Rogers Cassandra, Rushton Simon K, Warren Paul A
School of Psychology, Cardiff University, Cardiff, UK.
Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
Iperception. 2017 Nov 21;8(6):2041669517736072. doi: 10.1177/2041669517736072. eCollection 2017 Nov-Dec.
Safe movement through the environment requires us to monitor our surroundings for moving objects or people. However, identification of moving objects in the scene is complicated by self-movement, which adds motion across the retina. To identify world-relative object movement, the brain thus has to 'compensate for' or 'parse out' the components of retinal motion that are due to self-movement. We have previously demonstrated that retinal cues arising from central vision contribute to solving this problem. Here, we investigate the contribution of peripheral vision, commonly thought to provide strong cues to self-movement. Stationary participants viewed a large field of view display, with radial flow patterns presented in the periphery, and judged the trajectory of a centrally presented probe. Across two experiments, we demonstrate and quantify the contribution of peripheral optic flow to flow parsing during forward and backward movement.
在环境中安全移动需要我们监测周围环境中的移动物体或人员。然而，由于自身运动（这会在视网膜上增加运动），识别场景中的移动物体变得复杂。为了识别相对于世界的物体运动，大脑因此必须“补偿”或“解析出”由于自身运动而产生的视网膜运动成分。我们之前已经证明，来自中央视觉的视网膜线索有助于解决这个问题。在这里，我们研究通常被认为能提供自身运动强烈线索的外周视觉的作用。静止的参与者观看一个大视野显示器，外周呈现径向流模式，并判断中央呈现的探针的轨迹。在两个实验中，我们展示并量化了外周光流在向前和向后运动过程中对流解析的贡献。
