SSVEP and Distractor Processing During Visual Search

SSVEP and Distractor Processing During Visual Search in Healthy Adults

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05633238

Enrollment

Registered

2022-12-01

Start date

2021-10-15

Completion date

2025-05-15

Last updated

2024-09-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

attention, visual search

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).

Interventions

BEHAVIORALVisual Search Information Type (target or distractor information)

Participants will have information about targets, distractors, or neither in different blocks of the intervention.

Study design

Allocation

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 35 Years

Healthy volunteers

Yes

Inclusion criteria

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

Exclusion criteria

* history of neurological disorders

Design outcomes

Primary

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

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026