It is well known that prolonged exposure to a certain size stimulus alters the perceived size of a subsequently presented stimulus at the same location. How the rest of the visual space is affected by this size adaptation, however, has not been systematically studied before. Here, to fill this gap in literature, we tested size adaptation at the adapter location as well as the rest of the visual space. We used peripherally presented solid discs (Experiment 1) and rings (Experiment 2) as adapter and target (test) stimuli. Observers adapted to a mid-sized stimulus and judged the size of the subsequently presented smaller or larger target stimuli. Results showed that the perceived sizes of target stimuli were repelled away from the adapter size, not only at the adapter location but also at other locations. These findings demonstrate that size adaptation causes widespread distortion of the visual space and alters perceived size. We discuss possible computational models that may underpin the perceptual effect.

众所周知，长时间暴露于特定大小的刺激会改变随后在同一位置呈现的刺激的感知大小。然而，视觉空间的其余部分如何受到这种尺寸适应的影响，之前还没有系统地研究过。在这里，为了填补文献中的这一空白，我们在适配器位置以及视觉空间的其余部分测试了尺寸适应。我们使用外围呈现的实心圆盘（实验 1）和环（实验 2）作为适配器和目标（测试）刺激。观察者适应中等大小的刺激并判断随后呈现的较小或较大的目标刺激的大小。结果表明，不仅在适配器位置而且在其他位置，目标刺激的感知大小都被适配器大小排斥。这些发现表明，尺寸适应会导致视觉空间的广泛扭曲并改变感知尺寸。我们讨论了可能支持感知效果的计算模型。