Task Switching Between Target Templates During Visual Search in Healthy Adults

Study Overview
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Brief Summary
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In this line of research, the researchers having participants engage in task switching between tasks which require a positive (target) template, negative (distractor) template, or neutral (non-informative) template to the cognitive control factors associated with each template type during visual search. This is a basic science study.

Detailed Description
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The researchers will have participants engage in task switching between tasks which require a positive (target) template, negative (distractor) template, or neutral (non-informative) template to the cognitive control factors associated with each template type during visual search. Looking for impacts of task switching helps to identify the components of the cognitive control system that overlap between different types of attentional templates. This is a basic science study.

Official Title
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Task Switching Between Positive and Negative Target Templates During Visual Search in Healthy Adults

Conditions
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Healthy

Intervention / Treatment
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* Behavioral: Experimental: Within-Subjects Attentional Information


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: normal or corrected to normal visual acuity, normal color vision Exclusion Criteria: -

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Interventional Model Description: All participants receive each level of visual information (target or distractor)
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Within-Subjects Attentional Information<br>Within-Subjects, all participants receive all interventions | Behavioral: Experimental: Within-Subjects Attentional Information<br>* Behavioral: Visual Search Information Type (target or distractor information) Participants will have information about targets, distractors, or neither in different trials of the intervention.<br>* Other names: Within-Subjects, all participants receive all interventions;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Button Press Reaction Time | Speed to respond correctly to the target- after participant finds the target shape on a computer screen, they press a button to indicate what shape they see | One day (during testing) | 
| Button Press Accuracy | Accuracy of responses to target item (% correct)- the researchers will measure whether the participants presses the correct button which corresponds to the target shape presented on the computer screen or the incorrect button | One day (during testing) | 
| Eye Movements to Objects on Computer Screen | Proportion (% of total) of eye movements directed to potential targets or distractors, measured with an Eye Link II eye tracker | One day (during testing) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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attention, visual search