- Subjects will be recruited among individuals volunteering for NIH protocol 95-M-0150 A Neurobiological Investigation of Patients with Schizophrenia Spectrum Disorders and Their Siblings (PI: Daniel Weinberger, M.D.), NIH protocol 00-M-0085 Structural and Functional Imaging of Neuropsychiatric Patients and Normal Volunteers with 3.0 Tesla MRI and Magnetoencephalography. (P.I.: Venkata Mattay, MD) or NIH protocol 89-M-0160 Inpatient Evaluation of Neuropsychiatric Patients (PI: Jose Apud, M.D. Ph.D).