Adaptive control of event integration: Evidence from event-related potentials

Elkan G. Akyürek, Patricia M. Riddell, Paolo Toffanin, Bernhard Hommel

Research output: Contribution to journalArticleAcademicpeer-review

46 Citations (Scopus)

Abstract

We investigated whether it is possible to control the temporal window of attention used to rapidly integrate visual information. To study the underlying neural mechanisms, we recorded ERPs in an attentional blink task, known to elicit Lag-1 sparing. Lag-1 sparing fosters joint integration of the two targets, evidenced by increased order errors. Short versus long integration windows were induced by showing participants mostly fast or slow stimuli. Participants expecting slow speed used a longer integration window, increasing joint integration. Difference waves showed an early (200 ms post-T2) negative and a late positive modulation (390 ms) in the fast group, but not in the slow group. The modulations suggest the creation of a separate event for T2, which is not needed in the slow group, where targets were often jointly integrated. This suggests that attention can be guided by global expectations of presentation speed within tens of milliseconds.

Original languageEnglish
Pages (from-to)383-391
Number of pages9
JournalPsychophysiology
Volume44
Issue number3
DOIs
Publication statusPublished - May-2007

Keywords

  • attentional blink
  • event-related potentials
  • Lag-1 sparing
  • event integration
  • SERIAL VISUAL PRESENTATION
  • ATTENTIONAL BLINK
  • ELECTROPHYSIOLOGICAL EVIDENCE
  • TASK
  • SUPPRESSION
  • CAPACITY
  • TIME

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