The allocation of attention in displays with simultaneously presented singletons

Elkan G Akyürek, Anna Schubö

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

In an ERP experiment, we investigated whether a 'permanent salient distractor changes the deployment of attention to target and nontarget singletons. Observers searched for a color target in a search array that mainly consisted of black vertical lines, but also always contained a line in a task-irrelevant color. Together with this distractor, a target or nontarget singleton was presented. Nontargets could be salient on the task-relevant dimension (color), or on a neutral dimension (line orientation). N2pc amplitude was maximal for targets, no N2pc was elicited by color nontargets, and orientation nontargets elicited an inverse N2pc. Targets and color nontargets elicited larger N2 amplitude than orientation singletons. P3 amplitude was high for relevant and low for irrelevant singletons. Targets also elicited higher reaction times and more errors. Attention seemed thus driven by the target feature, and by its feature dimension, even when constant distraction on that dimension had to be suppressed. (C) 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)218-225
Number of pages8
JournalBiological Psychology
Volume87
Issue number2
DOIs
Publication statusPublished - May-2011

Keywords

  • Attentional selection
  • Distraction
  • Event-related potential
  • N2
  • N2pc
  • P3
  • VISUAL-SEARCH
  • TASK SET
  • ELECTROPHYSIOLOGICAL EVIDENCE
  • PERCEPTUAL SELECTIVITY
  • BRAIN POTENTIALS
  • N2PC COMPONENT
  • CAPTURE
  • COLOR
  • CONTINGENT
  • STIMULI

Cite this