Clinical Research Directory

Inclusion Criteria: * Active Duty Military Pilots (Instructor Pilot Trainees or Remote Piloted Aircraft Trainees) * Age 18-54 years * Biological male or female Exclusion Criteria: * Age \< 18 years * Age \> 60 years * Non-active-duty members * History of recurrent migraine headaches requiring chronic suppressive medication or prescription drug intervention more frequently than once per year. * History of head trauma or traumatic brain injury with any loss of consciousness or with confusion or amnesia of greater than five minutes. * History of eye trauma related to a metallic object unless the presence of residual metal has been previously excluded by x-ray. * Pregnancy * History of significant neurological disease including cerebrovascular disease, demyelinating disease, or infections of the central nervous system (encephalitis, meningitis). * History of medical conditions with potential neurological involvement such as obstructive sleep apnea, autoimmune disorders, etc. * History of seizures since age six. * Claustrophobia or intolerance of the MRI without medication. * Any medical contraindication to MRI (ex: foreign bodies, non-MRI compatible pacemaker, metal devices).