Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.
J Vis. 2021 Sep 1;21(10):10. doi: 10.1167/jov.21.10.10.
In crowding, perception of a target deteriorates in the presence of nearby flankers. Surprisingly, perception can be rescued from crowding if additional flankers are added (uncrowding). Uncrowding is a major challenge for all classic models of crowding and vision in general, because the global configuration of the entire stimulus is crucial. However, it is unclear which characteristics of the configuration impact (un)crowding. Here, we systematically dissected flanker configurations and showed that (un)crowding cannot be easily explained by the effects of the sub-parts or low-level features of the stimulus configuration. Our modeling results suggest that (un)crowding requires global processing. These results are well in line with previous studies showing the importance of global aspects in crowding.
在拥挤情况下，目标感知会在附近的侧抑制存在时恶化。令人惊讶的是，如果添加额外的侧抑制（去拥挤），则可以挽救感知。去拥挤是所有经典拥挤模型和一般视觉的主要挑战，因为整个刺激的全局配置至关重要。然而，尚不清楚配置的哪些特征会影响（不）拥挤。在这里，我们系统地剖析了侧抑制的配置，并表明（不）拥挤不能简单地用刺激配置的子部分或低级特征的影响来解释。我们的建模结果表明，（不）拥挤需要全局处理。这些结果与之前的研究结果一致，表明全局方面在拥挤中的重要性。
