Evtikhin D V, Latanov A V, Sokolov E N
M. V. Lomonosov Moscow State University.
Neurosci Behav Physiol. 1998 May-Jun;28(3):285-93. doi: 10.1007/BF02462958.
Operant differentiation was used to study black/white stimulus intensity discrimination (over the range 1-37 cd/m2; CIE-31 coordinates X = 0.340, Y = 0.304) in two monkeys (rhesus macaques). Confusion matrices were constructed from the probabilities that animals would make operant responses when required to select from pairs (a conditioned stimulus and one of 9 differentiation stimuli) of stimuli in 10 series of experiments with conditioned stimuli of 10 intensities. Correlation matrices for vectors consisting of stimuli in the confusion matrices were assessed by factor analysis for identification of their intrinsic vectors. A perceptive space of two-dimensional structure was obtained for the brightness of black/white stimuli, and the main characteristics of this were similar to those of the analogous perceptive spaces for humans, fish (carp), and rabbits. The coordinate axes of this space can be interpreted in terms of excitation of two intensity-encoding channels: light and dark.
操作性分化被用于研究两只恒河猴对黑白刺激强度的辨别能力（范围为1-37坎德拉每平方米；CIE-31坐标X = 0.340，Y = 0.304）。在10组实验中，针对10种强度的条件刺激，构建混淆矩阵，该矩阵基于动物在从成对刺激（一个条件刺激和9个分化刺激之一）中进行选择时做出操作性反应的概率。通过因子分析评估由混淆矩阵中的刺激组成的向量的相关矩阵，以识别其内在向量。获得了黑白刺激亮度的二维结构感知空间，其主要特征与人类、鱼类（鲤鱼）和兔子的类似感知空间相似。这个空间的坐标轴可以根据两个强度编码通道的激发来解释：明和暗。
