Behavioral Impact and Neural Correlates of Network-based Brain Stimulation in Schizophrenia

Inclusion Criteria: * Age between 18-65 years * At pre-visit screening (see attached phone screening questionnaire): Subjects must report that they have been given a diagnosis of schizophrenia or schizoaffective disorder by a mental health professional * Current smoker (expired air CO of 5ppm or higher) * Must be able to read, speak and understand English * Must be judged by study staff to be capable of completing the study procedures * Diagnosis of either schizophrenia or schizoaffective disorder according to DSM-V criteria and confirmed by SCID\[26\] * Participants will be in stable outpatient treatment with no recent (within the past 30 days) hospitalizations or changes in their medication regimens. Exclusion Criteria: * DSM-V intellectual disability * Substance use disorder within the past three months * Any history of a progressive or genetic neurologic disorder (e.g. Parkinson's disease, multiple sclerosis, tuberous sclerosis, Alzheimer's Disease) or acquired neurological disease (e.g. stroke, traumatic brain injury, tumor), including intracranial lesions * History of head trauma resulting in any loss of consciousness (\>15 minutes) or neurological sequelae * Current history of poorly controlled headaches including chronic medication for migraine prevention * History of fainting spells of unknown or undetermined etiology that might constitute seizures * History of seizures, diagnosis of epilepsy, or immediate (1st degree relative) family history epilepsy with the exc…