title: Curvature-processing network in macaque visual cortex.
abstract: Our visual environment abounds with curved features. Thus, the goal of understanding visual processing should include the processing of curved features. Using functional magnetic resonance imaging in behaving monkeys, we demonstrated a network of cortical areas selective for the processing of curved features. This network includes three distinct hierarchically organized regions within the ventral visual pathway: a posterior curvature-biased patch (PCP) located in the near-foveal representation of dorsal V4, a middle curvature-biased patch (MCP) located on the ventral lip of the posterior superior temporal sulcus (STS) in area TEO, and an anterior curvature-biased patch (ACP) located just below the STS in anterior area TE. Our results further indicate that the processing of curvature becomes increasingly complex from PCP to ACP. The proximity of the curvature-processing network to the well-known face-processing network suggests a possible functional link between them.
authors.affiliation: Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892; and yuex@mail.nih.gov ungerlel@mail.nih.gov.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Yue
authors.affiliation: Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892; and.
authors.forename: Irene S
authors.initials: IS
authors.lastname: Pourladian
authors.affiliation: Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892; andMartinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA 02129.
authors.forename: Roger B H
authors.initials: RB
authors.lastname: Tootell
authors.affiliation: Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892; and yuex@mail.nih.gov ungerlel@mail.nih.gov.
authors.forename: Leslie G
authors.initials: LG
authors.lastname: Ungerleider
mesh_terms: D000818:Animals; D008253:Macaca mulatta / Q000502:physiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D014793:Visual Cortex / Q000502:physiology*
keywords: curvature patches; curved Gabor filters; face patches
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