Results 151 to 160 of about 2,185 (183)

Attentional propagation of conceptual information in the human brain

Acunzo D, Grignolio D, Hickey C.
europepmc   +1 more source

Attention selection, distractor suppression and N2pc

Cortex, 2009
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 ...
Alfonso Caramazza, Veronica Mazza
exaly   +6 more sources

Temporal variability of the N2pc during efficient and inefficient visual search

Neuropsychologia, 2012
Efficient and inefficient visual search are characterized by the difference in the time required to find the target. Efficient "popout" search time is relatively unaffected by increases in the number of search items, whereas inefficient "non-popout" search time requires more time increases in duration.
Jarrod Robert Dowdall, Artur Luczak
exaly   +5 more sources

The effect of modulating top-down attention deployment on the N2pc/PCN

Biological Psychology, 2016
The N2pc (PCN) component of the event-related potential (ERP) waveform provides a useful tool for directly assessing the locus of spatial attention in visual search. It is still unclear whether the amplitude of the N2pc/PCN relates to the deployment of attentional resources.
Debi Roberson, Guang Zhao
exaly   +5 more sources

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Eye movements are not mandatorily preceded by the N2pc component

Psychophysiology, 2021
AbstractResearchers typically distinguish between two mechanisms of attentional selection in vision: overt and covert attention. A commonplace assumption is that overt eye movements are automatically preceded by shifts of covert attention during visual search.
Travis Talcott, Nicholas Gaspelin
exaly   +3 more sources

Reorienting of spatial attention in gaze cuing is reflected in N2pc

Social Neuroscience, 2011
Research has shown that gaze cuing of attention is reflected in the modulation of P1 and N1 components of ERPs time-locked to target onset. Studies focusing on cue-locked analyses have produced mixed results. The present study examined ERP reflections of gaze cuing in further detail by recording electric brain activity from the scalp of participants ...
Giovanni Galfano, Michela Sarlo, Luis J. Fuentes   +2 more
exaly   +3 more sources

The N2pc component in ERP and the lateralization effect of language on color perception

Neuroscience Letters, 2009
This study examined the electrophysiological bases of the effect of language on color perception. In a visual search task, a target was presented to the left or right visual field. The target color was either from the same category as a set of distractors (within-category condition) or from a different category (between-category condition).
Ye Zhang, Qiang Liu, Jennifer L Campos
exaly   +4 more sources

Dissociation of the N2pc and sustained posterior contralateral negativity in a choice response task

Brain Research, 2008
The N2pc, a greater negativity at posterior electrodes on the side contralateral to an attended visual stimulus, usually between 180 and 280 ms, is thought to reflect the moment-to-moment deployment of visual-spatial attention. In tasks that require the retention of information in visual short-term memory, there is also a sustained posterior ...
Benoit Brisson, Nicolas Robitaille, Pierre Jolicoeur   +2 more
exaly   +3 more sources

Effects of eccentricity on the attention-related N2pc component of the event-related potential waveform [PDF]

Psychophysiology, 2020
The N2pc ERP component has been widely used as a measure of lateralized visual attention. It is characterized by a negativity contralateral to the attended location or target, and it is thought to reflect contralaterally enhanced processing of attended ...
Steven J. Luck, Orestis Papaioannou
exaly   +2 more sources

Effect of cue–target interval on the N2pc

NeuroReport, 2006
The N2pc component of the event-related potential occurs when participants must select and process a lateralized visual target, often in the presence of one or more distractors. The goal of this research was to determine whether the N2pc reflects unique processing related to the treatment of the target or whether it reflects processing related to the ...
Nicolas, Robitaille, Pierre, Jolicoeur
openaire   +2 more sources