Cognitive Neuroscience Laboratory, German Primate Center - Leibniz Institute for Primate Research, Göttingen, Germany.
Faculty of Biology and Psychology, University of Göttingen, Göttingen, Germany.
Sci Rep. 2024 Nov 17;14(1):28381. doi: 10.1038/s41598-024-78867-5.
Human object perception depends on the proper integration of multiple visual features, such as color and motion. When features are integrated incorrectly, they are perceptually misbound and can cause illusions. This study investigates the phenomenon of continuous misbinding of color and motion features in peripheral vision, addressing the role of spatial continuity and color configuration in binding processes. Using a novel continuous report task, human subjects reported the perceived movement direction of color-coded dots in the peripheral visual field that were either congruent or incongruent with a foveal stimulus. Results indicate that spatial continuity is crucial for feature misbinding, with a marked decrease in peripheral perceptions bound to match foveal perception when the foveal and peripheral stimuli are spatially disjointed. Additionally, performance improved significantly when peripheral and foveal features were aligned, suggesting a 'positive illusion' effect where congruent features enhance perceptual accuracy. This effect was independent of the color pairings used, challenging the notion that color processing discrepancies might drive erroneous perception in this stimulus. These findings highlight the complex interplay between spatial configuration and perceptual accuracy in visual feature integration, with implications for understanding the neural basis of vision and developing applications to address perceptual inaccuracies in visual disorders.
人类对物体的感知取决于多个视觉特征的正确整合，例如颜色和运动。当特征整合不正确时，它们会在感知上被错误绑定，并可能导致错觉。本研究调查了周边视觉中颜色和运动特征连续错误绑定的现象，探讨了空间连续性和颜色配置在绑定过程中的作用。使用一种新颖的连续报告任务，人类受试者报告了在周边视觉场中颜色编码点的感知运动方向，这些点与中央刺激一致或不一致。结果表明，空间连续性对于特征错误绑定至关重要，当中央和周边刺激在空间上不连续时，与中央感知匹配的周边感知显著减少。此外，当周边和中央特征对齐时，性能显著提高，这表明存在“正错觉”效应，即一致的特征增强了感知准确性。这种效应与使用的颜色对无关，这挑战了颜色处理差异可能导致这种刺激下错误感知的观点。这些发现强调了视觉特征整合中空间配置和感知准确性之间的复杂相互作用，对理解视觉的神经基础和开发应用于解决视觉障碍中的感知不准确问题具有启示意义。
