Positive and Negative Congruency Effects in Masked Priming: A Neuro-computational Model Based on Representation, Attention, and Conflict

Document Type: 
Article
Article Type: 
Experimental
Disciplines: 
Neuroscience
Topics: 
Computational Nueroscience
Keywords: 
masked priming, negative congruency effect, negative compatibility effect, attention
Date of Issue: 
2009
Authors: 
Sohrabi, Ahmad, West, Robert
Official URL: 
http://dx.doi.org/10.1016/j.brainres.2009.07.004
Publish status: 
Published
Abstract: 

Studies on masked and unmasked priming have long shown reliable positive effects of thecongruent prime on target processing. Paradoxically, a negative effect has also been found,showing faster and more accurate responses in the incongruent compared to the congruenttrials. Positive effects have been found with a short time between the prime and the target,while negative effects have been foundwitha long timebetween the prime and the target. Thishas been modeled by assuming that the prime initiates a motor self-inhibitory process thatcauses these effects (Bowman, H., Schlaghecken, F., Eimer,M., 2006. A neural networkmodel ofinhibitory processes and cognitive control. Vis. Cogn. 13, 401–480). We have developed analternative explanation based on attentional neuro-modulation. In this paper we show thatattentional neuro-modulation can be used to model a wide range of findings in this area.

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