Visuo-haptic object-related activation in the ventral visual pathway
Visuo-haptic object-related activation in the ventral visual pathway
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DOI：
10.1038/85201
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发表时间：
2001-03-01
影响因子：
25
通讯作者：
Zohary, E
中科院分区：
文献类型：
--
作者：
Amedi, A;Malach, R;Zohary, E
腹侧通路参与灵长类视觉物体识别。在人类中，该通路的中心阶段是称为外侧枕叶复合体（lateral ocpital complex，简称OCP）的枕颞区，与杂乱的图像或纹理相比，OCP优先被视觉对象激活。然而，对象具有可以在视觉上和触觉上感知的特征属性（例如三维形状）。因此，与物体相关的大脑区域可以在两种模式中保持物体的表示。使用功能磁共振成像映射对象相关的大脑区域，我们发现了强大的和一致的体感激活枕颞叶皮层。这一地区表现出明显的偏好相比，在这两种方式的纹理对象。大多数躯体感觉对象选择体素重叠的视觉对象相关区域的一部分。因此，我们认为枕颞皮质中的神经元群体可能构成了一个多模态物体相关网络。
The ventral pathway is involved in primate visual object recognition. In humans, a central stage in this pathway is an occipito-temporal region termed the lateral occipital complex (LOC), which is preferentially activated by visual objects compared to scrambled images or textures. However, objects have characteristic attributes (such as three-dimensional shape) that can be perceived both visually and haptically. Therefore, object-related brain areas may hold a representation of objects in both modalities. Using fMRI to map object-related brain regions, we found robust and consistent somatosensory activation in the occipito-temporal cortex. This region showed clear preference for objects compared to textures in both modalities. Most somatosensory object-selective voxels overlapped a part of the visual object-related region LOG. Thus, we suggest that neuronal populations in the occipito-temporal cortex may constitute a multimodal object-related network.