A real-world size organization of object responses in occipitotemporal cortex.

A real-world size organization of object responses in occipitotemporal cortex.
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DOI:
10.1016/j.neuron.2012.04.036
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发表时间:
2012-06-21
期刊:
影响因子:
16.2
通讯作者:
Oliva A
Oliva A
中科院分区:
医学1区
文献类型:
--
作者:
Konkle T;Oliva A

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虽然枕颞叶皮层有选择性的区域对面孔、字母和身体做出反应,但大多数物体类别的大规模神经组织仍然未知。在这里,我们发现,对象的表征可以区分沿着腹侧颞叶皮层由他们的现实世界的大小。在一项功能性神经成像实验中,观察者被展示了大小相同的真实世界物体(例如桌子、浴缸、回形针、杯子)的图片。我们观察到一个一致的中间到横向组织的大小物体的偏好在腹侧颞叶皮层,反映沿着侧表面。枕叶外侧、颞下和海马旁皮质的区域显示出强烈的差异现实世界大小选择性峰值,并保持这些偏好超过视网膜大小和心理意象的变化。这些数据表明,真实世界的大小的对象可以提供洞察对象表示的空间地形。
While there are selective regions of occipito-temporal cortex that respond to faces, letters, and bodies, the large-scale neural organization of most object categories remains unknown. Here we find that object representations can be differentiated along the ventral temporal cortex by their real-world size. In a functional neuroimaging experiment, observers were shown pictures of big and small real-world objects (e.g. table, bathtub; paperclip, cup), presented at the same retinal size. We observed a consistent medial-to-lateral organization of big and small object preferences in the ventral temporal cortex, mirrored along the lateral surface. Regions in the lateral-occipital, infero-temporal, and parahippocampal cortices showed strong peaks of differential real-world size selectivity, and maintained these preferences over changes in retinal size and in mental imagery. These data demonstrate that the real-world size of objects can provide insight into the spatial topography of object representation.
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