Early Perception Research Articles

The impact of threat of shock-induced anxiety on alerting, orienting, and executive function in women: an ERP study.

The present study used a combination of the Threat-of-Shock paradigm and the Attention Network Test (ANT) to investigate how induced anxiety affects alerting, orienting, and executive control and whether individual differences in threat sensitivity moderate these effects. Forty-two female subjects completed the ANT task in alternation under shock-threat and no-shock ("safe") conditions while event-related potentials (ERPs) were recorded. The results showed that anxiety induced by the threat of shock had a significant impact on alerting and executive control functions at the neural level. Specifically, alerting-related N1 and stimulus-preceding negativity (SPN) differences between double cue and no cue conditions were greater in the threat versus safe state, suggesting that the induced anxiety promoted the early perception of cues and preparation for the target. Moreover, executive control-related P3 and sustained potential (SP) differences between incongruent and congruent trials were greater in the threat versus safe state, indicating that the induced anxiety might improve the attentional allocation efficiency and stimulate subjects to recruit more cognitive resources to resolve conflicts. However, orienting-related ERPs were not affected by the threat of shock, but the threat of shock promoted the processing efficiency of spatial-cue at the behavioral level. Analysis of individual differences revealed that trait anxiety moderated the attentional allocation efficiency when performing executive control related tasks in the threat versus safe state. Our findings demonstrate the adaptive significance of the threat of shock-induced anxiety in that being in an anxious state can enhance individuals' alerting, orienting, and executive functions.

Parent and self-socialization of gender intergroup attitudes, perceptions, and behaviors among ethnically and geographically diverse young children.

Previous work has shown the robust nature of gender bias in both children and adults. However, much less attention has been paid toward understanding what factors shape these biases. The current preregistered study used parent surveys and child interviews to test whether parents' conversations with their children about and modeling of gender intergroup relations and/or children's self-guided interests about gender (self-socialization) contribute to the formation of gender attitudes, status perceptions, and gender intergroup behaviors among young 4- to 6-year-old children. Our participant sample also allowed us to explore variation by child gender, ethnicity (Asian-, Black-, Latiné-, and White-American), and U.S. geographical region (Northeast, Pacific Northwest, West, Southeast, and Hawaii). Data suggest that children whose parents reported they were especially active in seeking information about gender tended to allocate more resources to same-gender versus other-gender children and expressed less positive evaluations of other-gender children in comparison to children who were less active. By contrast, we found that parents' conversations with their children about gender intergroup relations and about gender-play stereotypes showed few connections with children's gender attitudes. In terms of demographic differences, boys raised in households with more unequal versus equal division of labor perceived that men had higher status than women, but few differences by ethnicity or geographic region emerged. In sum, our study suggests that both self- and parent socialization processes are at play in shaping early gender attitudes, status perceptions, and gender intergroup behavior, although self-socialization seemed to play a larger role. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Deepfake smiles matter less—the psychological and neural impact of presumed AI-generated faces

High-quality AI-generated portraits (“deepfakes”) are becoming increasingly prevalent. Understanding the responses they evoke in perceivers is crucial in assessing their societal implications. Here we investigate the impact of the belief that depicted persons are real or deepfakes on psychological and neural measures of human face perception. Using EEG, we tracked participants’ (N = 30) brain responses to real faces showing positive, neutral, and negative expressions, after being informed that they are either real or fake. Smiling faces marked as fake appeared less positive, as reflected in expression ratings, and induced slower evaluations. Whereas presumed real smiles elicited canonical emotion effects with differences relative to neutral faces in the P1 and N170 components (markers of early visual perception) and in the EPN component (indicative of reflexive emotional processing), presumed deepfake smiles showed none of these effects. Additionally, only smiles presumed as fake showed enhanced LPP activity compared to neutral faces, suggesting more effortful evaluation. Negative expressions induced typical emotion effects, whether considered real or fake. Our findings demonstrate a dampening effect on perceptual, emotional, and evaluative processing of presumed deepfake smiles, but not angry expressions, adding new specificity to the debate on the societal impact of AI-generated content.

Single-trial visually evoked potentials predict both individual choice and market outcomes

A central assumption in the behavioral sciences is that choice behavior generalizes enough across individuals that measurements from a sampled group can predict the behavior of the population. Following from this assumption, the unit of behavioral sampling or measurement for most neuroimaging studies is the individual; however, cognitive neuroscience is increasingly acknowledging a dissociation between neural activity that predicts individual behavior and that which predicts the average or aggregate behavior of the population suggesting a greater importance of individual differences than is typically acknowledged. For instance, past work has demonstrated that some, but not all, of the neural activity observed during value-based decision-making is able to predict not just individual subjects’ choices but also the success of products on large, online marketplaces—even when those two behavioral outcomes deviate from one another—suggesting that some neural component processes of decision-making generalize to aggregate market responses more readily across individuals than others do. While the bulk of such research has highlighted affect-related neural responses (i.e. in the nucleus accumbens) as a better predictor of group-level behavior than frontal cortical activity associated with the integration of more idiosyncratic choice components, more recent evidence has implicated responses in visual cortical regions as strong predictors of group preference. Taken together, these findings suggest a role of neural responses during early perception in reinforcing choice consistency across individuals and raise fundamental scientific questions about the role sensory systems in value-based decision-making processes. We use a multivariate pattern analysis approach to show that single-trial visually evoked electroencephalographic (EEG) activity can predict individual choice throughout the post-stimulus epoch; however, a nominally sparser set of activity predicts the aggregate behavior of the population. These findings support an account in which a subset of the neural activity underlying individual choice processes can scale to predict behavioral consistency across people, even when the choice behavior of the sample does not match the aggregate behavior of the population.

Distinct early transcriptional regulations by turgor and osmotic potential in the roots of Arabidopsis.

In a context of climate change, deciphering signaling pathways driving plant adaptation to drought, changes in water availability, and salt is key. A crossing point of these plant stresses is their impact on plant water potential (Ψ), a composite physico-chemical variable reflecting the availability of water for biological processes such as plant growth and stomatal aperture. The Ψ of plant cells is mainly driven by their turgor and osmotic pressures. Here we investigated the effect of a variety of osmotic treatments on the roots of Arabidopsis plants grown in hydroponics. We used, among others, a permeating solute as a way to differentiate variations on turgor from variations in osmotic pressure. Measurement of cortical cell turgor pressure with a cell pressure probe allowed us to monitor the intensity of the treatments and thereby preserve the cortex from plasmolysis. Transcriptome analyses at an early time point (15 min) showed specific and quantitative transcriptomic responses to both osmotic and turgor pressure variations. Our results highlight how water-related biophysical parameters can shape the transcriptome of roots under stress and provide putative candidates to explore further the early perception of water stress in plants.

Does the speaker's eye gaze facilitate infants' word segmentation from continuous speech? An ERP study.

The environment in which infants learn language is multimodal and rich with social cues. Yet, the effects of such cues, such as eye contact, on early speech perception have not been closely examined. This study assessed the role of ostensive speech, signalled through the speaker's eye gaze direction, on infants' word segmentation abilities. A familiarisation-then-test paradigm was used while electroencephalography (EEG) was recorded. Ten-month-old Dutch-learning infants were familiarised with audio-visual stories in which a speaker recited four sentences with one repeated target word. The speaker addressed them either with direct or with averted gaze while speaking. In the test phase following each story, infants heard familiar and novel words presented via audio-only. Infants' familiarity with the words was assessed using event-related potentials (ERPs). As predicted, infants showed a negative-going ERP familiarity effect to the isolated familiarised words relative to the novel words over the left-frontal region of interest during the test phase. While the word familiarity effect did not differ as a function of the speaker's gaze over the left-frontal region of interest, there was also a (not predicted) positive-going early ERP familiarity effect over right fronto-central and central electrodes in the direct gaze condition only. This study provides electrophysiological evidence that infants can segment words from audio-visual speech, regardless of the ostensiveness of the speaker's communication. However, the speaker's gaze direction seems to influence the processing of familiar words. RESEARCH HIGHLIGHTS: We examined 10-month-old infants' ERP word familiarity response using audio-visual stories, in which a speaker addressed infants with direct or averted gaze while speaking. Ten-month-old infants can segment and recognise familiar words from audio-visual speech, indicated by their negative-going ERP response to familiar, relative to novel, words. This negative-going ERP word familiarity effect was present for isolated words over left-frontal electrodes regardless of whether the speaker offered eye contact while speaking. An additional positivity in response to familiar words was observed for direct gaze only, over right fronto-central and central electrodes.

Trajectories of early adolescents' perceptions of school motivation and effort during the pandemic in Perú: A four time point longitudinal observational study

In this longitudinal, observational study, following 883 adolescents (aged 11–15 years, grades 6th - 8th) we tracked changes in perceived school motivation and effort across four time points during the two years of remote education in Perú as a consequence of COVID-19 (retrospective reports before the pandemic, May 2020, July 2021, and November 2021). Compared to before the pandemic, levels of perceived school motivation and effort dropped sharply in May 2020 and continued to decrease across 2 years. Perceived school motivation was positively associated with perceived school effort at almost all time points. Furthermore, students with lower levels of perceived school motivation had a steeper decline in perceived school effort. In a subsample of 380 students in 8th grade, perceived school effort in July 2021 predicted objective math performance in November 2021. Our findings suggest that COVID-19 has further compounded decreases in subjective and objective indices of school engagement and performance that are typically observed in early adolescence. Our results from a large sample of low- to middle-class Peruvian adolescents highlight the experiences of youth in a country that had particularly long school closures, and that is under-represented in the literature.

The Succession of Farmers’ Perceptions of Transitioning Landscapes – A Case Study of Agroforestry in the Middle Hills of Nepal

Out-migration from small-scale agricultural holdings in Nepal’s middle hills is resulting in forest succession on abandoned land. Such early landscape transitions are often guided by policy to maintain a productivist path. However, farming households in rural Nepal are themselves transitioning from their dependence and attachment to the land. The walk and talk methodology was selected to follow up socioecological surveys with farmers in the middle hills to understand perceptions of forest succession on abandoned agricultural land. This participatory research methodology engages people in their own socio-ecological context – with farmers leading researchers along paths that advances dialogue over the course of the interview. Based on analysis of the discussions and observations of attitudes, perceptions of changing landuse and benefits associated with forest succession evolved with time since land abandonment. Early stage perceptions that focused on the loss of previously productive land developed over time to include attitudes of tolerance, acceptance and even commendation of the rewards gained from tree resources. The results infer that adaptation to the changing landscape is a continuous process that requires reflexive policies and supporting institutions that enable stages of adjustment during transition. Transition management that anticipates actors’ concerns from the outset could assist transformation of agricultural landscapes and improve resilience in the socio-ecological system for sustainable livelihood outcomes. Opportunities within each stage of transition, which include the promotion of successional agroforestry systems, require different forms of support as farmers adapt their outlooks to alternative landscapes and livelihoods that can create resilience through diversity.

The Impacts of Two Gender-Transformative Interventions on Early Adolescent Gender Norms Perceptions: A Difference-in-Difference Analysis

PurposeInequitable gender norms are widespread and can be harmful to the wellbeing of adolescents. This study estimates the effects of two gender-transformative interventions, Semangat Dunia Remaja or Teen Aspirations (SETARA) and Growing Up Great! (GUG!), on gender norms perceptions and attitudes among very young adolescents in poor urban settings in Bandar Lampung, Semarang, Denpasar (Indonesia), and Kinshasa (Democratic Republic of the Congo). MethodsThe study draws from the longitudinal Global Early Adolescent Study, using a quasi-experimental design to evaluate the interventions. Data collection took place between 2017 and 2020. Our analytical samples included 2,159 adolescents in Kinshasa and 3,335 in Indonesia. We conducted a difference-in-difference analysis using generalized estimation equations and generalized linear models, after stratification by site and sex. ResultsThe interventions shifted a range of gender perceptions, although effects varied by program, city, and sex. SETARA shifted gender-normative perceptions related to traits, roles, and relations, while GUG! effects were more concentrated on attitudes toward chore sharing. SETARA was most effective in Semarang and Denpasar, but not in Bandar Lampung. In addition, both interventions were more consistently effective for girls than boys. DiscussionGender-transformative interventions can effectively promote gender equality in early adolescence, but effects are program-specific and context-specific. Our findings emphasize the importance of defined theories of change and consistent implementation in gender-transformative intervention.

Examining early learners' perceptions of inclusion: adaptation of the student version of the perceptions of inclusion questionnaire for first- and second-grade students (PIQ-EARLY).

Promoting the emotional and social development of students with and without special needs is a central goal of implementing inclusive education in the school system. The entry into school, and thus into the formal education system, is accompanied by emotions and changes in self-image and social relationships. For assessing emotional inclusion, social inclusion, and academic self-concept, the Perceptions of Inclusion Questionnaire (PIQ) is a widely used instrument. To date, the paper-pencil questionnaire has been used from third through ninth grades but has not yet been used with younger ages. This paper presents an adapted version of the PIQ for first- and second-grade students, which was used on two measurement time occasions (T1, N = 407, MAge = 7.2; T2, N = 613, MAge = 7.6). Information on students' reading and listening comprehension was collected from the class teachers to verify whether the adapted questionnaire can be used for all students with different levels of language competencies. Measurement invariance was demonstrated to be at least scalar for all groups considered in the analyses. Students with higher rankings of reading and listening comprehension skills reported significant higher levels of emotional inclusion and academic self-concept while there were no significant differences in social inclusion. The findings suggest that the PIQ-EARLY is a suitable instrument for assessing self-perceived inclusion in first- and second-grade students. The results also highlight the importance of students' language competencies for adjustment to school in early school years.

Impact of Education and Its Importance on e-Commerce Platforms Influencing College Students' Abilities and Performance-based Results

A successful educational environment depends on excellent instruction. The learning of students and, thus, their performance, can be significantly improved by skilled and knowledgeable teachers who use engaging instructional tactics, offer clear explanations, provide constructive criticism, and foster a happy classroom environment. The study aims to comprehend how education and its value for e-commerce are affected by students' attitudes and performance, while also acknowledging the expanding significance of e-commerce platforms in today's digital economy. The study looks at performance, early perceptions of online learning, and attitudes to examine the relationship between intended behaviour, academic success, and the mediating effect of e-commerce adoption. SmartPLS is a useful tool for data analysis, but alternative statistical methods or supplementary analyses might be taken into consideration for future investigation. By utilizing longitudinal methods, expanding the sample size and diversity, and confirming the results across other cultural contexts, future research may be able to overcome these constraints. A multidimensional approach to the educational environment, the use of qualitative research methods, and the exploration of additional potential mediating and moderating variables would also help to advance our understanding of the complex relationship between education, e-commerce adoption, students attitudes, and the academic success of students. The study also investigates the educational environment's moderating impact on this relationship. The study's conclusions have applications for educational institutions, highlighting the necessity of enhancing the learning environment, encouraging e-commerce usage, and addressing misconceptions about online learning.

Early pheromone perception remodels neurodevelopment and accelerates neurodegeneration in adult C. elegans

Age-associated neurodegenerative disorders such as Parkinson's and Alzheimer's diseases are mainly caused by protein aggregation. The etiologies of these neurodegenerative diseases share a chemical environment. However, how chemical cues modulate neurodegeneration remains unclear. Here, we found that in Caenorhabditis elegans, exposure to pheromones in the L1 stage accelerates neurodegeneration in adults. Perception of pheromones ascr#3 and ascr#10 is mediated by chemosensory neurons ASK and ASI. ascr#3 perceived by G protein-coupled receptor (GPCR) DAF-38 in ASK activates glutamatergic transmission into AIA interneurons. ascr#10 perceived by GPCR STR-2 in ASI activates the secretion of neuropeptide NLP-1, which binds to the NPR-11 receptor in AIA. Activation of both ASI and ASK is required and sufficient to remodel neurodevelopment via AIA, which triggers insulin-like signaling and inhibits autophagy in adult neurons non-cell-autonomously. Our work reveals how pheromone perception at the early developmental stage modulates neurodegeneration in adults and provides insights into how the external environment impacts neurodegenerative diseases.

Transcranial Random Noise Stimulation Boosts Early Motion Perception Learning Rather than the Later Performance Plateau.

The effect of transcranial random noise stimulation (tRNS) on visual perceptual learning has only been investigated during early training sessions, and the influence of tRNS on later performance is unclear. We engaged participants first in 8 days of training to reach a plateau (Stage 1) and then in continued training for 3 days (Stage 2). In the first group, tRNS was applied to visual areas of the brain while participants were trained on a coherent motion direction identification task over a period of 11 days (Stage 1 + Stage 2). In the second group, participants completed an 8-day training period without any stimulation to reach a plateau (Stage 1); after that, they continued training for 3 days, during which tRNS was administered (Stage 2). In the third group, participants completed the same training as the second group, but during Stage 2, tRNS was replaced by sham stimulation. Coherence thresholds were measured three times: before training, after Stage 1, and after Stage 2. Compared with sham simulation, tRNS did not improve coherence thresholds during the plateau period. The comparison of learning curves between the first and third groups showed that tRNS decreased thresholds in the early training stage, but it failed to improve plateau thresholds. For the second and third groups, tRNS did not further enhance plateau thresholds after the continued 3-day training period. In conclusion, tRNS facilitated visual perceptual learning in the early stage, but its effect disappeared as the training continued.

Understanding the neural mechanisms for infants' perception of native and non-native speech

Though perceptual narrowing has been widely recognized as a process guiding cognitive development and category learning in infancy and early childhood, its neural mechanisms and traits at a cortical level remain unclear. Using an electroencephalography (EEG) abstract mismatch negativity (MMN) paradigm, Australian infants’ neural sensitivity to (native) English and (non-native) Nuu-Chah-Nulth speech contrasts was examined in a cross-sectional design at the onset (5–6 months) and offset (11–12 months) of perceptual narrowing. Immature mismatch responses (MMR) were observed among younger infants for both contrasts, while older infants showed MMR response to the non-native contrast, and both MMR and MMN to the native contrast. Sensitivity to the Nuu-Chah-Nulth contrast at perceptual narrowing offset was retained yet stayed immature. Findings conform to perceptual assimilation theories, reflecting plasticity in early speech perception and development. Compared to behavioural paradigms, neural examination effectively reveals experience-induced processing differences to subtle contrasts at the offset of perceptual narrowing.

Early threat perception is independent of later cognitive and behavioral control. A virtual reality-EEG-ECG study.

Research on social threat has shown influences of various factors, such as agent characteristics, proximity, and social interaction on social threat perception. An important, yet understudied aspect of threat exposure concerns the ability to exert control over the threat and its implications for threat perception. In this study, we used a virtual reality (VR) environment showing an approaching avatar that was either angry (threatening body expression) or neutral (neutral body expression) and informed participants to stop avatars from coming closer under five levels of control success (0, 25, 50, 75, or 100%) when they felt uncomfortable. Behavioral results revealed that social threat triggered faster reactions at a greater virtual distance from the participant than the neutral avatar. Event-related potentials (ERPs) revealed that the angry avatar elicited a larger N170/vertex positive potential (VPP) and a smaller N3 than the neutral avatar. The 100% control condition elicited a larger late positive potential (LPP) than the 75% control condition. In addition, we observed enhanced theta power and accelerated heart rate for the angry avatar vs. neutral avatar, suggesting that these measures index threat perception. Our results indicate that perception of social threat takes place in early to middle cortical processing stages, and control ability is associated with cognitive evaluation in middle to late stages.

The lived experience of prostate cancer: 10-year survivor perspectives following contemporary treatment of localized prostate cancer.

Studies relying on standardized instruments to measure patient-centered harms and benefits of cancer treatment may fail to capture important elements of the lived experience of cancer patients. Further, qualitative studies on the survivorship experience of men with localized prostate cancer (PCa) are limited. We sought to explore the early experience, long-term experience, and advice provided for others among long-term survivors of localized PCa. Semi-structured qualitative interviews with a subset (n = 66) of respondents to a survey of 10-year PCa survivors who underwent active surveillance, radical prostatectomy, or radiotherapy. Topics included early and long-term experiences and advice to other men and physicians. Immediately after treatment, men were mostly satisfied with radiation and active surveillance due to remaining whole and avoiding surgical removal of the prostate. Meanwhile, men treated with surgery felt relieved by the removal of cancer. Some early negative perception was related to short-term anxiety, particularly among men who underwent active surveillance. Long-term experiences included accepting the trade-offs of urinary and sexual side effects with survival. Most men fared well financially, some had strengthened relationships, and many reported greater appreciation and compassion. Men provided essential advice to other men and physicians on the importance of gathering detailed information on treatments and establishing a strong relationship with physicians. Long-term survivors of localized PCa generally do well by accepting the long-term effects of contemporary treatments, experiencing strengthened relationships, and developing a better overall life approach. We provide useful perspectives and insights for men opting to use current-day treatments for localized PCa.

한국어 학습서에 나타난 초기 개신교 선교사들의 인식 연구

This study aims to examine the early Protestant missionaries' perception of the Korean language and Koreans' thoughts in the late 19th century. To this end, I analyzed the contents and language data of Korean study books published in the 1890s by early Protestant missionaries. And I tried to find out what they thought about the linguistic characteristics of the Korean language, the connection between the Korean language and Koreans' thoughts, and the way of living of Korean people. Through the research, I found the following. Firstly, they focused on practical linguistic knowledge such as pronunciation, phonology, and grammatical use for communication with native Korean speakers. Secondly, they acknowledged the correlation between the Korean language and Koreans' thoughts and presented various examples to prove this. Thirdly, they looked critically at the way of living of Korean people from a Western-centered point of view.

Contrasting Accounts of Early Speech Perception and Production.

Language researchers have historically either dismissed or ignored completely behavioral accounts of language acquisition while at the same time acknowledging the important role of experience in language learning. Many language researchers have also moved away from theories based on an innate generative universal grammar and promoted experience-dependent and usage-based theories of language. These theories suggest that hearing and using language in its context is critical for learning language. However, rather than appealing to empirically derived principles to explain the learning, these theories appeal to inferred cognitive mechanisms. In this article, I describe a usage-based theory of language acquisition as a recent example of a more general cognitive linguistic theory and note both logical and methodological problems. I then present a behavior-analytic theory of speech perception and production and contrast it with cognitive theories. Even though some researchers acknowledge the role of social feedback (they rarely call it reinforcement) in vocal learning, they omit the important role played by automatic reinforcement. I conclude by describing automatic reinforcement as the missing link in a parsimonious account of vocal development in human infants and making comparisons to vocal development in songbirds.

Early COVID-19 Attitudes and Behaviors and Their Associations With Later Infection: A Local Perspective From One U.S. City.

At the onset of the pandemic, there was poor public awareness and inaction in response to COVID-19; it is less known whether this translated to subsequent infections. To explore whether adults who perceived COVID-19 as less of a threat and who were not taking early actions were more likely to become infected over the following year. Survey data from the ongoing (COVID-19 & Chronic Conditions (C3) anonymized for review) cohort study. Six hundred forty-two adults with a mean age of 63 and ≥1 chronic condition. Self-reported attitudes and behaviors regarding COVID-19 were assessed from March 13 to April 3, 2020, and COVID-19 infection status was captured between May 2020 and January 2021. Bivariate and multivariable analyses examined associations between early perceptions and behaviors with later infection. Approximately 7% reported infection with COVID-19 (N = 46). Adults who perceived the threat of COVID-19 less seriously at the initial outbreak were more likely to test positive over the following year [odds ratio (OR): 0.81, CI: 0.70-0.94; P = 0.006]. Those who were less likely to believe their actions would affect whether they would become infected were more likely to test positive (OR: 0.87, CI: 0.77-0.99; P = 0.03), as were adults who reported not changing their routines (OR: 0.45; CI: 0.24-0.85; P = 0.01). Adults with delayed responses in acknowledging the threat of COVID-19 and in changing behaviors were more likely to contract the virus. This investigation provides insight into the consequences of inadequate public understanding and response to COVID-19, and it highlights the importance of promoting early awareness among high-risk groups during public health crises.

Saliency affects attentional capture and suppression of abrupt-onset and color singleton distractors: Evidence from event-related potential studies.

Attention is the process of selecting relevant information and suppressing irrelevant information. However, it is still controversial whether attentional capture by salient but task-irrelevant stimuli operates in a bottom-up fashion (stimulus-driven theory) or a top-down fashion (goal-driven theory) or if even salient distractors can be suppressed before capturing attention (signal suppression theory). In the present study, we investigated how saliency affects attentional capture (indexed by N2-posterior-contralateral [N2pc]) and suppression (indexed by distractor positivity [PD ]) of abrupt-onset and color singleton distractors in a visual search task. Experiment 1 showed that an abrupt-onset distractor elicited both N2pc and PD , while a color singleton distractor elicited only PD . Moreover, the abrupt-onset distractor elicited a larger N2pc and a larger PD relative to the color singleton distractor. In addition, both distractors elicited an early positive component, the positivity posterior contralateral (Ppc), which was also larger for abrupt onsets than for color singletons. Experiment 2 further demonstrated that when both the abrupt onset and color singleton were designed as targets, and thus required no attentional suppression, Ppc was elicited, but PD was not. This corroborated the finding in Experiment 1 that the later PD , not the early Ppc, reflected attentional suppression. Therefore, a more salient distractor demonstrates stronger early perceptual processing, can capture attention better and needs more attentional resources to be suppressed later. Based on these results, a three-stage hypothesis is proposed, in which the saliency of a distractor modulates processing at early perception, attentional capture, and suppression stages.