scholarly journals Involuntary Attentional Capture is Determined by Task Set: Evidence from Event-related Brain Potentials

2008 ◽  
Vol 20 (8) ◽  
pp. 1423-1433 ◽  
Author(s):  
Martin Eimer ◽  
Monika Kiss
Keyword(s):  
Attentional Capture ◽  
Alternative Interpretation ◽  
Color Singleton ◽  
Attentional Orienting ◽  
Brain Potentials ◽  
Task Set ◽  
Visual Objects ◽  
Current Task ◽  
Physically Identical

To find out whether attentional capture by irrelevant but salient visual objects is an exogenous bottom–up phenomenon, or can be modulated by current task set, two experiments were conducted where the N2pc component was measured as an electrophysiological marker of attentional selection in response to spatially uninformative color singleton cues that preceded target arrays. When observers had to report the orientation of a uniquely colored target bar among distractor bars (color task), behavioral spatial cueing effects were accompanied by an early cue-induced N2pc, indicative of rapid attentional capture by color singleton cues. In contrast, when they reported the orientation of target bars presented without distractors (onset task), no behavioral cueing effects were found and no early N2pc was triggered to physically identical cue arrays. Experiment 2 ruled out an alternative interpretation of these N2pc differences in terms of distractor inhibition. These results do not support previous claims that attentional capture is initially unaffected by top–down intention, and demonstrate the central role of task set in involuntary attentional orienting.

A Review of the Role of Cue Processing in Task Switching

2013 ◽  
Vol 221 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Kerstin Jost ◽  
Wouter De Baene ◽  
Iring Koch ◽  
Marcel Brass
Keyword(s):  
Cognitive Control ◽  
Task Switching ◽  
Task Switch ◽  
Task Set ◽  
Switch Costs ◽  
Set Switching ◽  
Controversial Topic ◽  
Cue Encoding ◽  
Cue Processing

The role of cue processing has become a controversial topic in research on cognitive control using task-switching procedures. Some authors suggested a priming account to explain switch costs as a form of encoding benefit when the cue from the previous trial is repeated and hence challenged theories that attribute task-switch costs to task-set (re)configuration. A rich body of empirical evidence has evolved that indeed shows that cue-encoding repetition priming is an important component in task switching. However, these studies also demonstrate that there are usually substantial “true” task-switch costs. Here, we review this behavioral, electrophysiological, and brain imaging evidence. Moreover, we describe alternative approaches to the explicit task-cuing procedure, such as the usage of transition cues or the task-span procedure. In addition, we address issues related to the type of cue, such as cue transparency. We also discuss methodological and theoretical implications and argue that the explicit task-cuing procedure is suitable to address issues of cognitive control and task-set switching.

TESTING GOAL-DRIVEN CAPTURE BY THREAT

2019 ◽  
Author(s):  
Chris Robert Harrison Brown
Keyword(s):  
Experimental Evidence ◽  
Attentional Capture ◽  
Critical Role ◽  
Experimental Manipulation ◽  
Contingent Capture ◽  
Top Down ◽  
Affective Stimuli ◽  
Clinical Disorders ◽  
Positive Stimuli

Attention has long been characterised within prominent models as reflecting a competition between goal-driven and stimulus-driven processes. It remains unclear, however, how involuntary attentional capture by affective stimuli, such as threat-laden content, fits into such models. While such effects were traditionally held to reflect stimulus-driven processes, recent research has increasingly implicated a critical role of goal-driven processes. Here we test an alternative goal-driven account of involuntary attentional capture by threat, using an experimental manipulation of goal-driven attention. To this end we combined the classic ‘contingent capture’ and ‘emotion-induced blink’ (EIB) paradigms in an RSVP task with both positive or threatening target search goals. Across six experiments, positive and threat distractors were presented in peripheral, parafoveal, and central locations. Across all distractor locations, we found that involuntary attentional capture by irrelevant threatening distractors could be induced via the adoption of a search goal for a threatening category; adopting a goal for a positive category conversely led to capture only by positive stimuli. Our findings provide direct experimental evidence for a causal role of voluntary goals in involuntary capture by irrelevant threat stimuli, and hence demonstrate the plausibility of a top-down account of this phenomenon. We discuss the implications of these findings in relation to current cognitive models of attention and clinical disorders.

scholarly journals Optimistic amnesia: how online and offline processing shape belief updating and memory biases in immediate and long-term optimism biases

2021 ◽  
Author(s):  
Ziqing Yao ◽  
Xuanyi Lin ◽  
Xiaoqing Hu
Keyword(s):  
Active Role ◽  
Prior Beliefs ◽  
Belief Updating ◽  
Estimation Task ◽  
Memory Biases ◽  
Brain Potentials ◽  
Adverse Life Event ◽  
Offline Processing

Abstract When people are confronted with feedback that counters their prior beliefs, they preferentially rely on desirable rather than undesirable feedback in belief updating, i.e. an optimism bias. In two pre-registered EEG studies employing an adverse life event probability estimation task, we investigated the neurocognitive processes that support the formation and the change of optimism biases in immediate and 24 h delayed tests. We found that optimistic belief updating biases not only emerged immediately but also became significantly larger after 24 h, suggesting an active role of valence-dependent offline consolidation processes in the change of optimism biases. Participants also showed optimistic memory biases: they were less accurate in remembering undesirable than desirable feedback probabilities, with inferior memories of undesirable feedback associated with lower belief updating in the delayed test. Examining event-related brain potentials (ERPs) revealed that desirability of feedback biased initial encoding: desirable feedback elicited larger P300s than undesirable feedback, with larger P300 amplitudes predicting both higher belief updating and memory accuracies. These results suggest that desirability of feedback could bias both online and offline memory-related processes such as encoding and consolidation, with both processes contributing to the formation and change of optimism biases.

scholarly journals Neural Dynamics of Cognitive Control over Working Memory Capture of Attention

2019 ◽  
Vol 31 (7) ◽  
pp. 1079-1090 ◽  
Author(s):  
Peter S. Whitehead ◽  
Mathilde M. Ooi ◽  
Tobias Egner ◽  
Marty G. Woldorff
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Cognitive Control ◽  
Attentional Capture ◽  
Search Display ◽  
Neural Mechanisms ◽  
High Temporal Resolution ◽  
Control Mechanisms ◽  
Attentional Orienting ◽  
Behavioral Studies

The contents of working memory (WM) guide visual attention toward matching features, with visual search being faster when the target and a feature of an item held in WM spatially overlap (validly cued) than when they occur at different locations (invalidly cued). Recent behavioral studies have indicated that attentional capture by WM content can be modulated by cognitive control: When WM cues are reliably helpful to visual search (predictably valid), capture is enhanced, but when reliably detrimental (predictably invalid), capture is attenuated. The neural mechanisms underlying this effect are not well understood, however. Here, we leveraged the high temporal resolution of ERPs time-locked to the onset of the search display to determine how and at what processing stage cognitive control modulates the search process. We manipulated predictability by grouping trials into unpredictable (50% valid/invalid) and predictable (100% valid, 100% invalid) blocks. Behavioral results confirmed that predictability modulated WM-related capture. Comparison of ERPs to the search arrays showed that the N2pc, a posteriorly distributed signature of initial attentional orienting toward a lateralized target, was not impacted by target validity predictability. However, a longer latency, more anterior, lateralized effect—here, termed the “contralateral attention-related negativity”—was reduced under predictable conditions. This reduction interacted with validity, with substantially greater reduction for invalid than valid trials. These data suggest cognitive control over attentional capture by WM content does not affect the initial attentional-orienting process but can reduce the need to marshal later control mechanisms for processing relevant items in the visual world.

De publieke-omroepopdracht in de ogen van het publiek: survey-onderzoek naar de toekomstige taak van de Vlaamse publieke omroep

2012 ◽  
Vol 40 (2) ◽  
Author(s):  
Alexander Dhoest ◽  
Hilde Van den Bulck ◽  
Heidi Vandebosch ◽  
Myrte Dierckx
Keyword(s):  
Survey Research ◽  
Public Service ◽  
Public Broadcasting ◽  
Future Role ◽  
The Public ◽  
Public Service Broadcasting ◽  
Highly Educated ◽  
The Future ◽  
Current Task

The public broadcasting remit in the eyes of the audience: survey research into the future role of Flemish public service broadcasting The public broadcasting remit in the eyes of the audience: survey research into the future role of Flemish public service broadcasting In view of the discussion about the future position of public service broadcasting, this research investigates the expectations of Flemings regarding their public service broadcasting institution VRT. Based on the current task description of the VRT, a survey was effectuated among a representative sample of Flemings (N=1565). Questions were asked about the content (broad or complementary to commercial broadcasting), audience (broad or niche) and distinctive nature of public service broadcasting. The analysis shows that, overall, Flemings are in favour of a broad public service broadcasting institution with a strong focus on entertainment (besides information), oriented towards a broad audience. At the same time, they believe the institution should distinguish itself from its competitors, through quality, social responsibility, cultural identity and (particularly creative) innovation, among other things. Cluster analysis shows that the call to prioritize culture and education over entertainment, which dominates public debate, is representative of only a minority (20%) of highly educated Flemings.

scholarly journals A bridge to progress further afield: The promise of a common framework on attentional capture

2021 ◽  
Author(s):  
Steven Most ◽  
Kim Curby
Keyword(s):  
Attentional Capture ◽  
Attentional Biases ◽  
Perceptual Expertise ◽  
Physical Factors ◽  
Attentional Allocation ◽  
Clinical Disorders ◽  
Common Framework ◽  
Emotional Resonance ◽  
Advance Theory

Although physical salience looms large in the attentional capture literature, stimuli can also capture attention via salience deriving from non-physical factors. Such psychological salience can stem, for example, from the emotional resonance of stimuli or their relevance to a person’s expertise. We consider how insights from a recently proposed framework for attentional capture can be used to advance theory and drive research on the role of emotion-driven attentional biases in clinical disorders and on how attentional allocation changes with the development of perceptual expertise. In return, we wonder how their common framework can be enriched through considerations of psychological salience.

scholarly journals Transcranial Ultrasound Stimulation in Anterior Cingulate Cortex Impairs Information Sampling and Learning in Loss Contexts

2021 ◽  
Author(s):  
Kianoush Banaie Boroujeni ◽  
Michelle K Sigona ◽  
Robert Louie Treuting ◽  
Manuel J Thomas ◽  
Charles F Caskey ◽  
...  
Keyword(s):  
Anterior Cingulate Cortex ◽  
Behavioral Flexibility ◽  
Cingulate Cortex ◽  
Anterior Cingulate ◽  
Transcranial Ultrasound ◽  
Neural Signals ◽  
Visual Objects ◽  
Ultrasound Stimulation ◽  
Information Sampling

Neural activity in anterior cingulate cortex and the anterior striatum predicts which visual objects are sampled and how likely objects are paired with positive or aversive outcomes. We causally tested whether these neural signals contribute to behavioral flexibility. Disrupting with transcranial ultrasound the ACC, but not striatum, prolonged information sampling when attentional demands were high, impaired flexible learning, and reduced the ability to avoid losses. These results support a role of the ACC in guiding attention and information sampling to overcome motivational conflict during adaptive behaviors.

scholarly journals Contextual Adaptation of Cognitive Flexibility is driven by Task- and Item-Level Learning

2019 ◽  
Author(s):  
Audrey Siqi-Liu ◽  
Tobias Egner
Keyword(s):  
Cognitive Flexibility ◽  
Stimulus Item ◽  
Transfer Task ◽  
Learning Mechanisms ◽  
Behavioral Experiments ◽  
Task Set ◽  
Switch Costs ◽  
Cognitive Stability ◽  
Current Task ◽  
Task Sets

Adaptive behavior requires finding, and adjusting, an optimal tradeoff between focusing on a current task-set (cognitive stability) and updating that task-set when the environment changes (cognitive flexibility). Such dynamic adjustments of cognitive flexibility are observed in cued task-switching paradigms, where switch costs tend to decrease as the proportion of switch trials over blocks increases. However, the learning mechanisms underlying this phenomenon, here referred to as the list-wide proportion switch effect (LWPSE), are currently unknown.We addressed this question across four behavioral experiments. Experiment 1 replicated the basic LWPSE reported in previous studies. Having participants switch between three instead of two tasks, Experiment 2 demonstrated that the LWPSE is preserved even when the specific alternate task to switch to cannot be anticipated. Experiments 3a and 3b tested for the generalization of list-wide switch-readiness to an unbiased “transfer task,” presented equally often as switch and repeat trials, by intermixing the transfertask with biased tasks. Despite the list-wide bias, the LWPSE was only found for biased tasks, suggesting that the modulations of switch costs are task set and/or task stimulus (item)-specific. To evaluate these two possibilities, Experiment 4 employed biased versus unbiased stimuli within biased task sets and found switch-cost modulations for both stimuli sets. These results establish how people adapt their stability-flexibility tradeoff to different contexts. Specifically, our findings show that people learn to associate context appropriate levels of switch readiness with switch-predictive cues, provided by task sets as well as specific task stimuli.

The Role of the Institutional Environment in Marketing Channels

2002 ◽  
Vol 66 (3) ◽  
pp. 82-97 ◽  
Author(s):  
Rajdeep Grewal ◽  
Ravi Dharwadkar
Keyword(s):  
Institutional Environment ◽  
Marketing Channels ◽  
Task Environment ◽  
The Political ◽  
Institutional Processes ◽  
Channel Relationships ◽  
Current Task ◽  
Managerial Implications ◽  
Underlying Mechanisms

Set within the political economy framework, marketing channels literature predominantly has used an efficiency-based task environment perspective and largely overlooked a legitimacy-based institutional environment approach in studying channel attitudes, behaviors, processes, and structures. The purpose of this article is to highlight the importance of the institutional environment and develop a comprehensive conceptual framework that incorporates the institutional environment into current marketing channels research. The institutional environment perspective relies on the primacy of (1) regulatory institutions (e.g., laws), (2) normative institutions (e.g., professions), and (3) cognitive institutions (e.g., habitual actions) in influencing the legitimacy of channel members. Using institutional theory, the authors augment the current task environment approach by developing three institutional processes and their underlying mechanisms and elaborating on how these institutions might influence channel relationships. The article ends by laying out a research agenda and highlighting managerial implications.

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