Sokolov E N, Nezlina N I
M. V. Lomonosov Moscow Sate University, Institute of Higher Nervous Activity and Neurophsyiology, Russian Academy of Sciences, Moscow, Russia.
Neurosci Behav Physiol. 2007 May;37(4):369-77. doi: 10.1007/s11055-007-0023-6.
This review discusses the information content of perceptual and semantic evoked potentials arising in humans as a result of instantaneous changes in nonverbal and verbal stimuli. The amplitudes of perceptual and semantic evoked potentials were found to correlate positively with subjects' assessments of the differences between these stimuli. Multidimensional scaling matrixes of evoked potential amplitudes and subjective assessments of differences on pairwise substitution of stimuli showed that the actual colors and color names occupied a four-dimensional spherical color space and were encoded by excitation vectors of identical lengths. Color differences were equal to the absolute differences between their excitation vectors, while semantic differences in color names corresponded to the absolute difference vectors represented by long-term color memory traces. These data were reviewed in the framework of a spherical model of cognitive processes.
本综述讨论了由于非语言和语言刺激的瞬时变化而在人类中产生的感知和语义诱发电位的信息内容。研究发现，感知和语义诱发电位的振幅与受试者对这些刺激之间差异的评估呈正相关。诱发电位振幅的多维标度矩阵以及对刺激两两替换时差异的主观评估表明，实际颜色和颜色名称占据一个四维球形颜色空间，并由长度相同的激发向量编码。颜色差异等于其激发向量之间的绝对差异，而颜色名称的语义差异对应于由长期颜色记忆痕迹表示的绝对差异向量。这些数据在认知过程的球形模型框架内进行了综述。
