ERP Evidence for Implicit Priming of Top-Down Control of Attention

Journal of Cognitive Neuroscience
Chris BlaisGeorge R Mangun

Abstract

Proportion congruency effects are the observation that the magnitude of the Stroop effect increases as the proportion of congruent trials in a block increases. Contemporary work shows that proportion effects can be specific to a particular context. For example, in a Simon task in which items appearing above fixation are mostly congruent and items appearing below fixation are mostly incongruent, the Simon effect is larger for the items appearing at the top. There is disagreement as to whether these context-specific effects result from simple associative learning or, instead, a type of conflict-mediated associative learning. Here, we address this question in an ERP study using a Simon task in which the proportion congruency effect was context-specific, manipulating the proportion of congruent trials based on location (upper vs. lower visual field). We found significant behavioral proportion congruency effects that varied with the specific contexts. In addition, we observed that the N2 response of the ERPs to the stimuli was larger in amplitude for the high congruent (high conflict) versus low congruent (low conflict) conditions/contexts. Because the N2 is known to be greater in amplitude also for trials where conflict is high and...Continue Reading

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Citations

Mar 30, 2017·Psychophysiology·Peter S WhiteheadChris Blais
Jan 16, 2021·The European Journal of Neuroscience·Bingxin ZhuoFuhong Li
Feb 16, 2021·Frontiers in Human Neuroscience·Lasse GüldenerStefan Pollmann

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