Functional imaging of human crossmodal identification and object recognition
Functional imaging of human crossmodal identification and object recognition
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DOI：
10.1007/s00221-005-2396-5
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发表时间：
2005-10-01
影响因子：
2
通讯作者：
Naumer, MJ
中科院分区：
文献类型：
--
作者：
Amedi, A;von Kriegstein, K;Naumer, MJ
对物体的感知是最重要的认知功能。在日常生活中，物体感知得益于视觉、听觉和触觉的协调相互作用。不同的感觉模式提供了关于对象的互补和冗余信息，这在许多情况下可以提高识别速度和准确性。我们回顾了主要使用功能磁共振成像(FMRI)的人类物体识别的跨模式研究。这些研究表明，关于物体的视觉、触觉和听觉信息可以激活曾经被认为是特定于形态的皮质关联区。加工要么在多感觉区内汇聚，要么通过通道特定皮质的直接交叉模式相互作用而不通过多感觉区进行传递。我们将这些发现与现有的语义加工理论相结合，提出了跨通道物体识别的一般机制：多感觉汇聚区的招募和定位取决于信息内容和主导通道。
The perception of objects is a cognitive function of prime importance. In everyday life, object perception benefits from the coordinated interplay of vision, audition, and touch. The different sensory modalities provide both complementary and redundant information about objects, which may improve recognition speed and accuracy in many circumstances. We review crossmodal studies of object recognition in humans that mainly employed functional magnetic resonance imaging (fMRI). These studies show that visual, tactile, and auditory information about objects can activate cortical association areas that were once believed to be modality-specific. Processing converges either in multisensory zones or via direct crossmodal interaction of modality-specific cortices without relay through multisensory regions. We integrate these findings with existing theories about semantic processing and propose a general mechanism for crossmodal object recognition: The recruitment and location of multisensory convergence zones varies depending on the information content and the dominant modality.