Results 181 to 190 of about 2,932 (212)
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The effect of modulating top-down attention deployment on the N2pc/PCN
Biological Psychology, 2016The 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.
Guang Zhao, Debi Roberson
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N2pc is modulated by stimulus–stimulus, but not by stimulus–response incompatibilities
Biological Psychology, 2013Studies of the N2pc in Simon-type tasks have revealed inconsistent results. That is, N2pc was only modulated when a stimulus-stimulus (S-S) overlap covaries with the stimulus-response (S-R) overlap. The present study aimed to establish whether N2pc is modulated by the S-R or by the S-S overlap.
Jesús Cespón
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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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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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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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Modelling the N2pc and Its Interaction with Value
2007Attention and emotion are closely interlinked and recent results have shown some of the neuro-physiological details of the effects of attention on emotion through the distractor devaluation (DD) effect. We develop a possible neural attention control architecture to explain the DD effect, and show by specific simulation how the N2pc (an early component ...
John G. Taylor, Nickolaos Fragopanagos
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The Simon effect modulates N2cc and LRP but not the N2pc component
International Journal of Psychophysiology, 2012Previous studies have reported that the horizontal arrangement of the stimuli in Simon tasks elicits three different components: LRP, N2pc and N2cc. Although N2cc may play a key role in Simon tasks, as it is involved in preventing responses based on stimulus position, modulation of the N2cc component according to the experimental conditions has not ...
J, Cespón, S, Galdo-Álvarez, F, Díaz
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Stimulus intensity affects the latency but not the amplitude of the N2pc
NeuroReport, 2007The N2pc component of the event-related potential (ERP) is an index of visual-spatial attention. It is not clear whether the N2pc reflects pure top-down attentional activity or an interaction of top-down activity with bottom-up sensory activity. Here, we manipulated stimulus intensity of the items composing the target display. Although the amplitude of
Benoit, Brisson +2 more
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Does temporal preparation speed up visual processing? Evidence from the
AbstractA growing number of studies show that temporal preparation, which denotes processes of anticipation and preparation for an upcoming stimulus, facilitates perceptual processing. Recently, it has been hypothesized that this perceptual benefit arises due to an acceleration of early perceptual processing.
Seibold, Verena C., Rolke, Bettina
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Towards a brain computer interface based on the N2pc event-related potential
2013 6th International IEEE/EMBS Conference on Neural Engineering (NER), 2013Research over the last decade has shown that brain-computer interfaces (BCI) based on electroencephalography (EEG) can provide an alternative input paradigm for both clinical and healthy populations. Currently, the majority of BCI paradigms rely on a limited number of brain potentials; thus there remain many EEG signals to be explored for BCI ...
Hani Awni +4 more
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