Figure-ground organization in visual cortex for natural scenes

Jonathan R. Williford, Joachim R Von Der Heydt

Research output: Contribution to journalArticle

Abstract

Figure-ground organization and border-ownership assignment are essential for understanding natural scenes. It has been shown that many neurons in the macaque visual cortex signal border-ownership in displays of simple geometric shapes such as squares, but how well these neurons resolve border-ownership in natural scenes is not known. We studied area V2 neurons in behaving macaques with static images of complex natural scenes. We found that about half of the neurons were border-ownership selective for contours in natural scenes, and this selectivity originated from the image context. The border-ownership signals emerged within 70 ms after stimulus onset, only ~30 ms after response onset. A substantial fraction of neurons were highly consistent across scenes. Thus, the cortical mechanisms of figure-ground organization are fast and efficient even in images of complex natural scenes. Understanding how the brain performs this task so fast remains a challenge.

Original languageEnglish (US)
Article numbere0127
JournaleNeuro
Volume3
Issue number6
DOIs
Publication statusPublished - Dec 15 2016

    Fingerprint

Keywords

  • Figure-ground
  • Macaque
  • Natural scenes
  • Single units
  • Visual cortex
  • Visual perception

ASJC Scopus subject areas

  • Medicine(all)

Cite this