Topographic change in ERP due to discrimination of geometric figures in the peripheral visual field

Shoji, Hiroaki; Ozaki, Hisaki

doi:10.1016/j.ijpsycho.2006.02.007

Cited by 6 publications

(4 citation statements)

References 31 publications

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“…The fourth and the fifth maps described the later components P2p and P3, which were examined only to detail the sequence of processing events subsequent to the initial effects of spatial attention. In particular, the parietal P2 has been hypothesized to be concerned with the perception of contour and/or angularity of geometric figures (Brandeis & Lehmann, 1989;Shoji & Ozaki, 2006) and it was reported not to be modulated by selective attention (Talsma et al, 2005). In the present study a longer-latency P3, most likely a P3b, was distributed mainly over the centro-parietal regions of the right hemisphere and was more prominent with textures in comparison to arrows and eye-gaze.…”

Section: Discussionsupporting

confidence: 43%

Attentional orienting induced by arrows and eye-gaze compared with an endogenous cue

et al. 2009

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Exogenous orienting has been widely studied by using peripheral cues whereas endogenous orienting has been studied with directional central cues. However, recent evidence has shown that centrally presented eye-gaze and arrows may produce an automatic rather than voluntary orienting of attention. Therefore, the aim of the present study was to investigate the behavioural and electrophysiological (event-related potentials-ERP) correlates of the attentional shift induced by arrows and eye-gaze. In order to have a control condition, we compared arrows and eye-gaze with a purely endogenous cue, i.e., a texture arbitrarily coding one direction. We analyzed the ERP components (P1, N1, P2a, P2p, P3) elicited by the cue stimuli and the early lateralised attentional effect (early directing attention negativity-EDAN). In addition, in order to investigate the topography of the neural mechanisms underlying the cortical activity in each cueing condition, we applied a temporal segmentation procedure. The results showed that the three cueing conditions induced a different strength of activation within the same cortical network. Occipito-parietal regions were involved in the early processing of visual information, followed by an involvement of frontal areas, likely implicated in learning associations. These data confirm the assumption that, in contrast to purely endogenous cues, arrows and eye-gaze induce a very fast attentional shift. However, the similarity of the ERP components and of the topographical cortical maps among conditions suggest that this early orienting of attention is more likely related to an overlearned association mechanism rather than to a real exogenous attentional process.

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Section: Discussionsupporting

confidence: 43%

Attentional orienting induced by arrows and eye-gaze compared with an endogenous cue

et al. 2009

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“…Although less well understood than the P3 component, the P2 component has been studied in particular in the context of visual search paradigms and is thought to be related to processes of selective attention [ 18 ]. In line with our results, several studies have reported a decreased P2 amplitude with increasing visual saliency [ 19 , 20 ]. Crucially, both the P2 and the P3 components were associated with the interaction between congruency and salience in our study.…”

Section: Discussionsupporting

confidence: 93%

“…In research in the field of vision, the P2 ERP component is thought to index selective attention processes [ 18 ]. In particular, several studies have reported a decreased P2 amplitude with increasing visual saliency in the context of visual search paradigms [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Event-Related Potentials Reveal the Impact of Conflict Strength in a Numerical Stroop Paradigm

2023

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Numerical cognition provides an opportunity to study the underlying processes of selective attention to numerical information in the face of conflicting, non-numerical, information of different magnitudes. For instance, in the numerical Stroop paradigm, participants are asked to judge pairs of Arabic digits whose physical size can either be congruent (e.g., 3 vs. 5) or incongruent (e.g., 3 vs. 5) with numerical value. Congruency effects when deciding which of the two digits is numerically larger are thought to reflect the inhibition of the irrelevant physical size. However, few studies have investigated the impact of the salience of the irrelevant non-numerical information on these congruency effects and their neural substrates. EEG was recorded in 32 adults during a numerical Stroop task with two levels of salience (low, high) of the irrelevant size dimension. At the behavioral level, we observed larger congruency effects in the high salience condition (i.e., when the difference in size between the two digits is larger). At the neural level, at centro-parietal electrodes, we replicated previous studies showing a main effect of congruency on event-related potential (ERP) amplitudes between 280 and 370 ms post-stimulus, as well as a main effect of salience around 200 ms post-stimulus. Crucially, congruency and salience interacted both between 230 and 250 ms (P2), and between 290 and 340 ms (P3). These results provide support for separate processes underlying the increase in congruency effect, which can be attributed to higher demands in both the inhibition of the irrelevant dimension, and the attention to the relevant numerical information.

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“…In general, ERP waveforms occurred at the parieto–occipito electrode sites during the 200–300-ms time window and were usually called P2p or P250 (Milivojevic, Clapp, Johnson, & Corballis, 2003; Zhao & Li, 2006). The P2p component has been hypothesized to be concerned with the perception of contour and/or angularity of geometric figures (Brignani et al, 2009; Shoji & Ozaki, 2006). Similar to the research (Bentin & Deouell, 2000; Keyes, Brady, Reilly, & Foxe, 2010), smaller P2p was evoked by faces with more degrees of familiarity.…”

Section: Discussionmentioning

confidence: 99%

Consumers’ different neural activity and attitude to the leading brand and imitator.

Zhang¹,

Guo²,

Li³

et al. 2018

Journal of Neuroscience, Psychology, and Economics

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Along with the rapidly growing world economy, copycats emerge everywhere. With visual similarity, copycats may mislead consumers to incorrectly link the copycats to familiar and leading brands. Copycat practices are serious challenges for the leading brands, consumers, and even imitators. In this study, the cognitive differences between a leading brand and a copycat brand were investigated subconsciously by using event-related potentials. Using a questionnaire on the leading brand and the copycat brand, consumers’ attitudes to perceived value of the brand, brand attitude, and purchase intentions were also studied. Electroencephalogram and survey results showed significant differences between the two brands. Consumers’ perceived value, brand attitude, and purchase intention of the leading brand were higher than the copycat brand. The copycat brand elicited a higher P160 and N240 at the front-central area and a higher P240 and lower P400 at the central-parietal area. We supposed that the amplitude variation in event-related potentials expressed different neural activity with regard to the target identification, cognitive control, automatic attention, and categorization mechanism between the original and the counterfeit. This study contributes to understanding the consumers’ different neural activity with regard to the original and the counterfeit and provides a feasible neuroscience-based method to perfect present theories and methodologies on issues concerning imitation. Exploration of the differences between the leading and copycat brands can help companies promote their brand and develop more reasonable marketing strategies.

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Topographic change in ERP due to discrimination of geometric figures in the peripheral visual field

Cited by 6 publications

References 31 publications

Attentional orienting induced by arrows and eye-gaze compared with an endogenous cue

Attentional orienting induced by arrows and eye-gaze compared with an endogenous cue

Event-Related Potentials Reveal the Impact of Conflict Strength in a Numerical Stroop Paradigm

Consumers’ different neural activity and attitude to the leading brand and imitator.

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