PDF(Pubmed)
Abstract：
Recent work has shown that the occipital place area (OPA)-a scene-selective region in adult humans-supports \"visually guided navigation\" (i.e. moving about the local visual environment and avoiding boundaries/obstacles). But what is the precise role of OPA in visually guided navigation? Considering humans move about their local environments beginning with crawling followed by walking, 1 possibility is that OPA is involved in both modes of locomotion. Another possibility is that OPA is specialized for walking only, since walking and crawling are different kinds of locomotion. To test these possibilities, we measured the responses in OPA to first-person perspective videos from both \"walking\" and \"crawling\" perspectives as well as for 2 conditions by which humans do not navigate (\"flying\" and \"scrambled\"). We found that OPA responded more to walking videos than to any of the others, including crawling, and did not respond more to crawling videos than to flying or scrambled ones. These results (i) reveal that OPA represents visual information only from a walking (not crawling) perspective, (ii) suggest crawling is processed by a different neural system, and (iii) raise questions for how OPA develops; namely, OPA may have never supported crawling, which is consistent with the hypothesis that OPA undergoes protracted development.
摘要：
最近的工作表明，枕骨区域（OPA）-成人中的场景选择区域-支持“视觉引导导航”（即在局部视觉环境中移动并避免边界/障碍物）。但是OPA在视觉引导导航中的确切作用是什么？考虑到人类从爬行开始，然后步行在当地环境中移动，1的可能性是OPA涉及两种运动模式。另一种可能性是OPA只专门用于行走，因为行走和爬行是不同的运动。为了测试这些可能性，我们从“行走”和“爬行”角度以及人类无法导航的2种情况（“飞行”和“加扰”）测量了OPA对第一人称视角视频的响应。我们发现OPA对行走视频的反应比其他任何视频都多，包括爬行,对爬行视频的反应并不比对飞行或加扰视频的反应更多。这些结果(I)表明，OPA仅从行走(而不是爬行)的角度代表视觉信息，(ii)建议爬行是由不同的神经系统处理的，和(iii)提出OPA如何发展的问题；即，OPA可能从未支持过爬行，这与OPA经历长期发展的假设是一致的。
