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Cited by 244Visual perception and processing mechanismsFace Recognition and PerceptionMultisensory perception and integration

Neurons in monkey visual area V2 encode combinations of orientations

Anzai, Akiyuki, Peng, Xinmiao, Van Essen, David C·2007·Nature Neuroscience
DOI 10.1038/nn1975
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Abstract

Contours and textures are important attributes of object surfaces, and are often described by combinations of local orientations in visual images. To elucidate the neural mechanisms underlying contour and texture processing, we examined receptive field (RF) structures of neurons in visual area V2 of the macaque monkey for encoding combinations of orientations. By measuring orientation tuning at several locations within the classical RF, we found that a majority (70%) of V2 neurons have similar orientation tuning throughout the RF. However, many others have RFs containing subregions tuned to different orientations, most commonly about 90 degrees apart. By measuring interactions between two positions within the RF, we found that approximately one-third of neurons show inhibitory interactions that make them selective for combinations of orientations. These results indicate that V2 neurons could play an important role in analyzing contours and textures and could provide useful cues for surface segmentation.

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Crossref · 10.1038/nn1975

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  • The size and complexity of receptive fields increases as one progresses through the visual hierarchy.

    “The size and complexity of receptive fields increases as one progresses through the visual hierarchy: in the retina/LGN receptive fields respond preferentially to spots of light, in V1 they are tuned for orientation (preferring lines or bars) (12), and in area V2 they respond preferentially to corners or junctions (13), whereas in V4 they prefer more complex feature arrangements (14).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [13]

  • In area V2, receptive fields respond preferentially to corners or junctions.

    “The size and complexity of receptive fields increases as one progresses through the visual hierarchy: in the retina/LGN receptive fields respond preferentially to spots of light, in V1 they are tuned for orientation (preferring lines or bars) (12), and in area V2 they respond preferentially to corners or junctions (13), whereas in V4 they prefer more complex feature arrangements (14).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [13]

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Authors
Anzai, A., Peng, X., & Van Essen, D. C.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Anzai, Akiyuki
Venue
Nature Neuroscience
Publisher
Springer Science and Business Media LLC
Published
2007-09-16
Volume
10
Issue
10
Pages
1313-1321
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
DOI
10.1038/nn1975
OpenAlex
W1983729723
Cited by
244
References
41
Citations by year
2026: 3 · 2025: 4 · 2024: 8 · 2023: 5 · 2022: 6 · 2021: 16 · 2020: 14 · 2019: 23 · 2018: 14 · 2017: 17 · 2016: 20 · 2015: 13 · 2014: 12 · 2013: 22 · 2012: 17
FWCI
6.16
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Eye Institute (EY-02091, R01EY002091)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
Keywords
visual area V2, orientation tuning, receptive field structure, contour processing, texture processing, inhibitory interactions, surface segmentation
MeSH terms
Action Potentials, Animals, Behavior, Animal, Macaca mulatta, Neurons, Orientation, Photic Stimulation, Visual Cortex, Visual Perception

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