Related Experiment Video
Updated: Aug 13, 2026

Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
Coactivation in the perception of redundant targets
1Department of Psychology, University of Illinois, Urbana-Champaign 61820.
Abstract:
Reaction time (RT) to redundant stimuli was investigated while controlling for distraction effects and response competition. In Experiment 1, a redundancy gain was found for 2 target letters with identical features (redundant) compared to trials in which 2 different targets shared the same response assignment (compatible) indicating coactivation of stimulus inputs. No difference in RTs was found between compatible displays and displays containing 2 targets with different responses (incompatible), suggesting (with other evidence) that letters were serially processed. In Experiment 2, a redundancy gain was again found. Unlike in Experiment 1, incompatible displays produced response competition, indicating a redundancy gain with parallel processing. Three forms of redundancy gains operating under specific conditions are discussed.
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