Interocular suppression prevents interference in a flanker task

Qiong Wu, Jonathan T.H. Lo Voi, Thomas Y. Lee, Melissa Ann Mackie, Yanhong Wu, Jin Fan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Executive control of attention refers to processes that detect and resolve conflict among competing thoughts and actions. Despite the high-level nature of this faculty, the role of awareness in executive control of attention is not well understood. In this study, we used interocular suppression to mask the flankers in an arrow flanker task, in which the flankers and the target arrow were presented simultaneously in order to elicit executive control of attention. Participants were unable to detect the flanker arrows or to reliably identify their direction when masked. There was a typical conflict effect (prolonged reaction time and increased error rate under flanker-target incongruent condition compared to congruent condition) when the flanker arrows were unmasked, while the conflict effect was absent when the flanker arrows were masked with interocular suppression. These results suggest that blocking awareness of competing stimuli with interocular suppression prevents the involvement of executive control of attention.

Original languageEnglish (US)
Article number1110
JournalFrontiers in Psychology
StatePublished - Aug 11 2015
Externally publishedYes


  • conflict effect
  • consciousness awareness
  • continuous flash suppression
  • executive control of attention
  • flanker task

ASJC Scopus subject areas

  • Psychology(all)


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