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Decomposing sources of response slowing in the PRP paradigm

Research output: Contribution to journalArticle

Author(s)

Ines Jentzsch, H Leuthold, R Ulrich

School/Research organisations

Abstract

The mechanism underlying the reaction time (RT2) slowing to the 2nd of 2 successively presented stimuli (S1 and S2) in the psychological refractory period paradigm was investigated. Stimulus onset synchrony (SOA) between S1 and S2, contrast of S2, and Task 2 set-level compatibility was manipulated. Specifically, the authors used a psychophysiological approach to examine RT2 slowing in trials in which the reaction time to S1 (RT1) was shorter than the SOA. For trials with RT1 < SOA, the clear decrease in RT2 with increasing SOA was underadditive with the S2 contrast effect, but additive with compatibility. Electrophysiological measures revealed an exclusively premotoric locus of RT2 slowing. These findings indicate that a central bottleneck stage is occupied for some period after response to S1 execution, consistent with an extended response selection bottleneck account.

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Details

Original languageEnglish
Pages (from-to)610-626
Number of pages17
JournalJournal of Experimental Psychology: Human Perception and Performance
Volume33
Issue number3
DOIs
Publication statusPublished - Jun 2007

    Research areas

  • dual-task interference, PRP effect, bottleneck, response monitoring, LRP, DUAL-TASK INTERFERENCE, PSYCHOLOGICAL REFRACTORY-PERIOD, SIMPLE COGNITIVE TASKS, REACTION-TIME, LRP ONSET, MULTIPLE BOTTLENECKS, CENTRAL POSTPONEMENT, EXECUTIVE CONTROL, PERFORMANCE, INFORMATION

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