Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
218 participants
OBSERVATIONAL
2016-05-25
2019-07-12
Brief Summary
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If a cortical neural network etiology for bothersome tinnitus is confirmed, it will be an astounding, powerful, paradigm shifting model for the diagnosis, prevention and, most importantly, treatment of tinnitus. Furthermore, if a battery of neurocognitive tests can identify soldiers at risk for the development of tinnitus then appropriate primary prevention strategies can be introduced.
There are three Specific Aims to this project.
Specific Aim 1. To determine if soldiers who develop tinnitus display pre-deployment differences in a set of physical, functional, cognitive, vulnerability, perpetuating factors, pre-deployment neurocognitive scores, or neuroimaging features compared to soldiers who do not develop tinnitus ("control group").
Specific Aim 2. To determine if particular scores on neurocognitive tests or neuroimaging features of functional/structural connectivity networks are associated with the development of tinnitus.
Specific Aim 3. To identify a set of pre-deployment physical, functional, cognitive, vulnerability, and perpetuating factors, neurocognitive responses, and neuroimaging features that are associated with the development of tinnitus.
The investigators plan to recruit 200 soldiers, between the ages of 18 and 30 years who do not have hearing loss or tinnitus and have never been deployed to military theater. The soldier participants will undergo a variety of tests before and after deployment, which will include a hearing test, neurocognitive tests (i.e., brain function tests), and a variety of novel radiologic imaging studies of the brain. One of these novel radiologic imaging studies is functional connectivity Magnetic Resonance Imaging, a proven methodology that monitors changes in brain activity and connections based on blood flow between different brain areas and levels of consumption of oxygen. This information is used to describe the condition of important neural networks responsible for such things as attention, mood, sensation, vision, hearing, and introspection or self-contemplation.
Detailed Description
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Conditions
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Study Design
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CASE_CONTROL
PROSPECTIVE
Study Groups
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No Tinnitus
The absence of tinnitus will be based on the participants' responses to questions 8a, 9c, and 9d of the Post-Deployment Health Assessment (PDHA).
No interventions assigned to this group
Tinnitus
The presence of tinnitus will be based on the participants' responses to questions 8a, 9c, and 9d of the Post-Deployment Health Assessment (PDHA).
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* Men and women between the ages of 18 and 30 years
* Scheduled for first deployment to military theater
* Must be able to read, write, and understand English
* Willing to sign Request Pertaining to Military Records (Form 180) to allow study personnel to access medical records for the purposes of this study.
Exclusion Criteria
* Currently taking medication for depression, anxiety, or other DSM IV Axis 1 disorder
* History of head trauma sufficient to cause loss of consciousness for 30 minutes or greater
* History of surgery to the brain
* History of claustrophobia
* Presence of metallic implants in the head and upper cervical region that are non-MRI compatible and would prohibit use of MRI.
* At any time in the past, prior deployment or employment in military theater
* Currently pregnant
18 Years
30 Years
ALL
Yes
Sponsors
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United States Department of Defense
FED
Washington University School of Medicine
OTHER
Responsible Party
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Principal Investigators
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Jay F. Piccirillo, MD
Role: PRINCIPAL_INVESTIGATOR
Washington University School of Medicine
Sean Wise, CAPT., M.D.
Role: PRINCIPAL_INVESTIGATOR
United States Naval Medical Center, San Diego
Locations
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Naval Medical Center
San Diego, California, United States
Countries
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Other Identifiers
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CDMRP
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
NMCSD.2013.0021
Identifier Type: -
Identifier Source: org_study_id