ArticleProceedings of the National Academy of Sciences of the United States of America2022
Orientation anisotropies in macaque visual areas.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Re-emergence of orientation coding in primate IT cortex and deep networks reveals functional hubs for visual processing.bioRxiv : the preprint server for biology · 2026Article
- Exploration of brain function changes in the visual cortex of astigmatic subjects based on fNIRS.Scientific reports · 2026Article
- Do the receptive fields in the primary visual cortex span a variability over the degree of elongation of the receptive fields?Journal of computational neuroscience · 2025Article
- Reply to: "Model mimicry limits conclusions about neural tuning and can mistakenly imply unlikely priors".Nature communications · 2025Article
- Model mimicry limits conclusions about neural tuning and can mistakenly imply unlikely priors.Nature communications · 2025Article
- Orientation selectivity properties for the affine Gaussian derivative and the affine Gabor models for visual receptive fields.Journal of computational neuroscience · 2025Article
- Anisotropy of object nonrigidity: High-level perceptual consequences of cortical anisotropy.bioRxiv : the preprint server for biology · 2025Article
- Verbal Encoding Strategies in Visuo-Spatial Working Memory.Journal of cognition · 2025Article
- Discriminating orientation information with phase consistency in alpha and low-gamma frequency bands: an EEG study.Scientific reports · 2024Article
- Neural tuning instantiates prior expectations in the human visual system.Nature communications · 2023Article
- Natural scene sampling reveals reliable coarse-scale orientation tuning in human V1.Nature communications · 2022Article
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3 authors.
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Abstract
In mammals, a larger number of neurons in V1 are devoted to cardinal (horizontal and vertical) orientations than to oblique orientations. However, electrophysiological results from the macaque monkey visual cortex are controversial. Both isotropic and anisotropic orientation distributions have been reported. It is also unclear whether different visual areas along the visual hierarchy have different orientation anisotropies. We analyzed orientation maps in a large set of intrinsic signal optical imaging data and found that both V1 and V4 exhibited significant orientation anisotropies. However, their overrepresented orientations were very different: in V1, both cardinal and radial orientations were overrepresented, while in V4, only cardinal bias was presented. These findings suggest that different cortical areas have evolved to emphasize different features that are suitable for their functional purposes, a factor that needs to be considered when efforts are made to explain the relationships between the visual environment and the cortical representation and between the cortical representation and visual perception.
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