Proceedings of the National Academy of Sciences of the United States of America ( IF 11.1 ) Pub Date : 2020-11-24 , DOI: 10.1073/pnas.1912333117 Emilie L. Josephs 1 , Talia Konkle 1
Space-related processing recruits a network of brain regions separate from those recruited in object processing. This dissociation has largely been explored by contrasting views of navigable-scale spaces to views of close-up, isolated objects. However, in naturalistic visual experience, we encounter spaces intermediate to these extremes, like the tops of desks and kitchen counters, which are not navigable but typically contain multiple objects. How are such reachable-scale views represented in the brain? In three human functional neuroimaging experiments, we find evidence for a large-scale dissociation of reachable-scale views from both navigable scene views and close-up object views. Three brain regions were identified that showed a systematic response preference to reachable views, located in the posterior collateral sulcus, the inferior parietal sulcus, and superior parietal lobule. Subsequent analyses suggest that these three regions may be especially sensitive to the presence of multiple objects. Further, in all classic scene and object regions, reachable-scale views dissociated from both objects and scenes with an intermediate response magnitude. Taken together, these results establish that reachable-scale environments have a distinct representational signature from both scene and object views in visual cortex.
中文翻译:
视觉皮层中对象,场景和可到达范围环境的视图之间的大规模分离[学术论文(在线免费)]
与空间相关的处理募集了一个大脑区域网络,该区域与对象处理中募集的区域分开。通过将可导航尺度空间的视图与特写的孤立对象的视图进行对比,已在很大程度上探索了这种分离。但是,在自然主义的视觉体验中,我们遇到了介于这些极端之间的空间,例如书桌和厨房柜台的顶部,它们不可通行,但通常包含多个对象。大脑中如何显示这种可达范围的视图?在三个人类功能性神经影像实验中,我们找到了从可导航场景视图和近距离物体视图中可达到比例视图大规模分离的证据。在后侧副沟中发现了三个大脑区域,它们对可到达的视野表现出系统性的反应偏好,下顶沟和上顶小叶。随后的分析表明,这三个区域可能对多个物体的存在特别敏感。此外,在所有经典场景和对象区域中,可到达的比例视图与对象和场景都具有中等的响应幅度。综上所述,这些结果表明,可到达范围的环境在视觉皮层中具有与场景和对象视图不同的表示特征。