Autonomic data collection will be performed between 9 a.m. and 12 p.m. and with the subjects will stay in a horizontal supine position on a medical bed. Room temperature (21°C), lighting (3200 K; 500 lx according to Uni En 12464), and relative humidity (50%) will be controlled. External and internal noise sources will be excluded. Before recording sessions, patients will be encouraged to urinate and then will be requested to lie on the medical bed for clinical examination with their eyes open for at least 10 minutes to adapt to the room temperature and humidity and also to reduce their anxiety. During this time, the autonomic sensors will be applied and connected to the polygraph. After connection, subjects will be asked to close their eyes and to maintain their position until the end of the recording session. During the entire recording session, data collection will be obtained from each subject using an 8-channel digital polygraph (Procomp Infinity,Thought Technology Ltd, Montreal, Canada).