Liu Meng, Zhan Jiayu, Wang Lihui
Institute of Psychology and Behavioral Science, Antai College of Economics and Management, Shanghai Jiao Tong University, Shanghai 200030, China.
School of Psychology, Shanghai Jiao Tong University, Shanghai 200030, China.
iScience. 2024 Aug 6;27(9):110686. doi: 10.1016/j.isci.2024.110686. eCollection 2024 Sep 20.
Visual perception is enacted and constrained by the constantly moving eyes. Although it is well known that the first two fixations are crucial for face recognition, the function of each fixation remains unspecified. Here we demonstrate a central-to-divergent pattern of the two fixations and specify their functions: Fix I clustered along the nose bridge to cover the broad facial information; Fix II diverged to eyes, nostrils, and lips to get the local information. Fix II correlated more than Fix I with the differentiating information between faces and contributed more to recognition responses. While face categories can be significantly discriminated by Fix II's but not Fix I's patterns alone, the combined patterns of the two yield better discrimination. Our results suggest a functional division and collaboration of the two fixations in sampling the general-to-specific facial information and add to understanding visual perception as an active process undertaken by structural motor programs.
视觉感知是由不断移动的眼睛所塑造和限制的。虽然众所周知，最初的两次注视对面部识别至关重要，但每次注视的功能仍不明确。在这里，我们展示了两次注视从中央到发散的模式，并明确了它们的功能：注视I沿着鼻梁聚集，以覆盖广泛的面部信息；注视II发散到眼睛、鼻孔和嘴唇，以获取局部信息。注视II比注视I与面部之间的区分信息相关性更强，对识别反应的贡献更大。虽然仅通过注视II的模式就能显著区分面部类别，但仅靠注视I的模式则不行，而两者的组合模式能产生更好的区分效果。我们的结果表明，两次注视在采样从一般到特定的面部信息方面存在功能分工与协作，并有助于将视觉感知理解为由结构性运动程序执行的一个主动过程。
