TMS Related Biomarker Assessments

Eligibility Criteria

• * Male and Female between ages 18-65
• * Ability to give written informed consent (age 18 or above)
• * Diagnosed with schizophrenia-spectrum disorder and Evaluation to Sign Consent (ESC) above10.
• * Any history of seizures.
• * Significant alcohol or other drug use (substance dependence within 6 months or substance abuse within 1 month) other than nicotine or marijuana dependence.
• * Any major medical illnesses that may affect normal brain functioning. Examples of these conditions include, but not limited to, stroke, CNS infection or tumor, other significant brain neurological conditions.
• * Taking \> 400 mg clozapine/day
• * Failed TMS screening questionnaire
• * Cardiac pacemakers, implanted medication pumps, intracardiac lines, or acute, unstable cardiac disease, with intracranial implants (e.g. aneurysm clips, shunts, stimulators, cochlear implants, or electrodes) or any other metal object within or near the head, excluding the mouth, that cannot be safely removed.
• * History of head injury with loss of consciousness over 10 minutes; history of brain surgery
• * Can not refrain from using alcohol and/or marijuana 24 hours or more \& cigarette smoking half and hour or more prior to experiments.
• * Woman who is pregnant (child-bearing potential but not on contraceptive and missing menstrual period; or by self report; or by positive pregnancy test) or has had unprotected sexual intercourse without birth control in the last 4 weeks.