The organization of orientation-selective, luminance-change and binocular- preference domains in the second (V2) and third (V3) visual areas of new world owl monkeys as revealed by intrinsic signal optical imaging

Peter M. Kaskan, Haidong D. Lu, Barbara C. Dillenburger, Jon H. Kaas, Anna W. Roe

Research output: Contribution to journalArticle

27 Scopus citations


Optical imaging was used to map patterns of visually evoked activation in the second (V2) and third (V3) visual areas of owl monkeys. Modular patterns of activation were produced in response to stimulation with oriented gratings, binocular versus monocular stimulation, and stimuli containing wide-field luminance changes. In V2, luminance-change domains tended to lie between domains selective for orientation. Regions preferentially activated by binocular stimulation co-registered with orientation-selective domains. Co-alignment of images with cytochrome oxidase (CO)-processed sections revealed functional correlates of 2 types of CO-dense regions in V2. Orientation-responsive domains and binocular domains were correlated with the locations of CO-thick stripes, and luminance-change domains were correlated with the locations of CO-thin stripes. In V3, orientation preference, luminance-change, and binocular preference domains were observed, but were more irregularly arranged than those in V2. Our data suggest that in owl monkey V2, consistent with that in macaque monkeys, modules for processing contours and binocularity exist in one type of compartment and that modules related to processing-surface features exist within a separate type of compartment.

Original languageEnglish (US)
Pages (from-to)1394-1407
Number of pages14
JournalCerebral Cortex
Issue number6
StatePublished - Jun 1 2009



  • Evolution
  • Optical imaging
  • Owl monkey
  • V2
  • V3
  • Visual cortex

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Cellular and Molecular Neuroscience

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