control of goal directed and stimulus driven attention in the brain pdf

Control of goal directed and stimulus driven attention in the brain pdf

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Effects of Stimulus-Driven and Goal-Directed Attention on Prepulse Inhibition of Brain Oscillations

Cognitive aspects of human motor activity: Contribution of right hemisphere and cerebellum

A central role for the lateral prefrontal cortex in goal-directed and stimulus-driven attention

Control of goal-directed and stimulus-driven attention in the brain

Concepts of movement and action are not completely synonymous, but what distinguishes one from the other? Movement may be defined as stimulus- driven motor acts, while action implies realization of a specific motor goal, essential for cognitively driven behavior.

Effects of Stimulus-Driven and Goal-Directed Attention on Prepulse Inhibition of Brain Oscillations

Stimulus-driven attention can improve working memory WM when drawn to behaviorally relevant information, but the neural mechanisms underlying this effect are unclear. The present study used functional magnetic resonance imaging fMRI to test competing hypotheses regarding the nature of the benefits of stimulus-driven attention to WM: that stimulus-driven attention benefits WM directly via salience detection, that stimulus-driven attention benefits WM incidentally via cognitive control mechanisms recruited to reduce interference from salient features, or that both mechanisms are co-involved in enhancing WM for salient information. To test these hypotheses, we observed activation in brain regions associated with cognitive control and salience detection. We found 2 cognitive control regions that were associated with enhanced memory for salient stimuli: a region in the right superior parietal lobule and a region in the right inferior frontal junction. No regions associated with salience detection were found to show this effect. These fMRI results support the hypothesis that benefits to WM from stimulus-driven attention occur primarily as a result of cognitive control and top-down factors rather than pure bottom-up aspects of stimulus-driven attention. Working memory WM temporarily maintains information in an activated state, where it can be accessed and manipulated to serve current task goals.

Cognitive aspects of human motor activity: Contribution of right hemisphere and cerebellum

Maurizio Corbetta , Gordon L. We review evidence for partially segregated networks of brain areas that carry out different attentional functions. One system, which includes parts of the intraparietal cortex and superior frontal cortex, is involved in preparing and applying goal-directed top-down selection for stimuli and responses. This system is also modulated by the detection of stimuli. The other system, which includes the temporoparietal cortex and inferior frontal cortex, and is largely lateralized to the right hemisphere, is not involved in top-down selection.

Either your web browser doesn't support Javascript or it is currently turned off. In the latter case, please turn on Javascript support in your web browser and reload this page. Attention selects which sensory information is preferentially processed and ultimately reaches our awareness. Attention, however, is not a unitary process: It can be captured by unexpected or salient events stimulus-driven or it can be deployed under voluntary control goal-directed , and these two forms of attention are implemented by largely distinct ventral and dorsal parieto-frontal networks. Yet, for coherent behavior and awareness to emerge, stimulus-driven and goal-directed behavior must ultimately interact. Here we show that the ventral, but not dorsal, network can account for stimulus-driven attentional limits to conscious perception, and that it is in the lateral prefrontal component of that network where stimulus-driven and goal-directed attention converge.

In order to behave adaptively, attention can be directed in space either voluntarily i. The emotional or motivational value of stimuli can also strongly influence attentional orienting. However, little is known about how reward-related effects compete or interact with endogenous and exogenous attention mechanisms, particularly outside of awareness. Here we developed a visual search paradigm to study subliminal value-based attentional orienting. We systematically manipulated goal-directed or stimulus-driven attentional orienting and examined whether an irrelevant, but previously rewarded stimulus could compete with both types of spatial attention during search.


PDF | We review evidence for partially segregated networks of brain areas that carry out different attentional functions. One system, which.


A central role for the lateral prefrontal cortex in goal-directed and stimulus-driven attention

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In sport psychology, the relationship between competitive anxiety and performance has been one of the most debated and researched topics of enquiry. The current chapter integrates research findings and models from the neuroscience, cognitive psychology, human movement science, and sport performance literature to offer a potential explanatory framework, especially with respect to self-paced, visually guided skills. The mediating role of visual attention is implicated, as it has been proposed to be central to both the top-down control of motor planning and the effects of anxiety on cognitive performance.

Control of goal-directed and stimulus-driven attention in the brain

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly.

Control of goal-directed and stimulus-driven attention in the brain

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. This review proposes that two networks of brain areas are involved in controlling attention. One network is primarily responsible for applying cognitive, top-down selection for stimuli and responses, whereas the other detects behaviourally relevant stimuli and might act as a 'circuit breaker' for the first system.

Citation: Mirela Dubravac, Beat Meier. Stimulating the parietal cortex by transcranial direct current stimulation tDCS : no effects on attention and memory[J]. AIMS Neuroscience, , 8 1 : Article views PDF downloads 39 Cited by 0. Mirela Dubravac, Beat Meier.

После этого он позвонил бы Стратмору, считал пароль с кольца на своем пальце и в последнюю минуту спас главный банк данных АНБ. Вдоволь посмеявшись, он исчез бы насовсем, превратившись в легенду Фонда электронных границ.

Effects of Stimulus-Driven and Goal-Directed Attention on Prepulse Inhibition of Brain Oscillations

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Но всякий раз, когда перед ним открывался очередной виток спирали, Беккер оставался вне поля зрения и создавалось впечатление, что тот постоянно находится впереди на сто восемьдесят градусов. Беккер держался центра башни, срезая углы и одним прыжком преодолевая сразу несколько ступенек, Халохот неуклонно двигался за. Еще несколько секунд - и все решит один-единственный выстрел. Даже если Беккер успеет спуститься вниз, ему все равно некуда бежать: Халохот выстрелит ему в спину, когда он будет пересекать Апельсиновый сад. Халохот переместился ближе к центру, чтобы двигаться быстрее, чувствуя, что уже настигает жертву: всякий раз, пробегая мимо очередного проема, он видел ее тень. Вниз.

Почти столько же поставил Нуматака. - Двадцать миллионов? - повторил он с притворным ужасом.  - Это уму непостижимо. - Я видел алгоритм. Уверяю вас, он стоит этих денег.

Беккер увидел ждущее такси. - Dejame entrar! - закричал Беккер, пробуя открыть запертую дверцу машины. Водитель отказался его впустить. Машина была оплачена человеком в очках в тонкой металлической оправе, и он должен был его дождаться. Беккер оглянулся и, увидев, как Халохот бежит по залу аэропорта с пистолетом в руке, бросил взгляд на свою стоящую на тротуаре веспу. Я погиб.

2 comments

  • Silke B. 05.06.2021 at 05:08

    Law and society lippman 2nd edition chapter 1 pdf google page essays in english on current topics in india pdf

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  • Liam S. 11.06.2021 at 17:29

    Objective : Prepulse inhibition PPI is an operational measure of sensory gating.

    Reply

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