Brainwave Entrainment During Emergence

The investigators will compare whether there is a significant difference in the time required for general anesthesia recovery according to application of the binaural sound after surgery.

Inclusion Criteria:Patients between 19 and 50 years of age who are scheduled to undergo laparoscopic salpingo-oophorectomy/ ovarian cystectomyIntellectual level to understand the procedures of the clinical trialPhysical status classification of the American Society of Anesthesiology (ASA) 1-2 gradesExclusion Criteria:Patients with hearing loss or using hearing aidsPatients who have been given narcotic painkillers or sedative drugs within a week.Alcohol-dependent or drug-dependent patientsPatients with drug hypersensitivity to anestheticsPatients with arrhythmia, cardiovascular disease, impaired heart function, decreased circulatory blood flowPatients with liver failurePatients with other major medical or psychological disorder that will affect the treatment responsePatients with claustrophobia or anxiety disorderPatients with organic brain disorders or other conditions that cannot be properly measured by PSIPatients who have been newly diagnosed with myocardial infarction, cerebral ischemic seizure, stroke, clinically significant coronary artery disease, or have undergone percutaneous carotid coronary dilatation or coronary bypass treatment within 6 monthsPatients with a history of epilepsy or seizuresPatients with acute angle glaucomaPatients who deemed unsuitable for this clinical trial