History of hearing loss or tinnitus

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

Investigating the Neurobiology of Tinnitus