SSVEP and Distractor Processing During Visual Search

Not Applicable

• Conditions: Healthy
• Interventions: Behavioral: Visual Search Information Type (target or distractor information)

• Registration Number: NCT05633238
• Lead Sponsor: Lehigh University

Brief Summary

In this line of research, the researchers are utilizing an EEG measure of repeated visual stimulation, the Steady-State Visually Evoked Potential (SSVEP) to examine processing of target and distractor information during visual search. This is a basic science study.

Detailed Description

The researchers are interested in how the brain responds to target and distractor information during visual search. The researchers will manipulate the information available to the research participants, and measure research participants brain responses to information matching target or distractor features utilizing an EEG measure of repeated visual stimulation, the Steady-State Visually Evoked Potential (SSVEP).

Study Timeline

• Study Start: 2021-10-15
• Study First Submitted: 2022-11-07
• Study First Submitted QC: 2022-11-28
• Study First Posted: 2022-12-01
• Status Verified: 2023-10
• Last Update Submitted: 2023-10-02
• Last Update Posted: 2023-10-04
• Primary Completion: 2024-04-15
• Study Completion: 2024-05-15

Recruitment & Eligibility

• Status: ENROLLING_BY_INVITATION
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

• normal or corrected to normal visual acuity, normal color vision

Exclusion Criteria

• history of neurological disorders

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Within-Subjects Attentional Information	Visual Search Information Type (target or distractor information)	Within-Subjects, all participants receive all interventions

Primary Outcome Measures

Name	Time	Method
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
Steady-State Visually Evoked Response (SSVEP)	One day (during testing)	Brain response to visual stimuli flashing at a pre-defined frequency

Trial Locations

Locations (1)

Lehigh University; 🇺🇸 Bethlehem, Pennsylvania, United States