Related Experiment Video
Updated: Jul 14, 2026
Preterm EEG: A Multimodal Neurophysiological Protocol
Published on: February 18, 2012
Analysis of frontal sharp transients in 32 neonatal polysomnography in healthy fullterm newborns
Ana Chrystina Crippa1, Carlos Eduardo Silvado, Luciano de Paola
1Neurology Division, Internal Medicine Department, Hospital de Clínicas, University Federal of Paraná, Curitiba, PR, Brazil. anacrippa@uyfpr.br
Objective:
To identify and quantify frontal sharp transients found in neonatal polysomnography of healthy full term newborns in each stage of the sleep-wake cycle within the first 48 hours of life.
Method:
The EEG from healthy term 32 newborns, legal age of two days and with adequate monitoring during pregnancy. Frontal sharp transients (FST) were quantified, according to synchronous or asynchronous, in each stage of the sleep-wake cycle. The results were compared by Kruskal-Wallis-test.
Results:
FST were counted individually in each sleep phase, being present during quiet sleep (QS) in all tracings. FST bilateral and synchronous and lateralized FST were more frequent during QS (p<0.05).
Conclusion:
Lateralized FST were found mostly during quiet sleep. FST asynchronous in healthy full term newborns were normal and depended of FST density. FST unilateral appearance should not necessarily be considered abnormal as well.
