Kostandov E A, Ivashchenko O I, Vazhnova T N
Zh Vyssh Nerv Deiat Im I P Pavlova. 1985 Nov-Dec;35(6):1030-8.
Two parts of a geometrical figure are consecutively presented to healthy adult subjects in the left and right visual fields; the subjects have to compare them mentally and to decide whether these parts form a standard figure or not. Correctness of the reaction is controlled by a computer which lights up on the screen the words "good" or "error". The number of correct decisions of this visual-spatial task does not depend on the hemisphere to which information is addressed. The reaction time is substantially shorter if the information comes "directly" to the right hemisphere. Due to better training in the left hemisphere interhemispheric difference in reaction time gradually disappears in repeated tests. Training to mental "constructing" takes place only in the tests following positive feedback stimulus. Analysis of amplitude-temporal parameters of P300 wave shows that at correct decision of the visual-spatial task the level of activation in the right hemisphere is higher than in the left one.
将几何图形的两个部分依次呈现给健康成年受试者的左、右视野；受试者必须在脑海中对它们进行比较，并判断这些部分是否构成一个标准图形。反应的正确性由计算机控制，计算机在屏幕上显示“正确”或“错误”字样。这个视觉空间任务的正确决策数量并不取决于信息所指向的半球。如果信息“直接”进入右半球，反应时间会显著缩短。由于左半球接受了更好的训练，在重复测试中，半球间的反应时间差异逐渐消失。心理“构建”训练仅在正反馈刺激后的测试中进行。对P300波的幅度-时间参数分析表明，在视觉空间任务的正确决策中，右半球的激活水平高于左半球。
