Neural response to perception of volume in the lateral occipital complex
Neural response to perception of volume in the lateral occipital complex
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DOI：
10.1016/s0896-6273(01)00197-0
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发表时间：
2001-01-01
期刊：
影响因子：
16.2
通讯作者：
Engel, SA
中科院分区：
文献类型：
--
作者：
Moore, C;Engel, SA
将3D场景投影到2D视网膜上必然会导致信息丢失，但感知者会体验到一个充满体积对象的世界。使用同时的行为和神经(FMRI)测量，我们确定了容量知觉的神经基础。与2D形状相比，在3D体积中，枕叶外侧皮质的神经活动随着呈现的增加而增加。神经活动也受感知体积的调节，与图像信息无关。当行为反应表明观察者将模棱两可的图像视为3D体积时，神经反应增加；当行为数据显示为2D解释时，神经反应减弱。至关重要的是，在两种解释下，身体刺激是相同的；只有对体积的感知才能解释神经活动的增加。
Projection of a 3D scene onto the 2D retina necessarily entails a loss of information, yet perceivers experience a world populated with volumetric objects. Using simultaneous behavioral and neural (fMRI) measures, we identify neural bases of volume perception. Neural activity in the lateral occipital cortex increased with presentation bf 3D volumes relative to presentation of 2D shapes. Neural activity also modulated with perceived volume, independent of image information. When behavioral responses indicated that observers saw ambiguous images as 3D volumes, neural response increased; when behavioral data revealed a 2D interpretation, neural response waned. Crucially, the physical stimulus was identical under both interpretations; only the percept of volume can account for the increased neural activity.