Attentional Mechanisms
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. PERCEPTION, ATTENTION AND DEMONSTRATIVE THOUGHT: IN DEFENSE OF A HYBRID METASEMANTIC MECHANISM
Abstract Demonstrative thoughts are distinguished by the fact that their contents are determined relationally, via perception, rather than descriptively. Therefore, a fundamental task of a theory of demonstrative thought is to elucidate how facts about visual perception can explain how these thoughts come to have the contents that they do. The purpose of thi
Manuscrito. Publicado em: 2020-06
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2. Lesions of the orbitofrontal cortex do not affect the reinforcement omission effect in rats
The reinforcement omission effect (ROE), reflected by response rates that are higher after reinforcement omission than after reinforcement delivery, has been attributed to both motivational and attentional consequences of the surprising reinforcement omission. These processes depend on the operation of separate amygdala areas and their connections with other
Psychol. Neurosci.. Publicado em: 2013-12
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3. DISTRIBUIÇÃO DA INERVAÇÃO DA RELAXINA -3 NO TECTUM E TEGMENTUM NO RATO SUGERE ENVOLVIMENTO DO NUCLEO INCERTUS EM REDES DEFENSIVAS CENTRAIS. / DISTRIBUTION INNERVATION OF RELAXIN -3 NO TECTUM E TEGMENTUM SUGGESTS THE RAT NUCLEO INCERTUS INVOLVEMENT IN CENTRAL NETWORKS DEFENSIVE.
Nos mamíferos, as divisões tectal e tegmental do tronco cerebral estão envolvidas em mecanismos de atenção e de respostas a estímulos ameaçadores, como os predadores. Esses centros são regulados por conexões ascendentes, mas os detalhes anatômicos e neuroquímicos desta unidade não são totalmente conhecidos. O núcleo incertus (NI) no tegmento po
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2012
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4. Role of the amygdala in the reinforcement omission effect
The reinforcement omission effect (ROE) has been attributed to both motivational and attentional consequences of surprising reinforcement omission. Recent evidence suggests that the basolateral complex of the amygdala is involved in motivational components related to reinforcement value, whereas the central nucleus of the amygdala is involved in the processi
Psychol. Neurosci.. Publicado em: 2012-12
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5. Role of attention and translation in conflict resolution: implications for Stroop matching task interference
We studied the influence of attention on the timecourse of Stroop-like conflict. Thirty-two volunteers performed a Stroop matching task in which they had to compare either the color (n = 16) or meaning (n = 16) of two stimuli. The first stimulus was always a color-name printed in yellow, red, or blue (i.e., Stroop stimulus), and the second stimulus was eithe
Psychology & Neuroscience. Publicado em: 2010-12
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6. Avaliar as estratégias de ensino (atencionais) do professor de alunos com Transtorno Déficit de Atenção/Hiperatividade. / Evaluate the teaching strategies of teacher of pupils xith Attention-Deficit Hyperactivity Disorder.
This work intends to evaluate the pedagogica teachers of students with ADDH (Attention Deficit Disorder Hiperactivity): presence of attentional teaching strategies. It was also intended to investigate the concept of ADDH, verify the main difficulties related to apprenticeship and identify the attentional teaching strategies developed. This disorder is on of
Publicado em: 2006
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7. Priming effects of a peripheral visual stimulus in simple and go/no-go tasks
The early facilitatory effect of a peripheral spatially visual prime stimulus described in the literature for simple reaction time tasks has been usually smaller than that described for complex (go/no-go, choice) reaction time tasks. In the present study we investigated the reason for this difference. In a first and a second experiment we tested the particip
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02
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8. The attentional modulation of the flash-lag effect
If a dot is flashed in perfect alignment with a pair of dots rotating around the visual fixation point, most observers perceive the rotating dots as being ahead of the flashing dot (flash-lag effect). This perceptual effect has been interpreted to result from the perceptual extrapolation of the moving dots, the differential visual latencies between flashing
Braz J Med Biol Res. Publicado em: 2002-08
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9. Some experimental contributions to the study of the negative priming effect in selective attention tasks. / Algumas contribuições experimentais ao estudo do efeito de priming negativo em tarefas de atenção seletiva.
The development of sensitive and simple tests for the assessment of the negative priming effect has theoretical relevance to the elucidation of selective attention models, and also practical and potential clinical implications. The negative priming effect has been regarded as an index of inhibitory attentional processing and was proposed for the detection of
Publicado em: 2001
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10. On the role of selective attention in visual perception
What is the role of selective attention in visual perception? Before answering this question, it is necessary to differentiate between attentional mechanisms that influence the identification of a stimulus from those that operate after perception is complete. Cognitive neuroscience techniques are particularly well suited to making this distinction becau
The National Academy of Sciences.
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11. Attentional control of early perceptual learning.
The performance of adult humans in simple visual tasks improves dramatically with practice. This improvement is highly specific to basic attributes of the trained stimulus, suggesting that the underlying changes occur at low-level processing stages in the brain, where different orientations and spatial frequencies are handled by separate channels. We asked w
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12. Attentional mechanisms of borderline personality disorder
We consider whether disruption of a specific neural circuit related to self-regulation is an underlying biological deficit in borderline personality disorder (BPD). Because patients with BPD exhibit a poor ability to regulate negative affect, we hypothesized that brain mechanisms thought to be involved in such self-regulation would function abnormally even i
National Academy of Sciences.