Clinical Research Directory

Inclusion Criteria: * Does not meet exclusion criteria. Exclusion Criteria: The exclusion criteria below are regularly implemented in MRI, CT, and EEG experiments for the safety of the subjects and for data quality assurance. * Claustrophobia (scanning environment may be uncomfortable). * Contraindications to MRI: including pacemaker, aneurysm clips, neurostimulators, cochlear implants, metal in eyes, steel worker, or other implants. * Contraindications to CT: pregnancy * Active medical disorder or treatment with potential central nervous system (CNS) effects (e.g. Alzheimer's) - * History of neurologic disorder. (e.g. Parkinson's, Epilepsy, or Essential Tremor) * History of head injury resulting in loss of consciousness for \>10 minutes. * History of alcohol or drug dependence (through self-report). * History of cardiac disease * A current or prior use of any cardiac medication (e.g. beta blockers or other anti-arrhythmics) * A history of diabetes mellitus or use of diabetic medications (e.g. metformin).