Intraoperative Blood Pressure and Cognitive Performance

You may be eligible if

• English as first language, or as a learned language as long as the patient is proficient
• No history of any neurological disease with the exception of patients without functional impairment who suffered a single episode of transient ischemic attack
• No history of axis I psychiatric diagnosis or drug abuse
• 40 years old or older
• Undergoing laminectomy under general anesthesia
• Must not take antihypertensive medication for purposes other than treatment of hypertension