Selecting and perceiving multiple visual objects

Trends Cogn Sci. 2009 Apr;13(4):167-74. doi: 10.1016/j.tics.2009.01.008. Epub 2009 Mar 9.

Abstract

To explain how multiple visual objects are attended and perceived, we propose that our visual system first selects a fixed number of about four objects from a crowded scene based on their spatial information (object individuation) and then encode their details (object identification). We describe the involvement of the inferior intra-parietal sulcus (IPS) in object individuation and the superior IPS and higher visual areas in object identification. Our neural object-file theory synthesizes and extends existing ideas in visual cognition and is supported by behavioral and neuroimaging results. It provides a better understanding of the role of the different parietal areas in encoding visual objects and can explain various forms of capacity-limited processing in visual cognition such as working memory.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Attention / physiology
  • Brain Mapping*
  • Cognition / physiology*
  • Humans
  • Identification, Psychological
  • Memory, Short-Term / physiology
  • Models, Neurological
  • Parietal Lobe / anatomy & histology*
  • Parietal Lobe / physiology*
  • Pattern Recognition, Visual / physiology*
  • Photic Stimulation / methods
  • Reaction Time / physiology
  • Visual Pathways / anatomy & histology
  • Visual Pathways / physiology