Search results for "Attention"

Distribution of Visuospatial Attention in "Open-Skill Sport" Athletes

2009

An attention-based weakly supervised framework for spitzoid melanocytic lesion diagnosis in whole slide images

2021

[EN] Melanoma is an aggressive neoplasm responsible for the majority of deaths from skin cancer. Specifically, spitzoid melanocytic tumors are one of the most challenging melanocytic lesions due to their ambiguous morphological features. The gold standard for its diagnosis and prognosis is the analysis of skin biopsies. In this process, dermatopathologists visualize skin histology slides under a microscope, in a highly time-consuming and subjective task. In the last years, computer-aided diagnosis (CAD) systems have emerged as a promising tool that could support pathologists in daily clinical practice. Nevertheless, no automatic CAD systems have yet been proposed for the analysis of spitzoi…

Anxiety and Covert Changes of Attention Control

1986

Publisher Summary This chapter presents a research paradigm, which allows the study of covert attentional processes in threatening situations and explores their relationship to the subjective experience of anxiety. These processes mediate changes of attention control beyond awareness by influencing the selective organization of behavior. The contingent negative variation (CNV) is a surface-negative slow potential that arises in the interstimulus interval of a forewarned reaction time task, where a warning signal (S1) precedes an imperative stimulus (S2), to which an overt motor response is required. If the interstimulus interval is shorter than approximately 3 seconds, CNV appears as a cont…

Unreliability of the dot probe task

2005

The dot probe task is a widely used measure of attention allocation to threatening stimuli. The present two studies examine the reliability of different versions of this task using words as well as pictures as stimulus material. Estimates of both internal consistency and retest reliability over one week lead to the conclusion that the dot probe task is a completely unreliable measure of attentional allocation in non‐clinical samples. This unreliability may explain the inconsistent findings for the dot probe task as reported in the literature. Copyright © 2005 John Wiley & Sons, Ltd.

Attention-based environment perception in autonomous robotics

2007

This paper describes a robotic architecture that uses visual attention mechanisms for autonomous navigation in unknown indoor environments. A foveation mechanism based on classical bottom-up gaze shifts allows the robot to autonomously select landmarks, defined as salient points in the camera images. Landmarks are memorized in a behavioral fashion, coupling sensing and acting to achieve a representation view and scale independent. Selected landmarks are stored in a topological map; during the navigation a top-down mechanism controls the attention system to achieve robot localization. Experiments and results show that our system is robust to noise and odometric errors, being at the same time…

Selective attention in the news feed: An eye-tracking study on the perception and selection of political news posts on Facebook

2018

Social networking sites such as Facebook are becoming increasingly important as a source for news. However, few studies have investigated what drives attention to content within the news feed and what influences the selection of news posts. We hypothesized that attitude consistency, the credibility of a source, and comments of other users raise interest in a news post in the news feed and influence the selection decision. A 2 × 2 × 2 laboratory experiment ( N = 103) using eye-tracking measurement showed that attitude consistency did not influence attention distribution in the news feed, but users preferred to select news posts with content reinforcing their attitudes. Participants spent mor…

Age differences in the irrelevant sound effect: A serial recognition paradigm

2015

In adults, the disrupting effect of irrelevant background sounds with distinct temporalspectral variations (changing-state sounds) on short-term memory performance was found to be robust. In the present study, a verbal serial recognition task was used to investigate this so-called Irrelevant Sound Effect (ISE) in adults and 8- to 10-year-old children. An essential part of the short-term memory impairment during changing-state speech is due to interference processes (changing-state effect) which can be differentiated from the deviation effect of auditory distraction. In line with recent findings (Hughes et al., 2013), our study demonstrates that the changing-state effect is not modulated by …

Author response: Individual differences in selective attention predict speech identification at a cocktail party

2016

Do distractors interfere with memory for study pairs in associative recognition?

2006

In an associative recognition task, distractors generally consist of a rearrangement of the items composing the study pairs. This makes it possible that processing the distractors generates retroactive interference on memory for the study pairs. In Experiment 1, we explored this possibility in a yes/no recognition test concerning previously learned arbitrary associations between visual symbols and auditory syllables. Rearranged pairs had a deleterious impact on the accuracy and the speed of responses to related correct pairs. This effect did not vary as a function of the number of training blocks, and furthermore, in Experiment 2, the same effect was observed for overlearned small multiplic…

Incidencia de la experiencia docente con el TDAH en los conocimientos, la autoeficacia y los niveles de estrés docente

2020

Los estudios que han comparado los conocimientos que tienen los profesores sin experiencia (PSE) y los profesores con experiencia profesional (PCE) sobre el Trastorno por Déficit de Atención e Hiperactividad (TDAH) han mostrado resultados contradictorios. Además, el papel que tiene la experiencia docente con niños con TDAH sobre los conocimientos, la autoeficacia y el estrés docente no ha sido abordado en los estudios previos. Por ello, el presente estudio pretende: a) comparar los conocimientos, las creencias erróneas y las lagunas de conocimiento de los PCE y PSE de España, acerca del TDAH; b) analizar la experiencia de los PCE con niños con TDAH y la relación con los conocimientos, la au…