Exploring Neurophysiological Markers of Brain Health

Inclusion Criteria: * Must be an active brain imaging participant in The BrainHealth Project (NCT04869111) * Minimum age of 22 * Fluent in English * Able to read \& hear information over a computer * Must pass an MRI safety screener to assess the presence of contraindicators for MRI compatibility (i.e., non-removable metal within/on the body, claustrophobia, pregnancy, non-correctable vision problems, head trauma, and CNS disease)or other standard requirements as determined by the Imaging Center. * Must pass a modified TMS Adult Safety Screen * Meet all criteria for study as determined by the study physician Exclusion Criteria: * A diagnosis of a neurodegenerative disease * A history of stroke, concussion, or brain injury that currently hinders them from functioning at their prior level * A diagnosis of autism spectrum disorder that currently hinders them from functioning independently. * Metallic brain implants or fragments (like a shunt, pacemaker, clips, coils, bullet fragments, cochlear implants) * Magnetically activated implants or electronically implanted devices * Medication pumps * Personal or family history of epilepsy, seizure(s), seizure disorder. * History of, or risk factors for syncope (fainting) * Report significant cognitive challenges * Report untreated health issues (like substance abuse, hypertension, hypo- or hyper-thyroidism) * Have claustrophobia