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Temporal variability of the N2pc during efficient and inefficient visual search
Neuropsychologia, 2012Efficient 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 R Dowdall, Artur Luczak
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The N2pc component in ERP and the lateralization effect of language on color perception
Neuroscience Letters, 2009This 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
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The N2pc component as an indicator of attentional selectivity
Electroencephalography and Clinical Neurophysiology, 1996Event-related potentials (ERPs) were recorded during visual discrimination tasks in which stimulus arrays were presented that contained one lateral target and 3 (experiment 1) or one (experiments 2 and 3) non-targets. In experiments 1 and 2, targets differed from non-targets with respect to their form or their color.
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The N2pc as an Electrophysiological Correlate of Attention in Change Blindness
Journal of Psychophysiology, 2009Changes between two successively presented pictures are hard to detect when their presentation is interrupted by a blank (change blindness). This task is well established for investigating the neural correlates of visual awareness. It allows the comparison of electrophysiological activity evoked by physically identical trials in which the change was ...
Andrea Schankin +2 more
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Parsing attentional processes involved in the elicitation of the N2pc component
NeuroReport, 2019The elicitation of the N2pc event-related potential component is commonly thought to be related to attentional processes involved in the selection of lateralized target information. However, it has recently been suggested that this component may reflect the localization of visual information in preparation of selection processes.
Anthony P, Drew, Aaron T, Karst
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Fundamental properties of the N2pc as an index of spatial attention: Effects of masking.
Canadian Journal of Experimental Psychology / Revue canadienne de psychologie expérimentale, 2006Masking is an important tool in many paradigms used to study the cognitive architecture. The N2pc is an electrophysiological event-related potential (ERP) that has been used as a tool to study the deployment of visual spatial attention. The aim of this paper was to study the effects of masking on the N2pc.
Nicolas, Robitaille, Pierre, Jolicoeur
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N2pc reflects two modes for coding the number of visual targets
Psychophysiology, 2018AbstractHumans share with a variety of animal species the spontaneous ability to detect the numerical correspondence between limited quantities of visual objects and discrete auditory events. Here, we explored how such mental representation is generated in the visual modality by monitoring a parieto‐occipital ERP component, N2pc, whose amplitude ...
Silvia Benavides-Varela +8 more
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The amplitude of N2pc reflects the physical disparity between target item and distracters
Neuroscience Letters, 2011The N2pc component of the event-related potentials is assumed to indicate attentional filtering processes during visual search tasks. In this study, we investigated the effects of physical disparity between a target stimulus and distracter stimuli and discrimination difficulty of the target item, on N2pc component by recording event-related potentials (
Guang Zhao, Qinglin Zhang
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N2pc and PD to salient items with different relevance to the task
2022In our previous study (https://osf.io/cwrua), we wanted to know how attention to a salient item changes based on its relevance to our task, and how it affects our performance depending on its relevance. We conducted an experiment in which we manipulated the proportion of salient distractors and target (i.e., a red letter between all white letters), in ...
Manini, Greta +4 more
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Dissociation of the N2pc and sustained posterior contralateral negativity in a choice response task
Brain Research, 2008The 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 +2 more
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