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利用事件相关电位(ERP)研究知觉组织在人类视觉皮层的神经基础. 使用的刺激图形是由局部元素均匀分布组成的正方形阵列(一致性刺激)和局部元素依据空间相邻性或颜色相似性形成行或列组织的正方形阵列(知觉组织刺激). 刺激图形随机呈现在视野中的一个象限, 被试做行或列组织的判断, 同时记录其ERPs. 实验发现, 一致性刺激与知觉组织刺激都能够诱发1个ERP早成分C1, 其幅度在刺激呈现后70 ms左右达到峰值, 并且其极性随刺激所处的上下视野变化. 基于真实脑边界元模型的偶极子分析结果表明, C1的源可定位于距状裂皮层, 其幅度受到相邻性知觉组织的调制. 这种知觉组织效应对于上视野刺激较强, 下视野刺激较弱. 这些结果为人类初级视皮层参与知觉组织的早期过程提供了ERP证据.
Event-related potentials (ERP) were used to study the neural basis of perceptual tissue in the human visual cortex using stimulus patterns consisting of a square array of uniform distribution of local elements (consistent stimuli) and local elements formed by spatial proximity or color similarity Row or column organization of square array (perceptual tissue stimulation) .Stimulation graph randomly presented in a quadrant of the field of vision, subjects were judged by row or column organization, while recording its ERPs.Experiment found that consistent stimulation and perceptual tissue stimulation Can induce a ERP early component C1, the amplitude of the peak in about 70 ms after the stimulus presentation, and its polarity with the upper and lower field of vision where the stimulus changes.According to the real brain boundary element model of the dipole analysis results show that C1 The source can be located in the dural cortex, the amplitude of which is modulated by the adjacent perceptual tissue, which is strongly stimulated by the upper field of view and weaker by the lower field of view.These results are indicative of the early involvement of the primary visual cortex in the conscious tissue The process provides ERP evidence.