Visual Search: Detection, Identification, and Localization

Perception ◽  
1992 ◽  
Vol 21 (6) ◽  
pp. 765-777 ◽  
Author(s):  
Marc Green
Keyword(s):  
Visual Search ◽  
Target Detection ◽  
Detection And Identification ◽  
Display Performance ◽  
The Right ◽  
Detection And Localization

In two studies, observers searched for a single oblique target in a field of vertical distractors. In one experiment, target detection and identification (left versus right tilt) were compared. In another experiment, detection and localization were compared for the left versus the right half of the display. Performance on all three tasks was virtually identical: if a target could be detected, it could also be identified and localized. A review of previous studies generally supports the conclusion that performance on the three tasks is similar. This argues against current search theories, which rest heavily on data showing differences in identification and localization.

scholarly journals Target detection and localization in visual search: A dual systems perspective

2003 ◽  
Vol 65 (5) ◽  
pp. 678-694 ◽  
Author(s):  
Liu Geniva ◽  
Christopher G. Healey ◽  
James T. Enns
Keyword(s):  
Visual Search ◽  
Target Detection ◽  
Dual Systems ◽  
Systems Perspective ◽  
Detection And Localization

scholarly journals Decreased event-related theta power and phase-synchrony in young binge drinkers during target detection: An anatomically-constrained MEG approach

2018 ◽  
Vol 33 (3) ◽  
pp. 335-346 ◽  
Author(s):  
A Correas ◽  
E López-Caneda ◽  
L Beaton ◽  
S Rodríguez Holguín ◽  
LM García-Moreno ◽  
...  
Keyword(s):  
Alcohol Consumption ◽  
Frontal Cortex ◽  
Binge Drinking ◽  
Target Detection ◽  
Attentional Control ◽  
Theta Power ◽  
Inferior Frontal Cortex ◽  
Binge Drinkers ◽  
The Right ◽  
Integrative Processing

Background: The prevalence of binge drinking has risen in recent years. It is associated with a range of neurocognitive deficits among adolescents and young emerging adults who are especially vulnerable to alcohol use. Attention is an essential dimension of executive functioning and attentional disturbances may be associated with hazardous drinking. The aim of the study was to examine the oscillatory neural dynamics of attentional control during visual target detection in emerging young adults as a function of binge drinking. Method: In total, 51 first-year university students (18 ± 0.6 years) were assigned to light drinking ( n = 26), and binge drinking ( n = 25) groups based on their alcohol consumption patterns. A high-density magnetoencephalography signal was combined with structural magnetic resonance imaging in an anatomically constrained magnetoencephalography model to estimate event-related source power in a theta (4–7 Hz) frequency band. Phase-locked co-oscillations were further estimated between the principally activated regions during task performance. Results: Overall, the greatest event-related theta power was elicited by targets in the right inferior frontal cortex and it correlated with performance accuracy and selective attention scores. Binge drinkers exhibited lower theta power and dysregulated oscillatory synchrony to targets in the right inferior frontal cortex, which correlated with higher levels of alcohol consumption. Conclusions: These results confirm that a highly interactive network in the right inferior frontal cortex subserves attentional control, revealing the importance of theta oscillations and neural synchrony for attentional capture and contextual maintenance. Attenuation of theta power and synchronous interactions in binge drinkers may indicate early stages of suboptimal integrative processing in young, highly functioning binge drinkers.

scholarly journals Avoiding potential pitfalls in visual search and eye-movement experiments: A tutorial review

2021 ◽  
Author(s):  
Hayward J. Godwin ◽  
Michael C. Hout ◽  
Katrín J. Alexdóttir ◽  
Stephen C. Walenchok ◽  
Anthony S. Barnhart
Keyword(s):  
Visual Search ◽  
Data Collection ◽  
Eye Movement ◽  
Movement Behavior ◽  
Popular Approach ◽  
Research Cycle ◽  
Dependent Variables ◽  
Potential Problems ◽  
The Moment ◽  
The Right

AbstractExamining eye-movement behavior during visual search is an increasingly popular approach for gaining insights into the moment-to-moment processing that takes place when we look for targets in our environment. In this tutorial review, we describe a set of pitfalls and considerations that are important for researchers – both experienced and new to the field – when engaging in eye-movement and visual search experiments. We walk the reader through the research cycle of a visual search and eye-movement experiment, from choosing the right predictions, through to data collection, reporting of methodology, analytic approaches, the different dependent variables to analyze, and drawing conclusions from patterns of results. Overall, our hope is that this review can serve as a guide, a talking point, a reflection on the practices and potential problems with the current literature on this topic, and ultimately a first step towards standardizing research practices in the field.

scholarly journals Neural correlates of central versus peripheral target detection during complex visual search

2011 ◽  
Vol 11 (11) ◽  
pp. 1294-1294
Author(s):  
S. Utz ◽  
G. W. Humphreys ◽  
J. P. McCleery
Keyword(s):  
Visual Search ◽  
Target Detection ◽  
Neural Correlates ◽  
Peripheral Target
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