scholarly journals The gradual emergence of spatially selective target processing in visual search: From feature-specific to object-based attentional control.

2014 ◽  
Vol 40 (5) ◽  
pp. 1819-1831 ◽  
Author(s):  
Martin Eimer ◽  
Anna Grubert
Keyword(s):  
Visual Search ◽  
Attentional Control ◽  
Object Based ◽  
Selective Target

scholarly journals Object-Based Attention is Impervious to Nearby Targets During Visual Search

2012 ◽  
Vol 12 (9) ◽  
pp. 1156-1156
Author(s):  
A. Greenberg ◽  
M. Rosen ◽  
K. Zamora ◽  
E. Cutrone ◽  
M. Behrmann
Keyword(s):  
Visual Search ◽  
Object Based

An EEG study of the combined effects of top-down and bottom-up attentional selection under varying task difficulty

2021 ◽  
Author(s):  
Einat Rashal ◽  
Mehdi Senoussi ◽  
Elisa Santandrea ◽  
Suliann Ben Hamed ◽  
Emiliano Macaluso ◽  
...  
Keyword(s):  
Visual Search ◽  
Attentional Control ◽  
Task Difficulty ◽  
Target Selection ◽  
Attentional Selection ◽  
Combined Effects ◽  
Top Down ◽  
Bottom Up ◽  
Search Tasks

This work reports an investigation of the effect of combined top-down and bottom-up attentional control sources, using known attention-related EEG components that are thought to reflect target selection (N2pc) and distractor suppression (PD), in easy and difficult visual search tasks.

Drawn to Distraction: Anxiety Impairs Neural Suppression of Known Distractor Features in Visual Search

2021 ◽  
pp. 1-13
Author(s):  
Christine Salahub ◽  
Stephen M. Emrich
Keyword(s):  
Visual Search ◽  
Attentional Control ◽  
Template Matching ◽  
Time Course ◽  
High Anxiety ◽  
Guided Search ◽  
Distractor Processing ◽  
Search And Destroy

Abstract When searching for a target, it is possible to suppress the features of a known distractor. This suppression may prevent distractor processing altogether or only after the distractor initially captures attention (i.e., search and destroy). However, suppression may be impaired in individuals with attentional control deficits, such as in high anxiety. In this study (n = 48), we used ERPs to examine the time course of attentional enhancement and suppression when participants were given pretrial information about target or distractor features. Consistent with our hypothesis, we found that individuals with higher levels of anxiety had lower neural measures of suppressing the template-matching distractor, instead showing enhanced processing. These findings indicate that individuals with anxiety are more likely to use a search-and-destroy mechanism of negative templates—highlighting the importance of attentional control abilities in distractor-guided search.

scholarly journals Object-based biasing for attentional control of gaze: a comparison of biologically plausible mechanisms

2009 ◽  
Vol 10 (Suppl 1) ◽  
pp. P19 ◽  
Author(s):  
Alexander J Cope ◽  
Jonathan M Chambers ◽  
Kevin N Gurney
Keyword(s):  
Attentional Control ◽  
Object Based

scholarly journals Object-based Selection of Irrelevant Features Is Not Confined to the Attended Object

2011 ◽  
Vol 23 (9) ◽  
pp. 2231-2239 ◽  
Author(s):  
Carsten N. Boehler ◽  
Mircea A. Schoenfeld ◽  
Hans-Jochen Heinze ◽  
Jens-Max Hopf
Keyword(s):  
Visual Search ◽  
Visual Field ◽  
Target Object ◽  
Neural Processing ◽  
Irrelevant Feature ◽  
Distractor Object ◽  
Object Based ◽  
Irrelevant Color ◽  
Task Irrelevant ◽  
Selection Of

Attention to one feature of an object can bias the processing of unattended features of that object. Here we demonstrate with ERPs in visual search that this object-based bias for an irrelevant feature also appears in an unattended object when it shares that feature with the target object. Specifically, we show that the ERP response elicited by a distractor object in one visual field is modulated as a function of whether a task-irrelevant color of that distractor is also present in the target object that is presented in the opposite visual field. Importantly, we find this modulation to arise with a delay of approximately 80 msec relative to the N2pc—a component of the ERP response that reflects the focusing of attention onto the target. In a second experiment, we demonstrate that this modulation reflects enhanced neural processing in the unattended object. These observations together facilitate the surprising conclusion that the object-based selection of irrelevant features is spatially global even after attention has selected the target object.

A model of active visual search with object-based attention guiding scan paths

2004 ◽  
Vol 17 (5-6) ◽  
pp. 873-897 ◽  
Author(s):  
Linda J. Lanyon ◽  
Susan L. Denham
Keyword(s):  
Visual Search ◽  
Object Based ◽  
Scan Paths
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