We used computer simulations to evaluate different procedures for measuring changes in the onset latency of a representative range event-related components (the auditory and visual N1, P3, N2pc, frequency-related P3 difference wave). These included several techniques determine latencies combined with approaches using both single-participant average waveforms jackknife-subsample waveforms. In general, jackknife-based approach relative criterion technique or fractional area (J.C. Hansen & S.A....

This event-related potentials study investigated the long-term effects associated with a history of one or multiple concussions on N2pc and P3 components using visual search oddball paradigm.A total 47 university football players were assigned to three experimental groups based prior concussion history: Athletes (single-concussion group); two more (multi-concussion non-concussed athletic controls. The average post-concussion period was 31 months for athletes in multi-concussion group 59...

Abstract In this psychological refractory period (PRP) experiment, a tone (T 1 ) was presented, followed by visual target 2 embedded in bilateral display, and speeded response required for each target. The T –T stimulus onset asynchrony (SOA) 300, 650, or 1000 ms. Mean time to increased as SOA reduced, replicating the well‐known PRP effect. Importantly, N2pc component of event‐related potential progressively attenuated latency sustained posterior contralateral negativity (SPCN) that follows...

The N2pc component of the event-related potential (ERP) is an index visual–spatial attention. It not clear whether reflects pure top-down attentional activity or interaction with bottom-up sensory activity. Here, we manipulated stimulus intensity items composing target display. Although amplitude P1 increased monotonically increasing intensity, did vary intensity. Instead, onset latency was delayed for weaker stimuli, suggesting that strength selection cue (target color) influenced moment at...

Apparent race of a face impacts processing efficiency, typically leading to an own-race advantage. For instance, facial expressions are more accurately recognized, and their intensity better appraised, compared other-race faces. Furthermore, these effects appear susceptible implicit bias. Here, we aimed understand racial bias on expression by looking at automatic nonautomatic stages. To this end, scalp electroencephalography was recorded off group White participants while they completed...

The N2pc component of the event-related potential is a moment-by-moment index deployment visual-spatial attention. It not clear whether reflects pure top-down attentional activity or positive interaction with bottom-up sensory activity. Here, we presented bilateral visual display containing target and distractor for duration 50, 200, 350 ms. was smaller ms than two shorter durations. These results go against hypothesis that long-lasting activity, which would have predicted larger as stimulus...

The Error-related negativity (ERN) is a component of the event-related brain potentials elicited by error commission. ERN thought to reflect cognitive control processes aiming improve performance. As previous studies showed modulation amplitude throughout execution learning task, this study aims follow changes from early late blocks in relation with concomitant motor sequence using serial reaction time (SRT) task. Twenty-two healthy participants completed SRT task during which continuous EEG...

In predictive spatial cueing studies, reaction times (RT) are shorter for targets appearing at cued locations (valid trials) than other (invalid trials). An increase in the amplitude of early P1 and/or N1 event-related potential (ERP) components is also present items locations, reflecting attentional sensory gain control mechanisms. However, it still unknown which stage processing stream these effects translated into latency effects.Here, we measured two ERP components, N2pc and sustained...

Abstract The attentional blink (AB) refers to the impairment in accurate report of a second target (T2) when presented shortly after first (T1) rapid serial visual presentation distractors. goal present study was determine whether AB is caused by failure early selection processes, which leads and consolidation wrong item working memory, measuring frequency‐related P3 T2 + 1. During AB, an attenuation observed, as well increase amplitude Whereas observed only correctly reported, 1 trials...

Abstract The attentional blink ( AB ) refers to the decline in report accuracy of a second target T 2) when presented shortly after first 1) rapid serial visual presentation RSVP distractors. It is known that masking 1 increases magnitude , and single (equivalent stream attenuates P 3 correct trials. major purpose present study was clarify how these two effects may be integrated. An intervening distractor at lag 1+1), 2 1+2), or neither lags (no distractor). always 3, as last item stream....

Abstract The attentional blink (AB) refers to the difficulty in reporting a second target (T2) presented shortly after first (T1) stream of distractors. goal present study was investigate distractor‐based interference AB by recording P3 component event‐related potential both targets. An intertarget distractor at lag 1 (T1+1), 2 (T1+2), or neither these two lags (no distractor). T2 always 3, as last item stream. In experiments, from T1 attenuated T1+1 condition compared other conditions....

Abstract Objectives: Concussions affect the processing of emotional stimuli. This study aimed to investigate how sex interacts with concussion effects on early event-related brain potentials (ERP) measures (P1, N1) facial expressions (EFE) in asymptomatic, multi-concussion athletes during an EFE identification task. Methods: Forty control (20 females and 20 males) 43 multi-concussed (22 21 males), recruited more than 3 months after their last concussion, were tested. Participants completed...

Human behavior is framed by several social structures. In the present study, we focus on two of most important determinants structures: norms and political orientation. Social are implicit models shared expectations about how people should behave in different contexts. Although humans very sensitive to violations norms, there individual differences our sensitivity these violations. The second concept this study focuses orientation that define a continuum from left (liberal) right...

Masking of the first target in attentional blink (AB) paradigm increases magnitude AB relative to when is not masked. We examined underlying causes this effect an experiment which a single was presented rapid visual serial presentation stream. The P3 isolated by subtracting infrequent category trials from frequent trials. item immediately trailing (i.e., mask) present masked condition and replaced blank screen not-masked condition, reproducing conditions known modulate AB. significantly...

It is known that visual working memory capacity limited, but the nature of this limit remains a subject controversy. Increasingly, two factors are thought to memory: an object-based associated with so-called "slots" models, and information-based resource models. Recently, Barton, Ester, Awh (2009) introduced measure mnemonic resolution, which they dubbed c. We show here c critically flawed, cannot be interpreted as resolution. recommend strongly against its use interpretation, suggest...

This study aimed to compare the time course of emotional information processing between trauma-exposed and control participants, using electrophysiological measures. We conceived an Stroop task with two types words: trauma-related words neutral words. assessed evoked cerebral responses sexual abuse victims without post-traumatic stress disorder (PTSD) no participants. focused particularly on early wave (C1/P1), N2pc, P3b. Our main result indicated effect (55-165 ms) emotionality, which...