Audiovisual stimulation with synchronized pulsed tones and flickering lights set at a delta frequency can induce a sedative effect

Abstract

The perioperative period is a source of significant fear and anxiety for patients. Therefore, anxiolytic and sedative drugs are administered routinely, before and during surgery [1]. However, a larger dose of sedatives can delay the recovery in the ambulatory setting and be associated with an increased risk for complications. © the Korean Society of Anesthesiologists, 2011.