Background: fluctuation of cerebral blood flow and oxygenation in neonates who undergo intensive care is an important risk factor for risk of neurodevelopmental impairment. Near infrared spectroscopy (NIRS) allow direct measurements of cerebral tissue oxygenation. Automated Fraction of Inspired Oxygen (FiO2) adjustment can maintain arterial oxygen saturation (SpO2) within a target range and may reduce risk of fluctuation of cerebral oxygenation.