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Exploring the Relationship Between Brain Asymmetry and Attention

NCT03789201 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 45

Last updated 2022-10-26

No results posted yet for this study

Summary

Background:

People tend to pay more attention to one side of space than the other and this may be due to differences in the structure and function of the two sides of the brain. We are interested in whether we can detect those difference with magnetic resonance imaging (MRI), transcranial magnetic stimulation (TMS), and electroencephalography (EEG).

Objective:

The purpose of the study is to understand how differences in brain structure may cause people to pay more attention to one side than the other.

Eligibility:

Healthy adults ages 18-35

Design:

Participants will be screened with a neurological exam.

Participants will have 2-3 visits for a total duration of about 7/8 hours.

Women of childbearing age must have a negative pregnancy test before each MRI scan.

Visits may include:

Physical exam

Tests of attention, and thinking

TMS. A brief electrical current will pass through a wire coil on the scalp. Participants will hear a click and may feel a pull. They may be asked to tense muscles or do tasks.

Magnetic resonance imaging (MRI) scan for a maximum of 1 hour. Participants will lie on a table that slides into a cylinder in a strong magnetic field. They will do tasks on a computer screen or lie still. They will get earplugs for loud noise.

EEG for no longer than 5 hours, with most lasting 3 hours. Gel and a cap with electrodes will be placed on the scalp. They will record brain waves while the participant gets TMS or does nothing.

Questions about participants dominant hand and about the MRI.

Conditions

  • Normal Physiology

Interventions

DEVICE

TMS EEG

attempt to use TMS EEG to measure connectivity between cortical areas

DEVICE

TMS fMRI

compare measurements to established functional connectivity measures; e.g., EEG coherence and fMRI

Sponsors & Collaborators

  • National Institute of Neurological Disorders and Stroke (NINDS)

    lead NIH

Principal Investigators

  • Eric M Wassermann, M.D. · National Institute of Neurological Disorders and Stroke (NINDS)

Study Design

Allocation
NA
Purpose
OTHER
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
35 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-02-28
Primary Completion
2022-10-24
Completion
2022-10-24

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03789201 on ClinicalTrials.gov