotential display, using 3 different references. We found that in certain cases, the nose reference recalculated average and source derivations give the same results. If the different EEG activities on the skull have too an high amplitude, and are not in phase opposition, the average reference differs from the zero potential of the common reference. In this case, the nose may be a better reference. However, it is possible that under other conditions high amplitude activity contaminates the nose, rendering the other references as better choices. From these preliminary results, we recommend the simultaneous display of maps obtained with the different references, and the comparison of the maps with the tracings for topographic studies in babies. It is absolutely necessary to record at least two polygraphic derivations to be able to recognize the sleep stages in which the analyses were performed. The eyes movement lead lets us to see if the EEG activity contaminates the face with multiple displays. It is then possible to decide which reference system is most appropriate.
使用3种不同的参考电极，通过等电位显示映射了一名36周新生儿不同脑电图模式的瞬时振幅。我们发现，在某些情况下，重新计算的鼻参考电极平均和源导数给出相同的结果。如果颅骨上不同的脑电活动具有过高的振幅，且并非反相，则平均参考电极与共同参考电极的零电位不同。在这种情况下，鼻可能是更好的参考电极。然而，在其他条件下，高振幅活动可能会干扰鼻参考电极，使得其他参考电极成为更好的选择。根据这些初步结果，我们建议同时显示用不同参考电极获得的图谱，并将图谱与婴儿地形图研究的描记图进行比较。为了能够识别进行分析时的睡眠阶段，绝对有必要记录至少两个多导记录导数。眼动导联使我们能够通过多种显示来查看脑电活动是否干扰面部。然后就可以确定哪种参考系统最合适。
