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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Cortex
Article . 2009 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
Cortex
Article . 2009
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Attention selection, distractor suppression and N2pc

Authors: Mazza, Veronica; Turatto, Massimo; Caramazza, Alfonso;

Attention selection, distractor suppression and N2pc

Abstract

N2pc is generally interpreted as the electrocortical correlate of the distractor-suppression mechanisms through which attention selection takes place in humans. Here, we present data that challenge this common N2pc interpretation. In Experiment 1, multiple distractors induced greater N2pc amplitudes even when they facilitated target identification, despite the suppression account of the N2pc predicted the contrary; in Experiment 2, spatial proximity between target and distractors did not affect the N2pc amplitude, despite resulting in more interference in response times; in Experiment 3, heterogeneous distractors delayed response times but did not elicit a greater N2pc relative to homogeneous distractors again in contrast with what would have predicted the suppression hypothesis. These results do not support the notion that the N2pc unequivocally mirrors distractor-suppression processes. We propose that the N2pc indexes mechanisms involved in identifying and localizing relevant stimuli in the scene through enhancement of their features and not suppression of distractors.

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United States, Italy
Related Organizations
Keywords

Adult, Cerebral Cortex, Analysis of Variance, Visual search, 150, Field Dependence-Independence, Attentional orienting, Distractor suppression, Event-related brain potentials, Inhibition, Psychological, Young Adult, Discrimination, Psychological, Reference Values, Attentional orienting; Distractor suppression; Event-related brain potentials; N2pc; Visual search;, N2pc, Adaptation, Psychological, Reaction Time, Humans, Attention, Psychological Theory, Evoked Potentials

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
184
Top 1%
Top 10%
Top 10%
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