The Effect of Polyphonic Lullaby and Pish Pish Sound on Sleep Transition and Sleep Duration in Newborns

Sleep is the cornerstone of early development. Adequate sleep in children is important for proper growth, development and the child's health. Sleep is a dynamic process that develops and matures rapidly, especially in the first few years of life, from infancy to early adolescence. Daily sleep duration decreases with age, starting from the newborn period. At birth, babies show a sleep process that is compatible with their mothers' circadian rhythm. Newborns usually wake up in line with their nutritional needs and have short transitional sleep periods. At approximately 10-12 weeks of age, the first signs of circadian rhythm begin to develop and become apparent with increased sleep during the night. It has been reported that music positively affects mother-infant bonding, reduces babies' stress and creates positive physiological and behavioral changes. In a study examining mothers' views and practices on singing lullabies, it was seen that 87.6% of mothers said that singing lullabies soothes their children and prepares them for sleep, 88.3% prefer to sing lullabies before going to sleep while preparing their children for sleep, and 66.2% sing lullabies. Therefore, it is thought that the research will fill this gap in newborns.