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Abstract #1247

Layer-dependent repetition suppression in the human visual cortex

Uk-Su Choi1,2, Seiji Ogawa3, and Ikuhiro Kida1,2
1Center for Information and Neural Networks, NICT, Suita, Japan, 2Graduate School of Frontier Biosciences, Osaka University, Suita, Japan, 3Kansei Fukushi Research Institute, Tohoku Fukushi University, Sendai, Japan

To examine the layer-dependent fMRI responses of face processing in human visual cortex, we acquired submillimeter functional and anatomical data at 7T. Here, we measured fMRI responses to left single and paired faces with various interstimulus intervals; furthermore, we calculated the repetition suppression (RS) ratio from three cortical layers in the right primary visual cortex (V1) and occipital face area (OFA). The fMRI response and RS ratio of superficial and middle layers of the right V1 were similar to those of all right OFA layers. Hence, the layers in different hierarchical visual areas were modulated in the same manner.

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