Refining the resource model: Cortical competition could explain hemifield independence

John Clevenger, Diane M. Beck

Research output: Contribution to journalArticlepeer-review


A growing number of studies find that we can select independently from the right and left hemifields, prompting some to suggest separate resources in the two hemispheres. Here we report an experiment suggesting that competition between representations, rather than exhaustion of resources, underlies these effects. Subjects searched a briefly displayed array for one of two targets. Subjects were slower to detect a target when it shared a hemifield with the distractors than when the distractors appeared in the opposite hemifield. Importantly however, this only occurred when the array was dense, suggesting that competition, rather than hemifield-specific resources, explains the decrement.

Original languageEnglish (US)
Pages (from-to)1022-1026
Number of pages5
JournalVisual Cognition
Issue number8
StatePublished - Sep 13 2014


  • Attention
  • Competition
  • Hemifield effect

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience


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