Kopytova F V
Zh Vyssh Nerv Deiat Im I P Pavlova. 1975 Jan-Feb;25(1):35-44.
Spontaneous activity and responses to photic flashes and tones of 133 neurones were recorded in the visual cortex during polarization of the same area (1.5 to 10 muA, 5 to 30 min) and after it (one to 52 min). Responses of cells to two unimodal stimuli of different parameters were analysed, of which one was presented repeatedly during the polarization ("positive"), and the other one to three times ("negative"). Depending on the previous "learning", 47.4% of the units responded after the polarization to "positive" photic stimulus and 37,8%--to acoustic stimulus. The trace effects of the stimuli pairings are reproduced in polarization after-effect by the action of the sensory signal alone. The recorded differences in the nature and duration of the reproduction of trace processes formed to an adequate and inadequate stimuli, are due to the dissimilar action of polarizing currents on neurones of the cortex cross-section and to different effectivity of the visual and non-visual influences related to it.
在同一区域极化期间（1.5至10微安，5至30分钟）及其后（1至52分钟），记录了视觉皮层中133个神经元的自发活动以及对光闪烁和声音的反应。分析了细胞对两种不同参数的单峰刺激的反应，其中一种在极化期间重复呈现（“阳性”），另一种呈现一至三次（“阴性”）。根据先前的“学习”情况，47.4%的单位在极化后对“阳性”光刺激有反应，37.8%对声刺激有反应。刺激配对的痕迹效应仅通过感觉信号的作用在极化后效应中得以重现。记录到的对适宜和不适宜刺激形成的痕迹过程重现的性质和持续时间的差异，是由于极化电流对皮层横截面神经元的不同作用以及与之相关的视觉和非视觉影响的不同效力所致。
