Kowalski J, Karbowski K
Neurol Neurochir Pol. 1977 Mar-Apr;11(2):179-87.
Clinical course of disease and results of EEG examinations of 6 patients with severe brain disturbances of various aetiology provided grounds for discussion on the phenomenon of periodic stereotyped EEG discharges (PSD) which is of considerable diagnostic value in some cases. The variability in appearance of these discharges, in their form and duration of intervals between them are stressed--the last parameter varied in own material from 0.5 to 8 sec. The appearance of PSD may indicate increased convulsive excitability of the cortical and subcortical structures of the gray matter. The prognostic value of PSD was not always the same and it could be established only basing upon a comparison of EEG findings during successive examinations.
6例不同病因所致严重脑功能障碍患者的疾病临床过程及脑电图检查结果，为讨论周期性刻板脑电图放电（PSD）现象提供了依据，该现象在某些情况下具有重要的诊断价值。强调了这些放电在外观、形式及其之间间隔持续时间上的变异性——在本人的资料中，最后一个参数在0.5至8秒之间变化。PSD的出现可能表明灰质皮质和皮质下结构的惊厥兴奋性增加。PSD的预后价值并非总是相同的，只有通过连续检查期间脑电图结果的比较才能确定。
