Compatibility level repetition benefits in interference paradigms have been taken to reflect enhanced processing selectivity response cognitive conflict elicited by a task-irrelevant stimulus feature. The authors demonstrate such sequential effects the Simon task which (a) occur independent of previous behavioral and (b) cannot be accounted for enhancement. Furthermore, when presenting more than one type irrelevant features, compatibility occurred type-specific manner. results do not support...

Conflict monitoring theory holds that detection of conflicts in information processing by the anterior cingulate cortex (ACC) results adaptation minimizes subsequent conflict. Applying an Eriksen f lanker task with four stimuli mapped onto two responses, we investigated whether such modulation occurs only after response-related or also stimulus-related conflict, focusing on N2 component event-related potential. Contrasting previous findings, both stimulus- and conflict elicited enhancement...

We examined adaptation to frequent conflict in a flanker task using event-related potentials (ERPs). A prominent model of cognitive control suggests the fronto-central N2 as an indicator monitoring. Based on this we predicted (1) increased amplitude for incompatible compared compatible stimuli and (2) that difference would be less pronounced under conditions (high control). In model, is implemented modulation early visual processing. Traditionally, variations processing selectivity have been...

Performance in choice reaction time tasks deteriorates when an irrelevant stimulus feature is associated with incorrect response (conflict condition). Such interference effects are reduced under conditions of increased conflict-frequency. Although models cognitive control account for this modulation terms conflict-related attentional focusing on the target dimension, it possible that effect reflects practice specific ensembles or feature-response contingencies. Using Eriksen flanker task, we...

Current models of cognitive control assume gradual adjustment processing selectivity to the strength conflict evoked by distractor stimuli. Using a flanker task, we varied manipulating target and onset. Replicating previous findings, interference effects were larger on trials associated with advance presentation flankers compared simultaneous presentation. Controlling for stimulus response sequence excluding feature repetitions from administration (Experiment 1) or statistical analyses 2),...

Interference in the Eriksen flanker task has been shown to be reduced when (relative) frequency of conflicting stimuli is increased, a modulation thought reflect higher degree processing selectivity under conditions frequent conflict (Botvinick, Braver, Barch, Carter, & Cohen, 2001). Previous studies suggest that stimulus location acts as contextual cue, resulting location-specific adjustment different locations are associated with differential frequencies (Corballis Gratton, 2003; Wendt,...

In a variety of conflict paradigms, target and distractor stimuli are defined in terms perceptual features. Interference evoked by tends to be reduced when the ratio congruent incongruent trials is decreased, suggesting conflict-induced filtering (i.e., adjusting processing weights assigned associated with features). search evidence for such mechanism, we administered flanker task, which targets distractors were stimulus location (Experiment 1) or color 2). The efficiency features was...

Task switch protocols are frequently used in the assessment of cognitive control, both clinical and non-clinical populations. These confound task attentional set shift. The current study investigated ability adult ADHD patients to shift context switching tasks. We tested 38 adults with 39 control an extensive diagnostic battery a protocol without proactive interference. experiment combined orthogonally task-switch vs. repetition, no Each experimental stimulus had global local features...

In task switching, participants perform trials of repetitions (i.e., the same is executed in consecutive trials) and switches different tasks are longer reaction times switch comparison to these repetition referred as costs. These costs reduced by lengthening an interval following a cue that indicates upcoming task; this effect demonstrated effective preparation. To investigate role switching practice for preparation effects costs, we applied paradigm, involving two digit classification...

In choice reaction time (RT) tasks, performance is often influenced by the presence of nominally irrelevant stimuli, referred to as distractors. Recent research provided evidence that distractor processing can be adjusted utility distractors: Distractors predictive upcoming target/response were more attended and also elicited stronger motor responses. an event-related potential (ERP) study, we investigated whether not only extent (as suggested these previous results), but timing...

Abstract Response conflict evoked by a distractor stimulus object in interference tasks is associated with longer reaction times and pronounced ERP component referred to as the fronto‐central N2. Increasing proportion congruency (PC, i.e., of trials which target are same response) assumed enhance distractor‐evoked via defocusing attention. Findings concerning effect PC on N2 Eriksen flanker task experiments have been inconsistent, however, lending little support notion that reflects...

Frequent switching between two tasks afforded by the same stimuli is associated with between-task congruency effects, that is, relatively impaired performance when a stimulus affords different responses as compared to in both tasks. These effects indicate some form of application stimulus-response (S-R) rules currently irrelevant task. Between-task are usually enhanced on task switch trials repetition trials. Here we investigate whether this interaction reflects stronger proactive...