scholarly journals Contribution of location uncertainty and feature similarity to illusory conjunction of basic visual features under limited attention

2010 ◽  
Vol 7 (9) ◽  
pp. 644-644
Author(s):  
L. Jingling ◽  
L. Zhaoping
Keyword(s):  
Visual Features ◽  
Limited Attention ◽  
Illusory Conjunction ◽  
Location Uncertainty ◽  
Feature Similarity

Selective Attention and Error Processing in an Illusory Conjunction Task

2005 ◽  
Vol 19 (3) ◽  
pp. 216-231 ◽  
Author(s):  
Albertus A. Wijers ◽  
Maarten A.S. Boksem
Keyword(s):  
Target Detection ◽  
Event Related Potentials ◽  
Illusory Conjunction ◽  
Conjunction Error ◽  
Error Related Negativity ◽  
Display Element ◽  
Related Potentials ◽  
Feature Error ◽  
High Level ◽  
Correct Target

Abstract. We recorded event-related potentials in an illusory conjunction task, in which subjects were cued on each trial to search for a particular colored letter in a subsequently presented test array, consisting of three different letters in three different colors. In a proportion of trials the target letter was present and in other trials none of the relevant features were present. In still other trials one of the features (color or letter identity) were present or both features were present but not combined in the same display element. When relevant features were present this resulted in an early posterior selection negativity (SN) and a frontal selection positivity (FSP). When a target was presented, this resulted in a FSP that was enhanced after 250 ms as compared to when both relevant features were present but not combined in the same display element. This suggests that this effect reflects an extra process of attending to both features bound to the same object. There were no differences between the ERPs in feature error and conjunction error trials, contrary to the idea that these two types of errors are due to different (perceptual and attentional) mechanisms. The P300 in conjunction error trials was much reduced relative to the P300 in correct target detection trials. A similar, error-related negativity-like component was visible in the response-locked averages in correct target detection trials, in feature error trials, and in conjunction error trials. Dipole modeling of this component resulted in a source in a deep medial-frontal location. These results suggested that this type of task induces a high level of response conflict, in which decision-related processes may play a major role.

Suicide-Bereaved Individuals’ Attitudes Toward Therapists

Crisis ◽  
2015 ◽  
Vol 36 (2) ◽  
pp. 135-141 ◽  
Author(s):  
Erin F. Ward-Ciesielski ◽  
Madeline D. Wielgus ◽  
Connor B. Jones
Keyword(s):  
Mental Health Treatment ◽  
Online Survey ◽  
The United States ◽  
Limited Attention ◽  
Time Of Death ◽  
Loved One ◽  
Important Group ◽  
Positive Attitudes ◽  
Suicide Bereaved ◽  
Research Domain

Background: Suicide-bereaved individuals represent an important group impacted by suicide. Understanding their experiences following the suicide of a loved one is an important research domain, despite receiving limited attention. Although suicide-bereaved individuals may benefit from mental health treatment, their attitudes toward therapy and therapists are poorly understood. Aims: The present study aimed to understand the extent to which bereaved individuals’ attitudes toward therapy and therapists are impacted by whether their loved one was in therapy at the time of death. Method: Suicide-bereaved individuals (N = 243) from the United States were recruited to complete an online survey about their experience with and attitudes toward therapy and therapists following the suicide of a loved one. Results: Bereaved individuals whose loved one was in therapy at the time of death (N = 48, 19.8%) reported more negative and less positive attitudes toward the treating therapist than those whose loved one was not in therapy at the time of death (N = 81, 33.3%) or whose loved one was never in therapy/the deceased’s therapy status was unknown (N = 114, 46.9%). Conclusion: The deceased’s involvement with a therapist appears to be an important factor impacting the experience of bereaved individuals and should be considered when attempting to engage these individuals in postvention.

Squandering Our Limited Attention: The Distraction and Persuasion Effects of Advertisements in Software Products

2002 ◽  
Author(s):  
Jeremy D. Heider ◽  
Brad J. Sagarin ◽  
M. Anne Britt ◽  
Sarah E. Wood ◽  
Joel E. Lynch
Keyword(s):  
Limited Attention ◽  
Software Products

Reduced change blindness for task-relevant visual features during a social interaction

2001 ◽  
Author(s):  
Donald A. Varakin ◽  
Sheena Rogers ◽  
Jeffrey T. Andre ◽  
Susan L. Davis
Keyword(s):  
Social Interaction ◽  
Change Blindness ◽  
Visual Features

Effects of Retinal Distance and Feature Similarity on Disparity Coding

1973 ◽  
Author(s):  
W. L. Gulick ◽  
W. M. Youngs ◽  
John P. Galla
Keyword(s):  
Feature Similarity

Attentional capture helps explain why moral and emotional content go viral

2019 ◽  
Author(s):  
William J. Brady ◽  
Ana P. Gantman ◽  
Jay Joseph Van Bavel
Keyword(s):  
Social Media ◽  
Attentional Capture ◽  
Emotional Content ◽  
Limited Attention ◽  
Psychological Process ◽  
Emotional Stimuli ◽  
Political Leaders ◽  
Lab Experiments ◽  
Perceptual Systems ◽  
Shed Light

Our social media newsfeeds are filled with a variety of content all battling for our limited attention. Across three studies, we investigated whether moral and emotional content captures our attention more than other content and if this may help explain why this content is more likely to go viral online. Using a combination of controlled lab experiments and nearly 50,000 political tweets, we found that moral and emotional content are prioritized in early visual attention more than neutral content, and that such attentional capture is associated with increased retweets during political conversations online. Furthermore, we found that the differences in attentional capture among moral and emotional stimuli could not be fully explained by differences in arousal. These studies suggest that attentional capture is one basic psychological process that helps explain the increased diffusion of moral and emotional content during political discourse on social media, and shed light on ways in which political leaders, disinformation profiteers, marketers, and activist organizations can spread moralized content by capitalizing on natural tendencies of our perceptual systems.

Using Convolutional Neural Networks to measure the contribution of visual features to the representation of object animacy in the brain

2019 ◽  
Author(s):  
Sushrut Thorat
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Temporal Cortex ◽  
Large Degree ◽  
Visual Features ◽  
Visual Feature ◽  
Visual Stream ◽  
Feature Information ◽  
Ventral Visual Stream ◽  
Animal Images

A mediolateral gradation in neural responses for images spanning animals to artificial objects is observed in the ventral temporal cortex (VTC). Which information streams drive this organisation is an ongoing debate. Recently, in Proklova et al. (2016), the visual shape and category (“animacy”) dimensions in a set of stimuli were dissociated using a behavioural measure of visual feature information. fMRI responses revealed a neural cluster (extra-visual animacy cluster - xVAC) which encoded category information unexplained by visual feature information, suggesting extra-visual contributions to the organisation in the ventral visual stream. We reassess these findings using Convolutional Neural Networks (CNNs) as models for the ventral visual stream. The visual features developed in the CNN layers can categorise the shape-matched stimuli from Proklova et al. (2016) in contrast to the behavioural measures used in the study. The category organisations in xVAC and VTC are explained to a large degree by the CNN visual feature differences, casting doubt over the suggestion that visual feature differences cannot account for the animacy organisation. To inform the debate further, we designed a set of stimuli with animal images to dissociate the animacy organisation driven by the CNN visual features from the degree of familiarity and agency (thoughtfulness and feelings). Preliminary results from a new fMRI experiment designed to understand the contribution of these non-visual features are presented.

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