Oscillatory characteristics in the brain activity of the newborns and their correlation with different gestational ages

The purpose of this study is to detect the characteristic features oscillatory electrical activity brain in early postnatal development, depending on gestational age newborns. Methods. based automatic processing clinical data from electroencephalography newborns third day after birth. Behavioral characteristics assessed periods sleep and wakefulness, without a precise division into stages various states wakefulness. multichannel signals was carried out basis method modifying continuous wavelet transform (CWT), which makes it possible estimate average number, duration energy components (patterns) developing different frequency ranges. Results. A paradoxical picture has been demonstrated describing state wakefulness weakly preterm infants. For group children, number patterns detected ranges 1 20 Hz behave reflected way during compared children born at usual time. At same time, remains unchanged. Conclusion. In first days child’s life, significant differences with slightly sleep/wake behavioral states. Quantitative estimates parameters CWT are promising for use as systems neonatal activity, additional amplitude estimates. Such may be relevant search signs anomalies development central nervous system.