ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021
A Gradient of Sharpening Effects by Perceptual Prior across the Human Cortical Hierarchy.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Determinants of visual ambiguity resolution.Communications psychology · 2026Article
- Article
- Neural and computational mechanisms underlying one-shot perceptual learning in humans.Nature communications · 2026Article
- Neural mechanisms in resolving prior and likelihood uncertainty in scene recognition.iScience · 2025Article
- Prediction error processing and sharpening of expected information across the face-processing hierarchy.Nature communications · 2024Article
- Perceptual transitions between object rigidity and non-rigidity: Competition and cooperation among motion energy, feature tracking, and shape-based priors.Journal of vision · 2024Article
- Context-dependent neural preparation for information relevance vs. probability.Imaging neuroscience (Cambridge, Mass.) · 2024Article
- Prior probability biases perceptual choices by modulating the accumulation rate, rather than the baseline, of decision evidence.Imaging neuroscience (Cambridge, Mass.) · 2024Article
- Spatiotemporal Dynamics of Memory Encoding and Memory Retrieval States.Journal of cognitive neuroscience · 2023Article
- Hierarchical fluctuation shapes a dynamic flow linked to states of consciousness.Nature communications · 2023Article
- Article
- Towards a pluralistic neurobiological understanding of consciousness.Trends in cognitive sciences · 2023Review
- One-trial perceptual learning in the absence of conscious remembering and independent of the medial temporal lobe.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
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2 authors.
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Abstract
Prior knowledge profoundly influences perceptual processing. Previous studies have revealed consistent suppression of predicted stimulus information in sensory areas, but how prior knowledge modulates processing higher up in the cortical hierarchy remains poorly understood. In addition, the mechanism leading to suppression of predicted sensory information remains unclear, and studies thus far have revealed a mixed pattern of results in support of either the "sharpening" or "dampening" model. Here, using 7T fMRI in humans (both sexes), we observed that prior knowledge acquired from fast, one-shot perceptual learning sharpens neural representation throughout the ventral visual stream, generating suppressed sensory responses. In contrast, the frontoparietal and default mode networks exhibit similar sharpening of content-specific neural representation, but in the context of unchanged and enhanced activity magnitudes, respectively: a pattern we refer to as "selective enhancement." Together, these results reveal a heretofore unknown macroscopic gradient of prior knowledge's sharpening effect on neural representations across the cortical hierarchy.
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