Search for Novel Transcranial Magnetic Stimulation (TMS) Targets for Mental Illness

Inclusion Criteria: * Age 18-65 * English proficiency sufficient for informed consent, questionnaires/tasks, and treatment * Primary diagnosis of one of the following: major depressive disorder (MDD), obsessive-compulsive disorder (OCD), generalized anxiety disorder (GAD), or schizophrenia (determined by focal assessment using the Structured Clinical Interview for DSM-5) * ≥20 on the Beck Depression Inventory for patients with MDD * ≥16 on the Beck Anxiety Inventory for patients with GAD * ≥16 on the Yale-Brown Obsessive-Compulsive Scale for patients with OCD * ≥58 on the Positive and Negative Symptom Scale for patients with schizophrenia * Stable psychotropic medication regimen, or remain medication free, for 4 weeks prior to treatment (Medication changes during study enrollment period will be tracked for post hoc analysis). * Primary clinician (e.g. psychiatrist, therapist, psychologist, APRN, PA, etc.) responsible for psychiatric care before, during, and after the trial Exclusion Criteria: * Active pregnancy as determined by a urine pregnancy test * Cluster B personality disorders (antisocial personality disorder, borderline personality disorder, histrionic personality disorder, narcissistic personality disorder) * PTSD with active, clinically significant symptoms, as determined by clinician * Diagnosis of Schizoaffective Disorder, Bipolar Type * Recent (within 4 weeks) or concurrent use of rapid-acting antidepressant agent (ketamine/esketamine/ECT) * Ferromagn…