Healthy
Conditions
Keywords
attention, visual search
Brief summary
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
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.
Interventions
Visual Search Information Type (target or distractor information) Participants will have information about targets, distractors, or neither in different trials of the intervention.
Sponsors
Lehigh University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Intervention model description
All participants receive each level of visual information (target or distractor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* normal or corrected to normal visual acuity, normal color vision
Exclusion criteria
\-
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Button Press Reaction Time | One day (during testing) | 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 |
| Button Press Accuracy | One day (during testing) | 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 |
Countries
United States
Participant flow
Recruitment details
Lehigh University, normal or corrected to normal visual acuity and normal color vision
Participants by arm
| Arm | Count |
|---|---|
| Within-Subjects Attentional Information Within-Subjects, all participants receive all interventions
Experimental: Within-Subjects Attentional Information: Visual Search Information Type (target or distractor information) Participants will have information about targets, distractors, or neither in different trials of the intervention. | 27 |
| Total | 27 |
Withdrawals & dropouts
| Period | Reason | FG000 |
|---|---|---|
| Overall Study | fire alarm during testing session, incomplete testing | 1 |
Baseline characteristics
| Characteristic | Within-Subjects Attentional Information | — |
|---|---|---|
| Age, Categorical <=18 years | 0 Participants | — |
| Age, Categorical >=65 years | 0 Participants | — |
| Age, Categorical Between 18 and 65 years | 27 Participants | — |
| Age, Continuous | 19.07 years STANDARD_DEVIATION 1.11 | — |
| Race and Ethnicity Not Collected | — | — Participants |
| Region of Enrollment United States | 27 participants | — |
| Sex: Female, Male Female | 15 Participants | — |
| Sex: Female, Male Male | 12 Participants | — |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | 0 / 27 |
| other Total, other adverse events | 0 / 27 |
| serious Total, serious adverse events | 0 / 27 |
Outcome results
Primary
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
Time frame: One day (during testing)
Population: Two participants were removed due to low accuracy (2 standard deviations below the mean) in one or more conditions.
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| Within-Subjects Attentional Information | Button Press Accuracy | Positive cue: repeat cue meaning, repeat cue color | .912 proportion correct | Standard Error 0.008 |
| Within-Subjects Attentional Information | Button Press Accuracy | Positive cue: repeat cue meaning, change cue color | .926 proportion correct | Standard Error 0.017 |
| Within-Subjects Attentional Information | Button Press Accuracy | Positive cue: Change Meaning, repeat color | .875 proportion correct | Standard Error 0.014 |
| Within-Subjects Attentional Information | Button Press Accuracy | Positive cue: cue meaning change, cue color change | .852 proportion correct | Standard Error 0.014 |
| Within-Subjects Attentional Information | Button Press Accuracy | Negative cue: repeat cue meaning, repeat cue color | .843 proportion correct | Standard Error 0.017 |
| Within-Subjects Attentional Information | Button Press Accuracy | Negative cue: repeat cue meaning, change cue color | .819 proportion correct | Standard Error 0.022 |
| Within-Subjects Attentional Information | Button Press Accuracy | Negative cue: Change Meaning, repeat color | .873 proportion correct | Standard Error 0.016 |
| Within-Subjects Attentional Information | Button Press Accuracy | Negative cue: cue meaning change, cue color change | .835 proportion correct | Standard Error 0.016 |
p-value: <0.05ANOVA
Primary
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
Time frame: One day (during testing)
Population: Two participants were removed due to low accuracy (2 standard deviations below the mean) in one or more conditions.
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| Within-Subjects Attentional Information | Button Press Reaction Time | Positive cue: repeat cue meaning, repeat cue color | 1.68 Seconds | Standard Deviation 0.03 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Positive cue: repeat cue meaning, change cue color | 1.69 Seconds | Standard Deviation 0.03 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Positive cue: Change Meaning, repeat color | 1.76 Seconds | Standard Deviation 0.04 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Positive cue: cue meaning change, cue color change | 1.77 Seconds | Standard Deviation 0.04 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Negative cue: repeat cue meaning, repeat cue color | 1.93 Seconds | Standard Deviation 0.03 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Negative cue: repeat cue meaning, change cue color | 1.97 Seconds | Standard Deviation 0.03 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Negative cue: Change Meaning, repeat color | 1.78 Seconds | Standard Deviation 0.03 |
| Within-Subjects Attentional Information | Button Press Reaction Time | Negative cue: cue meaning change, cue color change | 1.88 Seconds | Standard Deviation 0.03 |
p-value: <0.05ANOVA