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• W4290005614 abstract "Abstract Representations of visual and semantic information can overlap in human visual cortex, with the same neural populations exhibiting sensitivity to low-level features (orientation, spatial frequency, retinotopic position), and high-level semantic categories (faces, scenes). It has been hypothesized that this relationship between low-level visual and high-level category neural selectivity reflects natural scene statistics, such that neurons in a given category-selective region are tuned for low-level features or spatial positions that are diagnostic of the region’s preferred category. To address the generality of this “natural scene statistics” hypothesis, as well as how well it can account for responses to complex naturalistic images across visual cortex, we performed two complementary analyses. First, across a large set of rich natural scene images, we demonstrated reliable associations between low-level (Gabor) features and high-level semantic dimensions (indoor-outdoor, animacy, real-world size), with these relationships varying spatially across the visual field. Second, we used a large-scale fMRI dataset (the Natural Scenes Dataset) and a voxelwise forward encoding model to estimate the feature and spatial selectivity of neural populations throughout visual cortex. We found that voxels in category-selective visual regions exhibit systematic biases in their feature and spatial selectivity which are consistent with their hypothesized roles in category processing. We further showed that these low-level tuning biases are largely independent of viewed image category. Together, our results are consistent with a framework in which low-level feature selectivity contributes to the computation of high-level semantic category information in the brain." @default.
• W4290005614 created "2022-08-06" @default.
• W4290005614 creator A5008604805 @default.
• W4290005614 creator A5014896739 @default.
• W4290005614 creator A5070257872 @default.
• W4290005614 date "2022-08-06" @default.
• W4290005614 modified "2023-10-17" @default.
• W4290005614 title "Low-level tuning biases in higher visual cortex reflect the semantic informativeness of visual features" @default.
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• W4290005614 doi "https://doi.org/10.1101/2022.08.04.502850" @default.
• W4290005614 hasPublicationYear "2022" @default.
• W4290005614 type Work @default.

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