Prediction, context, and competition in visual recognition

Sabrina Trapp, Moshe Bar

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Perception is substantially facilitated by top-down influences, typically seen as predictions. Here, we outline that the process is competitive in nature, in that sensory input initially activates multiple possible interpretations, or perceptual hypotheses, of its causes. This raises the question of how the selection of the correct interpretation from among those multiple hypotheses is achieved. We first review previous findings in support of such a competitive nature of perceptual processing, and then propose which neural regions might provide a platform for rising and using expectations to resolve this competition. Specifically, we propose that it is the rapid extraction and top-down dissemination of a global context signal from the frontal cortices, particularly the orbitofrontal cortex, that affords the quick and reliable resolution of the initial competition among likely alternatives toward a singular percept.

Original languageEnglish
Pages (from-to)190-198
Number of pages9
JournalAnnals of the New York Academy of Sciences
Volume1339
Issue number1
DOIs
StatePublished - 1 Mar 2015

Bibliographical note

Publisher Copyright:
© 2015 New York Academy of Sciences.

Keywords

  • Biased competition
  • Expectations
  • Object recognition
  • Orbitofrontal cortex
  • Perceptual hypothesis
  • Perceptual task
  • Top-down

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