A possible mechanism of curvature coding in early vision

Rodrigo F. Oliveira, Luciano da Fonoura Costa, Antonio C. Roque

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This paper addresses the issue of curvature coding in the mammalian visual system. Considering the successful account of cortical neurons as detectors of features of visual stimuli like orientation and spatial frequency among others, we discuss the role of curvature in visual processes, review some previous investigations on curvature and present a possible biologically plausible model of curvature detection. This model requires only orientation selective neurons (simple cells) and short-range connections, both known and well-documented features of the mammalian primary visual cortex. The dependence of the model on different parameters is explored and discussed.

Original languageEnglish (US)
Pages (from-to)117-124
Number of pages8
Issue numberSPEC. ISS.
StatePublished - Jun 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Cognitive Neuroscience
  • Artificial Intelligence


  • Contextual effects
  • Curvature detection
  • Orientation selectivity
  • Short-range connections
  • Visual system


Dive into the research topics of 'A possible mechanism of curvature coding in early vision'. Together they form a unique fingerprint.

Cite this