Department of Psychology, Stanford University, Stanford, CA, USA.
Center for Magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN, USA.
Nat Commun. 2021 Aug 6;12(1):4745. doi: 10.1038/s41467-021-24806-1.
Spatial processing by receptive fields is a core property of the visual system. However, it is unknown how spatial processing in high-level regions contributes to recognition behavior. As face inversion is thought to disrupt typical holistic processing of information in faces, we mapped population receptive fields (pRFs) with upright and inverted faces in the human visual system. Here we show that in face-selective regions, but not primary visual cortex, pRFs and overall visual field coverage are smaller and shifted downward in response to face inversion. From these measurements, we successfully predict the relative behavioral detriment of face inversion at different positions in the visual field. This correspondence between neural measurements and behavior demonstrates how spatial processing in face-selective regions may enable holistic perception. These results not only show that spatial processing in high-level visual regions is dynamically used towards recognition, but also suggest a powerful approach for bridging neural computations by receptive fields to behavior.
感受野的空间处理是视觉系统的核心属性。然而,目前尚不清楚高级区域的空间处理如何有助于识别行为。由于面孔倒置被认为会破坏面孔信息的典型整体处理,我们在人类视觉系统中映射了直立和倒置面孔的群体感受野 (pRF)。在这里,我们表明,在选择性面孔区域中,但不在初级视觉皮层中,pRF 和整体视野覆盖范围会因面孔倒置而变小并向下移动。根据这些测量结果,我们可以成功预测面孔倒置在视野不同位置的相对行为损害。这种神经测量和行为之间的对应关系表明,选择性面孔区域中的空间处理如何能够实现整体感知。这些结果不仅表明,高级视觉区域中的空间处理是如何被动态用于识别的,还为通过感受野将神经计算与行为联系起来提供了一种强大的方法。