SSVEP and Distractor Processing During Visual Search

Healthy Clinical Trial

Official title:

SSVEP and Distractor Processing During Visual Search in Healthy Adults

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT05633238
• Other study ID #: 3R15EY030247-01A1
• Status: Enrolling by invitation
• Phase: N/A
• Start date: October 15, 2021
• Est. completion date: May 15, 2024

Study information

• Verified date: October 2023
• Source: Lehigh University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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).

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 50
• Est. completion date: May 15, 2024
• Est. primary completion date: April 15, 2024
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 35 Years

Eligibility

Inclusion Criteria:

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

Exclusion Criteria:

• history of neurological disorders

Related Conditions & MeSH terms

• Healthy

Intervention

Behavioral:
• Visual Search Information Type (target or distractor information)
Participants will have information about targets, distractors, or neither in different blocks of the intervention.

Locations

Country	Name	City	State
United States	Lehigh University	Bethlehem	Pennsylvania

Sponsors (1)

Lead Sponsor	Collaborator
Lehigh University

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Steady-State Visually Evoked Response (SSVEP)	Brain response to visual stimuli flashing at a pre-defined frequency	One day (during testing)
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	One day (during testing)
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	One day (during testing)