Transsaccadic prediction of visual features: Weighting, scope and generalization

我们每秒移动几次视线，将高分辨率的中心凹区域带到有趣的物体上，进行详细的视觉采样。因此，随着每一次新的注视，物体的视网膜位置都会改变，由于视觉系统的非均质性，它们的空间分辨率也会改变。该项目的主要目标是研究视觉系统如何使用预测来处理在周边和中心凹采样的不同视觉输入。在第一轮实验中，我们进行了几个学习实验，在这些实验中，我们在大多数参与者没有注意到的眼跳运动中交换物体。之后，我们测试了这些改变的视觉体验如何影响对外周和中心凹输入的预测。我们发现外周知觉偏向于先前相关的中心凹输入。此外，视觉搜索偏向于以前相关的外围输入。第二阶段的主要目标是(1)表征预测中心凹和实际外周输入的加权函数，(2)确定跨视跳预测的范围，(3)研究跨视跳预测的特异性、概括性和持久性。

We move our gaze several times each second to bring the high-resolution foveal region to interesting objects for detailed visual sampling. As a consequence, with each new fixation, objects change their retinal position and, owing to the visual system's nonhomogeneity, their spatial resolution as well. The main goal of the project is to investigate how the visual system uses predictions to deal with the different visual inputs sampled at the periphery and fovea. In the first round we have conducted several learning experiments in which we swapped objects across saccadic eye movements unnoticed by most participants. Afterwards, we tested how these altered visual experiences affect predictions of peripheral and foveal input. We showed that peripheral perception was biased toward previously associated foveal input. Moreover, visual search was biased toward previously associated peripheral input. The overarching goals of the second period are (1) to characterize the weighting function of predicted foveal and actual peripheral input, (2) to determine the scope of transsaccadic prediction, and (3) to investigate the specificity, generalization, and persistence of transsaccadic prediction.