Zhang Songyan, Du Xue, Wu Xin, Wei Dongtao, Zhang Meng, Qiu Jiang
aKey Laboratory of Cognition and Personality (SWU), Ministry of Education bSchool of Psychology, Southwest University, Chongqing, China.
Neuroreport. 2013 Dec 4;24(17):956-61. doi: 10.1097/WNR.0000000000000023.
Event-related brain potentials (ERPs) were used to examine the electrophysiological correlates of the visual illusion effect in the Müller-Lyer illusion tasks. The participants were presented with the context of a horizontal line with two symmetric inward-pointing arrowheads or outward-pointing arrowheads, and then, they were asked to indicate whether they perceived an increase or a decrease in the line length. The behavioral results showed that there were significant differences among the four types of tasks, which meant that participants could understand different mean illusion magnitudes. The ERP results showed that both the illusion-45 and the illusion-135 elicited a more negative ERP deflection (N180-280) than did the illusion-225 and illusion-315 between 180 and 280 ms. In addition, the strong illusion stimuli elicited a more positive ERP deflection (P280-450) than did the weak illusion stimuli between 280 and 450 ms after the onset of the stimuli. Dipole source analysis of the difference wave (illusion-135-illusion-225) indicated that one generator localized in the left lateral occipital cortex and the difference wave (illusion-45-illusion-135) indicated that one generator localized in the left lingual gyrus. Our results led us to conclude that the ERP deflection in the different illusory strength might be related to the theory of attention resource distribution or because of the inverse optics problem. Then, the early visual areas lateral occipital cortex and the lingual gyrus near to the visual cortex could contribute to integrated processing in the illusory contours and top-down control processing because of the visual experiences.
事件相关脑电位（ERPs）被用于研究缪勒-莱尔错觉任务中视觉错觉效应的电生理相关性。向参与者呈现带有两个对称向内或向外箭头的水平线背景，然后要求他们指出是否察觉到线长增加或减少。行为结果表明，四种任务类型之间存在显著差异，这意味着参与者能够理解不同的平均错觉量值。ERP结果显示，在180至280毫秒之间，错觉-45和错觉-135比错觉-225和错觉-315引发了更负的ERP偏转（N180-280）。此外，在刺激开始后280至450毫秒之间，强错觉刺激比弱错觉刺激引发了更正的ERP偏转（P280-450）。差异波（错觉-135-错觉-225）的偶极子源分析表明，一个发生器位于左侧枕叶外侧皮质，差异波（错觉-45-错觉-135）表明一个发生器位于左侧舌回。我们的结果使我们得出结论，不同错觉强度下的ERP偏转可能与注意力资源分配理论有关，或者是由于逆光学问题。然后，早期视觉区域枕叶外侧皮质和靠近视觉皮质的舌回可能由于视觉经验而有助于对视错觉轮廓的整合处理和自上而下的控制处理。
