期刊
NEUROIMAGE
卷 57, 期 2, 页码 482-494出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2011.04.056
关键词
Material perception; fMRI; Multivoxel pattern analysis; Image statistics; Texture; Visual cortex
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [17022040, 22135007]
- Japan Society for the Promotion of Science [19700254, 22500248]
- National Institute for Physiological Sciences
- Grants-in-Aid for Scientific Research [22135001, 10J04395, 22135007, 22500248, 17022040, 19700254] Funding Source: KAKEN
Every object in the world has its own surface quality that is a reflection of the material from which the object is made. We can easily identify and categorize materials (wood, metal, fabric etc.) at a glance, and this ability enables us to decide how to interact appropriately with these objects. Little is known, however, about how materials are represented in the brain, or how that representation is related to material perception or the physical properties of material surface. By combining multivoxel pattern analysis of functional magnetic resonance imaging data with perceptual and image-based physical measures of material properties, we found that the way visual information about materials is coded gradually changes from an image-based representation in early visual areas to a perceptual representation in the ventral higher-order visual areas. We suggest that meaningful information about multimodal aspects of real-world materials reside in the ventral cortex around the fusiform gyrus, where it can be utilized for categorization of materials. (C) 2011 Elsevier Inc. All rights reserved.
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