The goal of this observational study is to learn about effects of noise in healthy patients undergoing elective surgery.

There are many factors that can negatively affect surgical performance in operating rooms. Noise is the most striking of these factors. Excessive noise can cause hearing loss, cognitive dysfunction, anxiety, stress-induced increases in cortisol levels, and an increased risk of cardiovascular disease. Noise can have negative effects on concentration and performance. At the same time, workplace noise is one of the most important causes of fatigue. One of the anesthesia phases where the sound level reaches the highest levels is the induction phase. With this study, the investigators want to examine the effects on the anesthesia team, the patient and the environment by measuring the noise levels during the induction period, and then train the operating room personnel to examine the effects on this issue. The investigators aim to raise awareness about the development of procedures and training programs for operating room personnel.

Inclusion Criteria:

• patients over the age of 18,

  • Elective cases to be taken under general anesthesia,
  • Those who do not have a psychiatric disease,
  • Patients without hearing loss

Exclusion Criteria:

• patients under the age of 18
• Patients who have psychiatric disease
• Patients who has hearing loss

Patients over the age of 18 without hearing loss who will undergo elective surgery under general anesthesia