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人类视觉皮层中超宽视野神经影像学中的沉浸式场景表示。

Immersive scene representation in human visual cortex with ultra-wide-angle neuroimaging.

机构信息

Department of Psychology, Harvard University, Cambridge, MA, USA.

Center for Brain Science, Harvard University, Cambridge, MA, USA.

出版信息

Nat Commun. 2024 Jun 28;15(1):5477. doi: 10.1038/s41467-024-49669-0.

Abstract

While human vision spans 220°, traditional functional MRI setups display images only up to central 10-15°. Thus, it remains unknown how the brain represents a scene perceived across the full visual field. Here, we introduce a method for ultra-wide angle display and probe signatures of immersive scene representation. An unobstructed view of 175° is achieved by bouncing the projected image off angled-mirrors onto a custom-built curved screen. To avoid perceptual distortion, scenes are created with wide field-of-view from custom virtual environments. We find that immersive scene representation drives medial cortex with far-peripheral preferences, but shows minimal modulation in classic scene regions. Further, scene and face-selective regions maintain their content preferences even with extreme far-periphery stimulation, highlighting that not all far-peripheral information is automatically integrated into scene regions computations. This work provides clarifying evidence on content vs. peripheral preferences in scene representation and opens new avenues to research immersive vision.

摘要

虽然人类的视野跨度为 220°,但传统的功能磁共振成像设置只能显示中心 10-15°范围内的图像。因此,目前尚不清楚大脑如何表示整个视野感知到的场景。在这里,我们引入了一种超宽角显示方法,并探测沉浸式场景表示的特征。通过将投影图像从倾斜镜反射到定制的弯曲屏幕上,实现了 175°的无障碍视野。为了避免感知失真,使用来自定制的宽视场虚拟环境来创建场景。我们发现,沉浸式场景表示以远周边偏好驱动内侧皮质,但在经典场景区域显示出最小的调制。此外,即使受到极端远周边刺激,场景和面部选择区域也保持其内容偏好,这突出表明并非所有远周边信息都自动整合到场景区域计算中。这项工作为场景表示中的内容与周边偏好提供了明确的证据,并为沉浸式视觉研究开辟了新途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7d96/11213904/42a5e9a2c77e/41467_2024_49669_Fig1_HTML.jpg

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